Vacuum Free Cryostat

Vacuum Free Cryostat for Spectroscopy from Japan

Vacuum free cryostat for liquid samples

Vacuum free cryostat for liquid samples

About Unisoku/TII Group

As a member of Tokyo Instruments, Inc. (TII Group), UNISOKU develops, manufactures and custom-makes the world’s cutting edge research instruments since 1974. It was chosen as one of Japan’s “Global Niche Top 100 Companies” by the Japanese Ministry of Economy, Trade and Industry in March, 2014. It is striving to be the leading company in Japan as “No.1 in Nano-Technology measurement and Photonics”.

Vacuum Free Cryostats for UV-VIS, Fluorescence and Circular Dichroism: USP-203 Series

USP-203 Series of products are stand-alone cryostats. Their light weight and compact footprint allows them to be placed inside most commercial UV-VIS, Fluorescence and CD Spectrometers with proper adaptation. This allows temperature controlled measurements of absorption, fluorescence, or circular dichroism spectra.

The USP-203 Series of products have been used to measure liquid, solid or powder samples.

  • UV-VIS-NIR absorption spectra
  • Transient Absorption spectra and decays
  • Circular Dichroism spectra
  • Photoluminescence/ Fluorescence/ Phosphorescence spectra in UV- VIS- NIR
  • Photoluminescence decays

Outstanding Features

  • Vacuum Free–the cryostat does not require vacuum pumps to operate! No Waiting in the noise of the vacuum pump before starting your experiments.
  • Liquid Sample–no worries! It uses Standard Quartz 10cm x 10cm cuvette!
  • Kinetic Study–great! Reagents can be injected and mixed by the magnetic stirrer, makes it easy for kinetic measurements!
  • Small Volume of samples: adaptor available to accommodate 1mm optical path cuvette!
  • Both Cooling (-80 °C standard, -180 °C conditional) and Heating (+100 °C).
  • Light weight and compact footprint.

Liquid Nitrogen ContainerStainless steel dewar, 2L
Low-Temperature Sample ChamberAluminum, polyurethane foam for thermal insulation
Optical WindowsQuartz, 3-way (absorption and fluorescence)
Suitable CuvetteOuter dimension of 12.5 mm × 12.5 mm
For 1 mm and 2 mm optical path cuvettes use with adapter
Temperature ControlRegulated liquid N2 flow controlled by automatic valve
Temperature Range-80°C ~ +100°C (-180°C conditional, below -80°C dry gas purge is recommended)
Temperature Accuracy±1°C or ±0.5% of set temperature, whichever is larger. (error of sensor not included)
Quantity of Dew CondensationLess than 0.1 OD/hour at -80°C with Unisoku Spectrophotometer
Temperature SensorResistance thermometer sensor (Pt-100 Class B)
FunctionsTwo built-in heaters: one to prevent dew condensation on optical windows, another
for temperature control
Cryogen UsedLiquid nitrogen
Liquid N2
Consumption Rate
1L/ Hour
System ElectronicsAC 100-120V, 1A 50/60 Hz
External Size146.5 (H) × 90 (W) × 111 (D) mm

Specifications are subject to change without notification

  • Thermodynamics of chemical reactions
  • Luminescence quantum yields in low temperature glasses
  • CD spectra of chiral molecules
  • Phosphorescence
  • Protein stability
  • Nucleic acid melting
  • Temperature effect on MLCT excited state relaxation pathways
  • Temperature effect on inclusion complexes of cyclodextrins with organic compounds
  • Coordination chemistry at TiO2 surface
  • Photophysical behavior of MLCT photosensitizers
  • Thermal degradation and structural transitions of coordination polymers
  • Phase transition of water trapped in reversed micelles
  • Temperature effect on transient absorption of MLCT complexes
  • Mechanism of biological nitrogen binding and reduction
  • Metal-catalyzed redox reactions
  • Photolysis at low temperature
  • Self-assembly of nucleotides under super-cooled conditions
  • Chemical oxidation
  • S. M. Jones, et al., (2020) Rapid Decay of the Native Intermediate in the Metallooxidase Fet3p Enables Controlled FeII Oxidation for Efficient Metabolism, J. Am. Chem. Soc. 142, 10087
  • S. Banerjee, et al., (2020) Sc3+-promoted O–O bond cleavage of a (μ-1,2-peroxo)diiron(III) species formed from an iron(II) precursor and O2 to generate a complex with an FeIV2(μ-O)2 core, J. Am. Chem. Soc. 142, 4285
  • H. Kim et al., (2020) Heme-FeIII Superoxide, Peroxide and Hydroperoxide Thermodynamic Relationships: FeIII-O2•– Complex H-Atom Abstraction Reactivity,  J. Am. Chem. Soc. 142, 3104
  • T. Devi, et al., (2020) Calcium Ion and Other Redox-Inactive Metal Ions Enable to Modulate Electron-Transfer Reactivity of a Chromium(III)-Superoxo Complex, J. Am. Chem. Soc. 142, 365
  • P. Mondal and G. B. Wijeratne, (2020), Modeling Tryptophan/Indoleamine 2,3-Dioxygenase with Heme Superoxide Mimics: Is Ferryl the Key Intermediate?,  J. Am. Che142, 1846 m. Soc.
  • H. Chen, et al., (2020) Solvatochromism Study of DCM Encapsulated in ZIF-90 and the Potential Application of DCM/ZIF-90 as the Fluorescence Down-Conversion Layer for an LED Chip, J. Phys. Chem. C 124, 8854
  • M. Solakidou, et al., (2020) Double-ligand Fe, Ru catalysts: A novel route for enhanced H2 production from Formic Acid, Int. J. Hydrogen Energ. DOI: 10.1016/j.ijhydene.2020.04.215
  • Berkefeld, et al., (2020) C–P vs C–H Bond Cleavage of Triphenylphosphine at Platinum(0): Mechanism of Formation, Reactivity, Redox Chemistry, and NMR Chemical Shift Calculations of a μ-Phosphanido Diplatinum(II) Platform, Organometallics 39, 443
  • R. Honick, et al., (2020) Core Structure Dependence of Cycloreversion Dynamics in Diarylethene Analogs,  Phys. Chem. Chem. Phys. 22, 3314
  • H. Sotome, et al., (2020) A dominant factor of the cycloreversion reactivity of diarylethene derivatives as revealed by femtosecond time-resolved absorption spectroscopy, J. Chem. Phys. 152, 034301
  • E. Bletsa, et al., (2020) Natural Mn-todorokite as an efficient and green azo dye–degradation catalyst, Environ. Sci. Pollut. R. 27, 9835
  • K. Kinashi, et al., (2020) Theoretical Limit of the Color‐Change Sensitivity of a Composite Resin Dosimeter Film Based on Spiropyran/BaFCl : Eu2+/Polystyrene, ChemistryOpen 9, 623
  • S. Maria, et al., (2020) Reduction of Nitrite to NO at a Mononuclear Copper(II)-Phenolate Site,  Inorganica Chim. Acta 506, 119515
  • K. Ray, et al., (2020) Synthesis, characterisation and reactivity of a series of homo‐ and hetero‐dinuclear complexes based on an asymmetric FloH ligand system, Z. Anorg. Allg. Chem. DOI: 10.1002/zaac.202000221
  • P. Mondal and G. B. Wijeratne, (2020) Modeling Tryptophan/Indoleamine 2,3-Dioxygenase with Heme Superoxide Mimics: Is Ferryl the Key Intermediate?, J. Am. Chem. Soc. 142, 1846
  • T. Devi, et al., (2020) Calcium Ion and Other Redox-Inactive Metal Ions Enable to Modulate Electron-Transfer Reactivity of a Chromium(III)-Superoxo Complex, J. Am. Chem. Soc. 142, 365
  • J. B. Gordon, et al., (2019) Activation of Dioxygen by a Mononuclear Nonheme Iron Complex: Sequential Peroxo, Oxo, and Hydroxo Intermediates, J. Am. Chem. Soc. 141, 17533
  • M. A. Ehudin, et al., (2019) Enhanced Rates of C-H Bond Cleavage by a Hydrogen Bonded Synthetic Heme High-Valent Iron(IV) Oxo Complex, J. Am. Chem. Soc. 141, 12558
  • A. Quist, et al., (2019) Ligand Identity Induced Generation of Enhanced Oxidative HAT Reactivity for a CuII2(O2•–) Complex Driven by Formation of a CuII2(–OOH) Compound with a Strong O–H Bond,  J. Am. Chem. Soc. 141, 12682
  • S. K. Barman, et al., (2019) Regulating the Basicity of Metal–Oxido Complexes with a Single Hydrogen Bond and Its Effect on C–H Bond Cleavage, J. Am. Chem. Soc. 141, 11142
  • M. A. Ehudin, et al., (2019) Formation and Reactivity of New Isoporphyrins: Implications for Understanding the Tyr-His Cross-Link Cofactor Biogenesis in Cytochrome c Oxidase, J. Am. Chem. Soc. 141, 10632
  • M. L. Pegis, et al., (2019) Mechanism of Catalytic O2 Reduction by Iron Tetraphenylporphyrin, J. Am. Chem. Soc. 141, 8315
  • M. Confer, et al., (2019) A Mononuclear, Nonheme FeII–Piloty’s Acid (PhSO2NHOH) Adduct: An Intermediate in the Production of {FeNO}7/8 Complexes from Piloty’s Acid,  J. Am. Chem. Soc. 141, 7046
  • Y. H. Hong, et al., (2019) Photodriven Oxidation of Water by Plastoquinone Analogs with a Nonheme Iron Catalyst, J. Am. Chem. Soc. 141, 6748
  • M. A. Ehudin, et al., (2019) Tuning the Geometric and Electronic Structure of Synthetic High-Valent Heme Iron(IV)-Oxo Models in the Presence of a Lewis Acid and Various Axial Ligands, J. Am. Chem. Soc. 141, 5942
  • W. Schaefer, et al., (2019) Spin Interconversion of Heme-Peroxo-Copper Complexes Facilitated by Intramolecular Hydrogen-Bonding Interactions, J. Am. Chem. Soc. 141, 4936
  • J. B. Gordon, et al., (2019) A Nonheme Thiolate-Ligated Cobalt Superoxo Complex: Synthesis and Spectroscopic Characterization, Computational Studies, and Hydrogen Atom Abstraction Reactivity,
  • J. Am. Chem. Soc. 141, 3641
  • Y. M. Lee, et al.,          (2019) Unified Mechanism of Oxygen Atom Transfer and Hydrogen Atom Transfer Reactions with a Triflic Acid-Bound Nonheme Manganese(IV)–Oxo Complex via Outer-Sphere Electron Transfer, J. Am. Chem. Soc. 141, 2614
  • Kitagawa, et al., (2019) 1,2-Diarylbenzene as fast T-type photochromic switch, J. Mater. Chem. C 7, 2865
  • A. Massie, et al., (2020) Structural Characterization of a Series of N5‐Ligated MnIV‐Oxo Species, Chem. Eur. J. 26, 900
  • H. Sasabe, et al., (2019) Room‐Temperature Phosphorescence from a Series of 3‐Pyridylcarbazole Derivatives, Chem. Eur. J. 25, 16294
  • Fan, et al., (2019) Precise Manipulation of Temperature‐Driven Chirality Switching of Molecular Universal Joints through Solvent Mixing, Chem. Eur. J. 25, 12447
  • P. Comba, et al., (2019) Characterization and Reactivity of a Tetrahedral Copper(II) Alkylperoxido Complex, Chem. Eur. J. 25, 11157
  • K. Anandbabu, et al., (2019) A Structural and Functional Model for the Tris‐Histidine Motif in Cysteine Dioxygenase, Chem. Eur. J. 25, 9540
  • Limberg, et al., (2019) The influence of alkali metal ions on the stability and reactivity of chromium(III) superoxide moieties spanned by siloxide ligands, Chem. Eur. J. 25, 5743
  • S. de Visser, et al., (2019) Interplay Between Steric and Electronic Effects: A Joint Spectroscopy and Computational Study of Nonheme Iron(IV)‐oxo Complexes, Chem. Eur. J. 25, 5086
  • A. Fischer, et al., (2019) Spectroscopic and Computational Comparisons of Thiolate-Ligated Ferric Nonheme Complexes to Cysteine Dioxygenase: Second-Sphere Effects on Substrate (Analogue) Positioning, Inorg. Chem. 58, 16487
  •  et al., (2019) Heme–Cu Binucleating Ligand Supports  H. Kim Heme/O2 and FeII–CuI/O2 Reactivity Providing High- and Low-Spin FeIII–Peroxo–CuII Complexes, Inorg. Chem. 58, 15423
  • X. Li, et al., (2019) High-Spin Mn(V)-Oxo Intermediate in Nonheme Manganese Complex-Catalyzed Alkane Hydroxylation Reaction: Experimental and Theoretical Approach, Inorg. Chem. 58, 14842
  • B. Rice, et al., (2019) Experimental and Multireference ab Initio Investigations of Hydrogen-Atom-Transfer Reactivity of a Mononuclear MnIV-oxo Complex, Inorg. Chem. 58, 13902
  • S. Hoof and C. Limberg, (2019) The Behavior of Trispyrazolylborato-Metal(II)-Flavonolate Complexes as Functional Models for Bacterial Quercetinase—Assessment of the Metal Impact,  Inorg. Chem. 58, 12843
  • Y. H. Lin, et al., (2019) Mononuclear Manganese(III) Superoxo Complexes: Synthesis, Characterization, and Reactivity, Inorg. Chem. 58, 9756
  • Wegeberg, et al., (2019) cis Donor Influence on O–O Bond Lability in Iron(III) Hydroperoxo Complexes: Oxidation Catalysis and Ligand Transformation, Inrog. Chem. 58, 8983
  • N. B. Thompson, et al., (2019) Electronic Structures of an [Fe(NNR2)]+/0/– Redox Series: Ligand Noninnocence and Implications for Catalytic Nitrogen Fixation, Inorg. Chem. 58, 3535
  • J. Paudel, et al., (2019)           0 “Remote Charge Effects on the Oxygen-Atom-Transfer Reactivity and Their Relationship to Molybdenum Enzymes, Inorg. Chem. 58, 2054
  • T. Nakahama, et al., (2019) Tuning of Optical Properties and Thermal Cycloreversion Reactivity of Photochromic Diarylbenzene by Introducing Electron-Donating Substituents,  J. Phys. Chem. C 123, 31212
  • H. Sato, et al., (2020) Real-Time Monitoring of Low Pressure Oxygen Molecules over Wide Temperature Range: Feasibility of Ultrathin Hybrid Films of Iridium(III) Complexes and Clay Nanosheets Bull. Chem. Soc. Jpn. 93, 194
  • M. Lee, et al., (2019) A Mn(IV)-peroxo complex in the reactions with proton donors, Dalton Trans. 48, 5203
  • M. C. Denler, et al., (2019) MnIV-Oxo complex of a bis(benzimidazolyl)-containing N5 ligand reveals different reactivity trends for MnIV-oxo than FeIV-oxo species, Dalton Trans. 48, 5007
  • N. Singh, et al., (2019) Reactivity of bio-inspired Cu(II) (N2/Py2) complexes with peroxide at room temperature, J. Inorg. Biochem. 197, 110674
  • K. Inaba, et al., (2019) Thermally reversible photochromism of dipyrrolylethenes, Photochem. Photobiol. Sci. 18, 2136
  • T. Sumanovac, et al., (2019) Photoelimination of nitrogen from adamantane and pentacycloundecane (PCU) diazirines: a spectroscopic study and supramolecular control, Photochem. Photobiol. Sci. 18, 1806
  • G. Li, et al., (2019) Synthesis, enantioseparation and photophysical properties of planar-chiral pillar[5]arene derivatives bearing fluorophore fragments, Belistein J. Org. Chem. 15, 1601
  • H. Hong and L. J. Murray, (2019) Carbon Dioxide Insertion into Bridging Iron Hydrides: Kinetic and Mechanistic Studies, Eur. J. Inorg. Chem. 2019, 2146
  • K. Kanosue, et al., (2019) A colorless semi-aromatic polyimide derived from a sterically hindered bromine-substituted dianhydride exhibiting dual fluorescence and phosphorescence emission, Mater. Chem. Front. 3, 39
  • S. Debnath, N. Arulsamy, and M. P. Mehn, (2019) Synthesis and coordination chemistry of sterically hindered cobalt(II) β-ketoiminate complexes, Inorganica Chim. Acta 486, 441
  • A. Quist, M. A. Ehudin, and K. D. Karlin, (2019) Unprecedented direct cupric-superoxo conversion to a bis-μ-oxo dicopper(III) complex and resulting oxidative activity, Inorganica Chim. Acta 485, 155
  • S. S. Nag, G. Mukherjee, P. Barman, and C. V. Sastri, (2019) Influence of induced steric on the switchover reactivity of mononuclear Cu(II)-alkylperoxo complexes, Inorganica Chim. Acta 485, 80
  • H. Sugimoto, et al., (2019) Oxido-alcoholato/thiolato-molybdenum(VI) complexes with a dithiolene ligand generated by oxygen atom transfer to the molybdenum(IV) complexes, Inorganica Chim. Acta 485, 42
  • Y. Miyazaki, et al., (2019) Methane generation via intraprotein C–S bond cleavage in cytochrome b562 reconstituted with nickel didehydrocorrin, J. Organomet. Chem. 901, 120945
  • Xiao, et al., (2019) Resolution and Racemization of a Planar-Chiral A1/A2-Disubstituted Pillar[5]arene Symmetry 11, 773
  • J. M. S. Lopes, et al., (2019) Evolution of electronic and vibronic transitions in metal(II) meso-tetra(4-pyridyl)porphyrins, Spectrochim. Acta A 215, 327
  • R. Alrefai et al., (2019) Understanding Factors that Control the Structural (Dis)Assembly of Sulphur-Bridged Bimetallic Sites, Inorganics 2019, 7, 42
  • H. Ishikawa, et al., (2019) Diastereoselective Photocycloaddition Reaction of Vinyl Ether Tethered to 1,4‐Naphthoquinone, Chem. Photo. Chem. 3, 243
  • K. Kanosue, et al., (2019) A colorless semi-aromatic polyimide derived from a sterically hindered bromine-substituted dianhydride exhibiting dual fluorescence and phosphorescence emission, Mater. Chem. Front., 3, 39
  • J. Du, et al., (2018), Mechanistic Insights into the Enantioselective Epoxidation of Olefins by Bioinspired Manganese Complexes: Role of Carboxylic Acid and Nature of Active Oxidant, ACS Catal., 8, 4528.
  • S. Hong,  et al., (2018)  A mononuclear nonheme {FeNO}6 complex: synthesis and structural and spectroscopic characterization, Chem. Sci., 9, 6952.
  • et al., (2018) Catalytic Alkyl Hydroperoxide and Wegeberg Acyl Hydroperoxide Disproportionation by a Nonheme Iron Complex. ACS Catal. 8, 9980
  • T. Tominaga, T. Mochida, (2018) Multifunctional Ionic Liquids from Rhodium(I) Isocyanide Complexes: Thermochromic, Fluorescence, and Chemochromic Properties Based on Rh−Rh Interaction and Oxidative Addition, Chem. Eur. J., 24, 6239
  • Wegeberg, et al., (2018) Directing a Non‐Heme Iron(III)‐Hydroperoxide Species on a Trifurcated Reactivity Pathway, Chem. Eur. J., 24, 5134.
  • J. Serrano-Plana, et al., (2018) Acid‐Triggered O−O Bond Heterolysis of a Nonheme FeIII(OOH) Species for the Stereospecific Hydroxylation of Strong C−H Bonds, Chem. Eur. J., 24, 5331
  • T. Kurahashi, (2018) Drastic Redox Shift and Electronic Structural Changes of a Manganese(III)-Salen Oxidation Catalyst upon Reaction with Hydroxide and Cyanide Ion, Inorg. Chem., 57, 1066
  • M. Guo, et al., (2018) Mn(III)-Iodosylarene Porphyrins as an Active Oxidant in Oxidation Reactions: Synthesis, Characterization, and Reactivity Studies, Inorg. Chem., 57, 10232
  • A. Massie, et al., (2018)  Relationship between Hydrogen-Atom Transfer Driving Force and Reaction Rates for an Oxomanganese(IV) Adduct, Inorg. Chem., 57, 8253
  • S. Garakyaraghi, et al., (2018) Enhancing the Visible-Light Absorption and Excited-State Properties of Cu(I) MLCT Excited States, Inorg. Chem., 57, 2296
  • Saracini, et al., (2018)  Enhanced Electron-Transfer Reactivity of a Long-Lived Photoexcited State of a Cobalt–Oxygen Complex, Inorg. Chem., 57, 10945
  • J. Ghannam, et al., (2018) A Series of 4- and 5-Coordinate Ni(II) Complexes: Synthesis, Characterization, Spectroscopic, and DFT Studies, Inorg. Chem., 57, 8307
  • J. D. Parham, G. B. Wijeratne, D. B. Rice, and T. A. Jackson, (2018) Spectroscopic and Structural Characterization of Mn(III)-Alkylperoxo Complexes Supported by Pentadentate Amide-Containing Ligands, Inorg. Chem., 57, 2489
  • B. Rice, S. D. Jones, J. T. Douglas, and T. A. Jackson, (2018) NMR Studies of a MnIII-hydroxo Adduct Reveal an Equilibrium between  57,  MnIII-hydroxo and μ-Oxodimanganese(III,III) Species, Inorg. Chem., 7825
  • V. F. Oswald, et al., (2018) Manganese–Hydroxido Complexes Supported by a Urea/Phosphinic Amide Tripodal Ligand, Inorg. Chem., 57, 13341
  • B. Rice, et al., (2019) Structure and Reactivity of (μ-Oxo)dimanganese(III,III) and Mononuclear Hydroxomanganese(III) Adducts Supported by Derivatives of an Amide-Containing Pentadentate Ligand, Inorg. Chem. 58, 622
  • J. N. Hamann, et al., (2018) Selective Decomposition of Cyclohexyl Hydroperoxide using Homogeneous and Heterogeneous CrVI Catalysts: Optimizing the Reaction by Evaluating the Reaction Mechanism, Chem Cat Chem, 10, 2755
  • J. Kijima, et al., (2018) Structural Characterization of Myoglobin Molecules Adsorbed within Mesoporous Silicas, J. Phys. Chem. C, 122, 15567
  • M. C. Denler, et al., (2018) MnIII-Peroxo adduct supported by a new tetradentate ligand shows acid-sensitive aldehyde deformylation reactivity, Dalton Trans., 47, 13442
  • Koch and A. Berkefeld, (2018) Reactant or reagent? Oxidation of H2at electronically distinct nickel-thiolate sites [Ni2(μ-SR)2]+ and [Ni–SR]+, Dalton Trans., 47, 10561
  • Magallon, et al., (2018) Preparation of a coordinatively saturated μ-η2:η2-peroxodicopper(II) compound, Inorganica Chim. Acta, 481, 166
  • J. Pella, et al., (2018) Effects of denticity and ligand rigidity on reactivity of copper complexes with cumyl hydroperoxide, Inorganica Chim. Acta, 483, 71
  • L. Chaloner and X. Ottenwaelder, (2018) Bio-inspired oxidation chemistry of a Cu(II)-fluoride cryptate with C3-symmetry, Inorganica Chim. Acta, 481, 106
  • S. Hoof and C. Limberg, (2018) Bioinspired Trispyrazolylborato Nickel(II) Flavonolate Complexes and Their Reactivity Toward Dioxygen, ZAAC 645, 3
  • K. Kuroda, et al., (2018) A Polar Liquid Zwitterion Does Not Critically Destroy Cytochrome c at High Concentration: An Initial Comparative Study with a Polar Ionic Liquid, Australian J. Chem. 72 139
  • T. Tsai, et al., (2018) FeCo/FeCoPxOy(OH)z as Bifunctional Electrodeposited-Film Electrodes for Overall Water Splitting, ACS Appl. Energy Mater., 1, 5298
  • M. Shimizu, et al., (2018) Use of silylmethoxy groups as inducers of efficient room temperature phosphorescence from precious-metal-free organic luminophores, Mater. Chem. Front., 2, 347
  • K. Yamaguchi, et al., (2018) Multi-molecular emission of a cationic Pt(II) complex through hydrogen bonding interactions, Dalton Trans., 47, 4087
  • S. T. Li, et al., (2018) Copper(I) complexes based on ligand systems with two different binding sites: synthesis, structures and reaction with O2, Dalton Trans., 47, 544
  • Chang, et al., (2018) Nickel(III)-mediated oxidative cascades from a thiol-bearing nickel(II) precursor to the nickel(IV) product, Dalton Trans., 47, 3796
  • J. H. Kim, et al., (2018) Quantitative Interrelation between Atractylenolide I, II, and III in Atractylodes japonica Koidzumi Rhizomes, and Evaluation of Their Oxidative Transformation Using a Biomimetic Kinetic Model,ACS Omega 3, 14833
  • Zhou, A., et al., (2018) Oxoiron(IV) complexes as synthons for the assembly of heterobimetallic centers such as the Fe/Mn active site of Class Ic ribonucleotide reductases. J Biol Inorg Chem, 23, 155-165.
  • Yokota, S. et al., (2018) Critical Factors in Determining the Heterolytic versus Homolytic Bond Cleavage of Terminal Oxidants by Iron(III) Porphyrin Complexes. J Am Chem Soc, 140, 5127-5137.
  • Wegeberg, C, et al., (2018) Catalytic Alkyl Hydroperoxide and Acyl Hydroperoxide Disproportionation by a Nonheme Iron Complex. ACS Catalysis, 9980-9991.
  • Wallen, C.M., et, al (2018) Coordination of Hydrogen Peroxide with Late-Transition-Metal Sulfonamido Complexes. Inorganic Chemistry, 57, 4841-4848.
  • Saracini, C. et al., (2018) Enhanced Electron-Transfer Reactivity of a Long-Lived Photoexcited State of a Cobalt-Oxygen Complex. Inorganic Chemistry, 57, 10945-10952.
  • Sankaralingam, M., et al., (2018) Redox Reactivity of a Mononuclear Manganese-Oxo Complex Binding Calcium Ion and Other Redox-Inactive Metal Ions. J Am Chem Soc, 141, 1324-1336.
  • Noda, H., et al., (2018) Excited state engineering for efficient reverse intersystem crossing. Sci Adv, 4, eaao6910.
  • Neto, N.M.B., et al., (2018) Photoinduced Self-Assembled Nanostructures and Permanent Polaron Formation in Regioregular Poly(3-hexylthiophene). Adv Mater, 30, e1705052.
  • Mongin, C., et al., (2018) Thermally activated delayed photoluminescence from pyrenyl-functionalized CdSe quantum dots. Nat Chem, 10, 225-230.
  • Mews, N.M., et al., (2018) Tuning of Thiyl/Thiolate Complex Near-Infrared Chromophores of Platinum through Geometrical Constraints. Inorganic Chemistry, 57, 9670-9682.
  • Masuda, T., et al., (2018) Effect of Cavity Size of Mesoporous Silica on Short DNA Duplex Stability. Langmuir, 34, 5545-5550.
  • Li, F., Talipov, et al., (2018) Acid-facilitated product release from a Mo(IV) center: relevance to oxygen atom transfer reactivity of molybdenum oxotransferases. J Biol Inorg Chem, 23, 193-207.
  • Kijima, J., et al., (2018) Structural Characterization of Myoglobin Molecules Adsorbed within Mesoporous Silicas. The Journal of Physical Chemistry C, 122, 15567-15574.
  • Kal, S., et al., (2018) Sc(3+) (or HClO4) Activation of a Nonheme Fe(III)-OOH Intermediate for the Rapid Hydroxylation of Cyclohexane and Benzene. J Am Chem Soc, 140, 5798-5804.
  • Garakyaraghi, S., et al., (2018) Enhancing the Visible-Light Absorption and Excited-State Properties of Cu(I) MLCT Excited States. Inorganic Chemistry, 57, 2296-2307.
  • Fan, R., et al., (2018) Spectroscopic and DFT Characterization of a Highly Reactive Nonheme Fe(V)-Oxo Intermediate. J Am Chem Soc, 140, 3916-3928.
  • Duan, P.C., et al., (2018) Reductive O2 Binding at a Dihydride Complex Leading to Redox Interconvertible mu-1,2-Peroxo and mu-1,2-Superoxo Dinickel(II) Intermediates. J Am Chem Soc, 140, 4929-4939.
  • Wendel, D., et al., (2017) From Si(II) to Si(IV) and Back: Reversible Intramolecular Carbon-Carbon Bond Activation by an Acyclic Iminosilylene. J Am Chem Soc, 139, 8134-8137.
  • Wendel, D., et al., (2017) Twist of a Silicon-Silicon Double Bond: Selective Anti-Addition of Hydrogen to an Iminodisilene. J Am Chem Soc, 139, 9156-9159.
  • Sampaio, R.N., et al., (2017) Activation Energies for Electron Transfer from TiO2 to Oxidized Dyes: A Surface Coverage Dependence Correlated with Lateral Hole Hopping. ACS Energy Letter, 2, 2402-2407.
  • Mews, N.M., et al., (2017) Controlling Near-Infrared Chromophore Electronic Properties through Metal-Ligand Orbital Alignment. J Am Chem Soc, 139, 2808-2815.
  • Matoba, Y., et al., (2017) Activation Mechanism of the Streptomyces Tyrosinase Assisted by the Caddie Protein. Biochemistry, 56, 5593-5603.
  • Kindermann, N., et al., (2017) Hydrogen Atom Abstraction Thermodynamics of a mu-1,2-Superoxo Dicopper(II) Complex. J Am Chem Soc, 139, 9831-9834.
  • Travieso-Puente, R., et al., (2016) Spin-Crossover in a Pseudo-tetrahedral Bis(formazanate) Iron Complex. J Am Chem Soc, 138, 5503-5506.
  • Sengupta, D., et al., (2016) Exclusively Ligand-Mediated Catalytic Dehydrogenation of Alcohols. Inorganic Chemistry, 55, 9602-9610.
  • Garakyaraghi, S., et al., (2016) Cuprous Phenanthroline MLCT Chromophore Featuring Synthetically Tailored Photophysics. Inorganic Chemistry, 55, 10628-10636.
  • DiMarco, B.N., et al., (2016) A Distance Dependence to Lateral Self-Exchange across Nanocrystalline TiO2. A Comparative Study of Three Homologous RuIII/II Polypyridyl Compounds. The Journal of Physical Chemistry C, 120, 14226-14235.
  • Creutz, S.E. et al., (2016) Spin-State Tuning at Pseudo-tetrahedral d6 Ions: Spin Crossover in [BP3]FeII-X Complexes. Inorganic Chemistry, 55, 3894-3906.
  • Cao, R., et al., (2016) Peroxo and Superoxo Moieties Bound to Copper Ion: Electron-Transfer Equilibrium with a Small Reorganization Energy. J Am Chem Soc, 138, 7055-7066.
  • Cao, R., et al., (2016) A Peroxynitrite Dicopper Complex: Formation via Cu-NO and Cu-O2 Intermediates and Reactivity via O-O Cleavage Chemistry. J Am Chem Soc, 138, 16148-16158.
  • Bellows, S.M., et al., (2016) The Mechanism of N-N Double Bond Cleavage by an Iron(II) Hydride Complex. J Am Chem Soc, 138, 12112-12123.
  • Alagesan, M., et al., (2016) Enantiodifferentiating [4 + 4] photocyclodimerization of 2-anthracenecarboxylate mediated by a self-assembled iron tetrahedral coordination cage. Journal of Photochemistry and Photobiology A: Chemistry, 331, 95–101.
  • Zhang, M., et al., (2015) Visible Light Sensitized CO2 Activation by the Tetraaza [CoIIN4H(MeCN)]2+ Complex Investigated by FT-IR Spectroscopy and DFT Calculations. The Journal of Physical Chemistry C, 119, 4645-4654.
  • Yan, S., et al., (2015) Three-Dimensional Mapping of Single-Atom Magnetic Anisotropy. Nano Letters: 15, 1938-1942.
  • Jiang, X.Y, et al., (2015) Chain dimensions and intermolecular interactions of polysilanes bearing alkyl side groups over the UV thermochromic temperature. Polymer, 68, 221-226.
  • Tanushi, A., et al., (2015) Spin-Reconstructed Proton-Coupled Electron Transfer in a Ferrocene-Nickeladithiolene Hybrid. Journal of the American Chemical Society, 137, 6448-6451.
  • Tanimoto, H., et al., (2015) Synthesis of α-Substituted Enoximes with Nucleophiles via Nitrosoallenes. The Journal of Organic Chemistry.
  • Soler, M., et al., (2015) Design, Preparation, and Characterization of Zn and Cu Metallopeptides Based On Tetradentate Aminopyridine Ligands Showing Enhanced DNA Cleavage Activity. Inorganic Chemistry, 54, 10542-10558.
  • Snyder, J.A. and Bragg, A.E. (2015) Structural Control of Nonadiabatic Bond Formation: The Photochemical Formation and Stability of Substituted 4a,4b-Dihydrotriphenylenes. The Journal of Physical Chemistry A, 119, 3972-3985.
  • Shokri, A. and Que, L. (2015) Conversion of Aldehyde to Alkane by a Peroxoiron(III) Complex: A Functional Model for the Cyanobacterial Aldehyde-Deformylating Oxygenase. Journal of the American Chemical Society, 137, 7686-7691.
  • Prakash, J., et al., (2015) Spectroscopic Identification of an FeIII Center, not FeIV, in the Crystalline Sc–O–Fe Adduct Derived from [FeIV(O)(TMC)]2+. Journal of the American Chemical Society, 137, 3478-3481.
  • Neu, H.M., Jung, et al., (2015) Light-Driven, Proton-Controlled, Catalytic Aerobic C–H Oxidation Mediated by a Mn(III) Porphyrinoid Complex. Journal of the American Chemical Society, 137, 4614-4617.
  • Nakashima, T., et al., (2015) Self-Contained Photoacid Generator Triggered by Photocyclization of Triangle Terarylene Backbone. Journal of the American Chemical Society, 137, 7023-7026.
  • Mitra, M., et al., (2015)  Nonheme Fe(IV) Oxo Complexes of Two New Pentadentate Ligands and Their Hydrogen-Atom and Oxygen-Atom Transfer Reactions. Inorganic Chemistry, 54, 7152-7164.
  • Martínez-Periñán, E., et al., (2015) Highly dense nickel hydroxide nanoparticles catalyst electrodeposited from a novel Ni(II) paddle–wheel complex. Journal of Catalysis, 329, 22-31.
  • Kumar, P., et al., (2015) Reactions of Co(III)–Nitrosyl Complexes with Superoxide and Their Mechanistic Insights. Journal of the American Chemical Society, 137, 4284-4287.
  • Kishimoto, F., et al., (2015) Microwave-enhanced photocatalysis on CdS quantum dots–Evidence of acceleration of photoinduced electron transfer. Sci Rep, 5, 11308.
  • Kim, S., et al., (2015) A N3S(thioether)-Ligated CuII-Superoxo with Enhanced Reactivity. Journal of the American Chemical Society, 137, 2796-2799.
  • Kim, J., et al., (2015) Steric Effect on the Nucleophilic Reactivity of Nickel(III) Peroxo Complexes. Inorganic Chemistry, 54, 6176-6183.
  • Kim, S., Ginsbach, et al., (2015) Amine Oxidative N-Dealkylation via Cupric Hydroperoxide Cu-OOH Homolytic Cleavage Followed by Site-Specific Fenton Chemistry. Journal of the American Chemical Society, 137, 2867-2874.
  • Kakuda, S., et al., (2015) Lewis Acid-Induced Change from Four- to Two-Electron Reduction of Dioxygen Catalyzed by Copper Complexes Using Scandium Triflate. Journal of the American Chemical Society, 137, 3330-3337.
  • Jung, J., et al., (2015) Catalytic Two-Electron Reduction of Dioxygen by Ferrocene Derivatives with Manganese(V) Corroles. Inorganic Chemistry, 54, 4285-4291.
  • Hematian, S., et al., (2015) Nitrogen Oxide Atom-Transfer Redox Chemistry; Mechanism of NO(g) to Nitrite Conversion Utilizing μ-oxo Heme-FeIII–O–CuII(L) Constructs. Journal of the American Chemical Society, 137, 6602-6615.
  • England, J., et al., (2015) Oxoiron(IV) Complex of the Ethylene-Bridged Dialkylcyclam Ligand Me2EBC. Inorganic Chemistry, 54, 7828-7839.
  • Eisenhart, R.J., et al., (2015) Synthesis and redox reactivity of a phosphine-ligated dichromium paddlewheel. Inorganica Chimica Acta, 424, 336-344.
  • Ding, M., et al., (2015) Partial Nitrogen Atom Transfer: A New Synthetic Tool to Design Single-Molecule Magnets. Inorganic Chemistry, 54, 9075-9080.
  • Dhuri, S.N., et al., (2015) Interplay of Experiment and Theory in Elucidating Mechanisms of Oxidation Reactions by a Nonheme RuIVO Complex. Journal of the American Chemical Society, 137, 8623-8632.
  • Codola, Z., et al., (2015) Evidence for an oxygen evolving iron-oxo-cerium intermediate in iron-catalysed water oxidation. Nat Commun, 6, 5865.
  • Chantarojsiri, T., et al., (2015) Water-Soluble Iron(IV)-Oxo Complexes Supported by Pentapyridine Ligands: Axial Ligand Effects on Hydrogen Atom and Oxygen Atom Transfer Reactivity. Inorganic Chemistry, 54, 5879-5887.
  • Burgess, J.A., et al., (2015) Magnetic fingerprint of individual Fe4 molecular magnets under compression by a scanning tunnelling microscope. Nat Commun, 6, 8216.
  • Biswas, A.N., et al., (2015) Modeling TauD-J: A High-Spin Nonheme Oxoiron(IV) Complex with High Reactivity toward C–H Bonds. Journal of the American Chemical Society, 137, 2428-2431.
  • Al-Afyouni, M.H., et al., (2015) Spin Isomers and Ligand Isomerization in a Three-Coordinate Cobalt(I) Carbonyl Complex. Journal of the American Chemical Society, 137, 10689-10699.
  • Yao, J., et al., (2014) Ammonia-Driven Chirality Inversion and Enhancement in Enantiodifferentiating Photocyclodimerization of 2-Anthracenecarboxylate Mediated by Diguanidino-γ-cyclodextrin. Journal of the American Chemical Society, 136, 6916-6919.
  • Suzuki, A. and Yui, H. (2014) Crystallization of Confined Water Pools with Radii Greater Than 1 nm in AOT Reverse Micelles. Langmuir, 30, 7274-7282.
  • Schley, N.D. and Fu, G.C. (2014) Nickel-Catalyzed Negishi Arylations of Propargylic Bromides: A Mechanistic Investigation. Journal of the American Chemical Society, 136, 16588-16593.
  • Rittle, J., et al., (2014) A 106-Fold Enhancement in N2-Binding Affinity of an Fe2(ì-H)2 Core upon Reduction to a Mixed-Valence FeIIFeI State. Journal of the American Chemical Society, 136, 13853-13862.
  • Oloo, W.N., et al., (2014) Identification of a low-spin acylperoxoiron(III) intermediate in bio-inspired non-heme iron-catalysed oxidations. Nature Communications, 5, 3046 EP  -.
  • Ohshita, J., et al., (2014) Synthesis of Group 14 Dipyridinometalloles with Enhanced Electron-Deficient Properties and Solid-State Phosphorescence. Organometallics, 33, 517-521.
  • McCusker, C.E., et al., (2014) Excited State Equilibrium Induced Lifetime Extension in a Dinuclear Platinum(II) Complex. The Journal of Physical Chemistry A, 118, 10391-10399.
  • Matsumoto, T., et al., (2014) Programmable spin-state switching in a mixed-valence spin-crossover iron grid. Nature Communications, 5, 3865 EP  -.
  • Kawai, M., et al., (2014) Influence of Ligand Flexibility on the Electronic Structure of Oxidized NiIII-Phenoxide Complexes. Inorganic Chemistry, 53, 10195-10202.
  • Bang, S., et al., (2014) Redox-inactive metal ions modulate the reactivity and oxygen release of mononuclear non-haem iron(III)-peroxo complexes. Nat Chem, 6, 934-940.
  • Arafune, H., et al., (2014) Trinucleotide duplex formation inside a confined nanospace under supercooled conditions. Nat Commun, 5, 5151.
  • Yamaguchi, A. and Denda, T. (2013) Inclusion Complexation of γ-Cyclodextrin and Coumarin Dye inside Alumina Nanopores over a Temperature Range of 303-233 K. The Journal of Physical Chemistry C, 117, 17567-17573.
  • Tan, Y.S., et al., (2013) Supramolecular Isomerism in a Cadmium Bis(N-Hydroxyethyl, N-isopropyldithiocarbamate) Compound: Physiochemical Characterization of Ball (n = 2) and Chain (n = ‡) Forms of {Cd[S2CN(iPr)CH2CH2OH]2Esolvent}n. Crystal Growth & Design, 13, 3046-3056.
  • Tamaki, Y., et al., (2013) Red-Light-Driven Photocatalytic Reduction of CO2 using Os(II)-Re(I) Supramolecular Complexes. Inorganic Chemistry, 52, 11902-11909.
  • McCusker, C.E. and Castellano, F.N. (2013) Design of a Long-Lifetime, Earth-Abundant, Aqueous Compatible Cu(I) Photosensitizer Using Cooperative Steric Effects. Inorganic Chemistry, 52, 8114-8120.
  • Johansson, P.G., et al., (2013) Distance Dependent Electron Transfer at TiO2 Interfaces Sensitized with Phenylene Ethynylene Bridged RuII–Isothiocyanate Compounds. Journal of the American Chemical Society, 135, 8331-8341.
  • Inhulsen, I., et al., (2013) Highly diastereodifferentiating and regioselective [2+2]-photoreactions using methoxyaromatic menthyl cyclohexenone carboxylates. Tetrahedron, 69, 782-790.
  • Hu, K., Robson, et al., (2013) Intramolecular and Lateral Intermolecular Hole Transfer at the Sensitized TiO2 Interface. Journal of the American Chemical Society, 136, 1034-1046.
  • Donnell, R.M., et al., (2013) Excited-State Relaxation of Ruthenium Polypyridyl Compounds Relevant to Dye-Sensitized Solar Cells. Inorganic Chemistry, 52, 6839-6848.
  • Chen, M.S., et al., (2013) Enhanced Solid-State Order and Field-Effect Hole Mobility through Control of Nanoscale Polymer Aggregation. Journal of the American Chemical Society, 135, 19229-19236.
  • Achey, D. and Meyer, G.J. (2013) Ligand Coordination and Spin Crossover in a Nickel Porphyrin Anchored to Mesoporous TiO2 Thin Films. Inorganic Chemistry, 52, 9574-9582.
  • Asami, K., et al., (2012) New Insights into the Electronic Structure and Reactivity of One-Electron Oxidized Copper(II)-(Disalicylidene)diamine Complexes. Inorganic Chemistry, 51, 12450-12461.
  • Fillol, J.L., et al., (2011) Efficient water oxidation catalysts based on readily available iron coordination complexes. Nat Chem, 3, 807-813.

CryoSpeK UV USP-203-B: Cryostat for UV-VIS Spectrophotometers and Fluorescence Spectrometers

Includes Main Body, Liquid Nitrogen Reservoir, Temperature Controller. Input 100-120V, 50/60Hz

CoolSpeK CD USP-203CD-B: Cryostat for CD Spectrophotometers

Includes Main body, liquid nitrogen Reservoir, Temperature Controller. Input 100-120V, 50/60Hz

  • Magnetic stirrer
  • Quartz Cuvette
  • Adaptor for 1 mm or 2mm light path length cuvette (absorption)
  • Adaptor for 1 mm light path length cuvette (fluorescence)
  • Solid sample holder for transmittance. suitable dimension: Ø10mm or 10 x 10mm, thickness 0.0-3.2mm or 0.7-4.2mm
  • Solid sample holder for fluorescence: suitable dimension: Ø13 x 13mm,  thickness: 0.0-3.2mm or 0.7-4.2mm
  • Adaptors available for most commercial UV-VIS, Fluorescence and CD Spectrometers:


  • UNISOKU RSP-1000/ TSP-1000
  • Agilent Technologies Agilent 8453/8454
  • Agilent Technologies CARY50/60
  • Agilent Technologies CARY 5000/6000
  • Beckman DU-7400
  • Evolution300
  • Thermo Fisher Scientific: Nicolet 6700 FT-IR spectrometer
  • JASCO V-550/560/570, V-650/660/670
  • JASCO FP-6200/6500/6600/8000
  • JASCO J-720/820
  • JASCO FT/IR-610 spectrometer
  • JASCO J-1500
  • Hewlett-Packard HP8453
  • HITACHI U-2800/2900/3500
  • HITACHI F-4500/7000
  • Perkin Elmer Lambda Series
  • PE Lambda 465
  • SHIMADZU UV1800/2000/3000 Series
  • SHIMADZU UV2400/2450/2550
  • SHIMADZU RF-5300
  • SHIMADZU RF-6000
  • SCINCO S-3100



  • Horiba FluoroMax
  • Horiba Fluorolog
  • PTI QuantaMaster/ TimeMaster/ PicoMaster:
  • Custom-made spectroscopy setups