発表論文

2010-2013

Kinetics of Photon Upconversion in Ionic Liquids: Energy Transfer between Sensitizer and Emitter Molecules
Yoichi Murakami1, Hitomi Kikuchi, and Akio Kawai
1Global Edge Institute, Tokyo Institute of Technology
J. Phys. Chem. B, 117 (8), 2487–2494 (2013)

Analysis of Low-Lying Gerade Rydberg States of Acetylene Using Two-Photon Resonance Fluorescence Excitation Spectroscopy
Kazuhide Tsuji1, Kentaro Misawa2, Junichi Awamura, Akio Kawai, and Kazuhiko Shibuya
1Gunma National College of Technology
2Chemical Resources Laboratory, Tokyo Institute of Technology
J. Phys. Chem. A, 117 (7), 1420–1427 (2013)

Gas phase electronic absorption spectroscopy of room temperature ionic liquids: N-Ethyl-3-methylpyridinium or 1-butyl-3-methylimidazolium cation with bis(trifluoromethylsulfonyl)amido anion
Takahiro Ogura, Nobuyuki Akai1, Akio Kawai, Kazuhiko Shibuya
1Tokyo University of Agriculture and Technology
Chem. Phys. Lett, 555, 110-114 (2013)

Intensity Enhancement of Weak O2 a1Δg → X3Σg Emission at 1270 nm by Collisions with Foreign Gases
Takehiro Hidemori, Nobuyuki Akai, Akio Kawai, and Kazuhiko Shibuya
J. Phys. Chem. A, 116 (9), 2032–2038 (2012)

Red-light-induced Photoreaction of DMS-O3 Complex in a Cryogenic Neon Matrix
Daisuke Wakamatsu, Nobuyuki Akai, Akio Kawai, and Kazuhiko Shibuya
Chem. Lett. 2012, 41, 252-253

Isomerization dynamics of the 2-phenylazo-1,3-dimethylimidazolium cation photoexcited to the S2 (π, π*) state as studied by transient absorption spectroscopy in the time domain of 10-13 to 103 seconds
A. Ida, B. Cohen, T. Asaka, A. Kawai, J. A. Organero, K. Shibuya and A. Douhal
Phys. Chem. Chem. Phys. 13, 20318-20325 (2011)

Water assisted photo-oxidation from hydroquinone to p-benzoquinone in a solid Ne matrix
Nobuyuki Akai, Akio Kawai, Kazuhiko Shibuya
J. Photochem. Photobio. A: Chem. 223, 182-188 (2011)

Hydrodynamic Interpretation on the Rotational Diffusion of Peroxylamine Disulfonate Solute Dissolved in Room Temperature Ionic Liquids As Studied by Electron Paramagnetic Resonance Spectroscopy
Yusuke Miyake, Nobuyuki Akai, Akio Kawai, Kazuhiko Shibuya
J. Phys. Chem. A 115, 6347-6356 (2011)

Ion-pair structure of vaporized ionic liquid studied by matrix-isolation FTIR spectroscopy with DFT calculation: A case of 1-ethyl-3-methylimidazolium trifluoromethanesulfonate
Nobuyuki Akai, Akio Kawai, Kazuhiko Shibuya
J. Phys. Chem. A 114, 12662-12666 (2010).

Matrix-isolation infrered spectra of HOOBr and HOBrO produced upon VUV light irradiation of HBr/O2/Ne system
Nobuyuki Akai, Daisuke Wakamatsu, Takeo Yoshinobu, Akio Kawai and Kazuhiko Shibuya
Chem. Phys. Lett. 499, 117-120 (2010)

Kinetic study on the photoabsorption process of gaseous O2 dimol at 630nm in a wide pressure range
Akira Ida, Eiji Furui, Nobuyuki Akai, Akio Kawai and Kazuhiko Shibuya
Chem. Phys. Lett. 488, 130-134 (2010)

Photochromic Reaction of a Novel Room Temperature Ionic Liquid: 2-Phenylazo-1-hexyl-3-methylimidazolium Bis(pentafluoroethylsulfonyl)amide
Akio Kawai, Daiki Kawamori, Tomoo Monji, Tooru Asaka, Nobuyuki Akai and Kazuhiko Shibuya
Chem. Lett. 39, 230-231 (2010)

Photochromism of 3-butyl-1-methyl-2-phenylazoimidazolium in room temperature ionic liquids
Tooru Asaka, Nobuyuki Akai, Akio Kawai and Kazuhiko Shibuya
J. Photochem. Photobio. A: Chem. 209, 12-18 (2010)

2005-2009

Infrared Spectroscopy and Quantum Chemical Calculations of OH-(H2O)n Complexes
Kazuhide Tsuji and Kazuhiko Shibuya
J. Phys. Chem. A 113, 9945-9951 (2009)

Neon matrix-isolation infrared spectrum of HOOCl measured upon the VUV-light irradiation of an HCl/O2 mixture
Takeo Yoshinobu, Nobuyuki Akai, Akio Kawai and Kazuhiko Shibuya
Chem. Phys. Lett., 477(1-3), 70-74 (2009)

Observation of collision-induced near-IR emission of singlet oxygen O2 a1?g generated by visible light excitation of gaseous O2 dimol
Eiji Furui, Nobuyuki Akai, Akira Ida, Akio Kawai, Kazuhiko Shibuya
Chem. Phys. Lett. 471, 45-49 (2009)

Cryogenic Neon Matrix-Isolation FTIR Spectroscopy of Evaporated Ionic Liquids: Geometrical Structure of Cation-Anion 1:1 Pair in the Gas phase
Nobuyuki Akai, David Parazs, Akio Kawai, Kazuhiko Shibuya
J. Phys. Chem. B 113, 4756-4762 (2009)

EPR Study of Rotational Diffusion in Viscous Ionic Liquids: Analysis by a Fractional Stokes?Einstein?Debye Law
Yusuke Miyake, Takehiro Hidemori, Nobuyuki Akai, Akio Kawai, Kazuhiko Shibuya, Shinichi Koguchi, Tomoya Kitazume
Chem. Letters., 38(2), 124-125 (2009)

First observation of the matrix-isolated FTIR spectrum of vaporized ionic liquid: and example of emimTFSI, 1-Ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide
Nobuyuki Akai, Akio Kawai, Kazuhiko Shibuya
Chem. Letters., 37(3), 256-257 (2008)

Charge-Transfer Controlled Exchange Interaction in Radical-Triplet Encounter Pairs as Studied by FT-EPR Spectroscopy
Akio Kawai, Kazuhiko Shibuya
J. Phys. Chem. A, 111(23), 4890-4901 (2007)

Infrared spectroscopy of ozone-water complex in a neon matrix
Masashi Tsuge, Kazuhide Tsuji, Akio Kawai, and Kazuhiko Shibuya
J. Phys. Chem. A, 111(18), 3540-3547 (2007)

Enhanced intersystem crossing of S1-T1 and T1-S0 in coronene-galvinoxyl systems as studied by a pulsed ESR method
Hajime Terazono, Akio Kawai, Kazuhide Tsuji, and Kazuhiko Shibuya
J. Photochem. Photobio. A: Chem. 183, 22-30 (2006)
doi:10.1016/j.jphotochem.2006.02.014

Electron Spin Dynamics of Triplet and Doublet Molecules in Room Temperature Ionic Liquids Studied by A Time-resolved EPR Method
Akio Kawai, Takehiro Hidemori and Kazuhiko Shibuya
Mol.Phys.,104[10-11], 1573-1579 (2006)
doi:10.1080/00268970500513602

Jet spectroscopy of arylmethyl radicals in the visible region: assignment of low-frequency vibrational modes in diphenylmethyl and chlorodiphenylmethyl radicals
M. Tsuge, S. Hamatani, A. Kawai, K. Tsuji and K. Shibuya
Phys. Chem. Chem. Phys., 2006, 8, 256 - 263
doi:10.1039/b508573j

Evidence for a non-planar conformer and conformational isomerization of o-fluoroanisole in a low-temperature Ar matrix
T. Isozaki, K. Sakeda, T. Suzuki, T. Ichimura, K. Tsuji and K. Shibuya
Chem. Phys. Letters 409[1-3], 93-97 (2005)
doi:10.1016/j.cplett.2005.04.086

N(4S) Formation following 193.3 nm ArF laser irradiation of NO and NO2 and its application to kinetic studies of N(4S) reactions with NO and NO2
T. Nakayama, K. Takahashi, Y. Matsumi, and K. Shibuya
J. Phys. Chem. A 109, 10897-10902 (2005)
10.1021/jp054089c

Experimental product study of the OH-initiated oxidation of m-Xylene
Jun Zhao, Renyi Zhang, Kentaro Misawa and Kazuhiko Shibuya
Journal of Photochemistry and Photobiology A: Chemistry 176 (2005) 199-207
doi:10.1016/j.jphotochem.2005.07.013

Evidence of phenoxymethyl radical formation in laser photolyses of anisole in solution
Mayaka Ando, Shigeru Yoshiike, Tadashi Suzuki, Teijiro Ichimura, Tetsuo Okutsu, Minoru Ueda, Hiroaki Horiuchi, Hiroshi Hiratsuka, Akio Kawai, and Kazuhiko Shibuya.
J.Photochem.Photobio. A :Chemistry, 174, 194-198, (2005)
doi:10.1016/j.jphotochem.2005.02.010

Solvation of a-hydroxydiphenylmethyl radical in room temperature ionic liquids studied by transient FT-EPR spectroscopy
Akio Kawai, Takehiro Hidemori, and Kazuhiko Shibuya
Chem.Phys.Letters, 414, 378-383, (2005)
doi:10.1016/j.cplett.2005.08.030


2000-2004

Polarity of ionic liquid as examined by EPR spectroscopy
A. Kawai, T. Hidemori and K. Shibuya
Chem. Letters. 33[11], 1464-1465 (2004)

Temporal and latitudinal distributions of stratospheric N2O isotopomers
S. Toyoda, N. Yoshida, T. Urabe, Y. Nakamura, T. Suzuki, K. Tsuji, K. Shibuya, S. Aoki, T. Nakazawa, S. Ishidoya, K. Ishijima, S. Sugawara, T. Machida, G. Hashida, S. Morimoto, and H. Honda
J. Geophys. Res., 109, D08308, doi:10.1029/2003JD.004316 (2004)

Protonation and multi-hydrogenation of benzophenone (BP) in BP/toluene and BP/ethanol binary cation clusters
Akio Kawai, Hironao Tanaka, Yoshiki Nakashima, Toshifumi Iimori, Kazuhide Tsuji, Kinichi Obi, and Kazuhiko Shibuya
Chem. Phys. Letters 381, 354-361 (2003)

Rate Coefficient for the Reaction of CCl3 Radicals with Ozone
Takashi Imamura, Hidekazu Chono, Kazuhiko Shibuya, and N. Washida
Int. J. Chem. Kinet. 35, 310-316 (2003)

Vibrational level dependence of lifetime of NO2 in the 2B2 state
K. Tsuji, M. Awamura, A. Kawai, and K. Shibuya
Chem. Phys. Letters 374[5/6], 601-607 (2003)

Control of ferromagnetic and antiferromagnetic couplings in a galvinoxyl-triplet chrysene encounter complex through solvent polarity
A. Kawai, Y. Watanabe, and K. Shibuya
Chem. Phys. Letters 372[1], 8-14 (2003)

Dispersed Fluorescence Spectra of Jet-Cooled Benzophenone Ketyl Radical: Assignment of the Low-Frequency Vibrational Modes
S. Hamatani, K. Tsuji, A. Kawai, and K. Shibuya
Phys. Chem. Chem. Phys. 5[7], 1370-1375 (2002)

Energy separation between quartet and doublet spin states of radical-triplet molecule pairs; unusual ferromagnetic interaction in a 1,1-diphenyl-2-picrylhydrazyl and triplet coronene system
A. Kawai and K. Shibuya
J. Phys. Chem. A 106[51], 12305-12314 (2002)

Laser Induced Fluorescence, Dispersed Emission, and Lifetime Measurements of Jet-Cooled Chloro-Substituted Benzyl Radicals
S. Hamatani, K. Tsuji, A. Kawai, and K. Shibuya
Chem. Phys. Letters 360[5-6], 466-472 (2002)

Spectroscopy and Predissociation of Acetylene in the np Gerade Rydberg States
K. Tsuji, N. Arakawa, A. Kawai, and K. Shibuya
J. Phys. Chem. A 106[5], 747-753 (2002)

Time resolved ESR study on energy splitting of quartet and doublet states in radical-triplet encounter pairs
A. Kawai, Y. Watanabe, and K. Shibuya
Mol. Phys. 100[8], 1225-1234 (2002)

Time Resolved ESR Study on the Photochemical Reactions of Pyrene and Nitroxide Radical System in Micelle; Formation of Spin Correlated Pyrene Cation-Nitroxide Pairs
Akio Kawai, Atsushi Shikama, Masaaki Mitsui and Kinichi Obi
Bull. Chem. Soc. Jpn. 74, 1203-1211 (2001)

A Kinetic Study on the Spin Polarization Switching of Benzil in the Presence of Triethylamine
Tetsuo Okutsu, Masaki Ooyama, Katsuhiko Tani, Hiroshi Hiratsuka, Akio Kawai and Kinichi Obi
J. Phys. Chem. A. 105, 3741-3744 (2001)

Specific Solvent Effect on the Structure and Reaction Dynamics of Benzophenone Ketyl Radical
A. Kawai, M. Hirakawa,T. Abe, K. Obi, and K. Shibuya
J. Phys. Chem. A 105[42], 9628-9636 (2001)

The Electronic Spectrum of Jet-Cooled FeC in the Visible Region
K. Aiuchi and K. Shibuya
J. Mol. Spectrosc. 209[1], 92-104 ( 2001)

Near Infrared Diode Laser Spectroscopy of FeC in the 0.8 mm Region: A Simultaneous Analysis of the X3Di and [3.8]1D States
M. Fujitake, A. Toba, M. Mori, F. Miyazawa, N. Ohashi, K. Aiuchi, and K. Shibuya
J. Mol. Spectrosc. 208[2], 253-270 ( 2001)

Nature of excited singlet and non-phosphorescent triplet states of perinaphthenone
Tetsuo Okutsu, Shinich Noda, Shigeo Tanaka, Akio Kawai, Kinichi Obi and Hiroshi Hiratsuka
J. Photochem. Photobio. A :Chemistry, 132, 37-41 (2000)

Exciplex formation reaction in benzaldehyde/1,4-dimethoxybenzene clusters
Akio Kawai, Ruji Kohno, Nobuhiro Oki, and Kinichi Obi
Chem. Phys. Lett. 318, 85-92 (2000)

An OH Monitoring Method Using Infrared-Ultraviolet Double Resonance Laser Induced Fluorescence
K. Tsuji, K. Nakata, H. Oishi, and K. Shibuya
Bull. Chem. Soc. Jpn. 73[12], 2695-2702 (2000)

Jet-Cooled Optical Spectroscopy of FeN between 16300 and 21600 cm-1
K. Aiuchi and K. Shibuya
J. Mol. Spectrosc. 204[2], 235-261 (2000)

Effect of ChargeTransferState on the Exchange Interaction of Radical-Triplet Encounter Pairs
A. Kawai, K. Shibuya, and K. Obi
Appl. Magn. Reson. 18, 343-350 (2000)

Infrared spectra of dimethylaminomethanol in low-temperature argon matrices and conformational analysis of DFT calculation
S. Kudoh, T. Uechi, M. Takayanagi, M. Nakata, N. Tanaka, and K. Shibuya
J. Mol. Struct. 524, 251-258 (2000)

1995-1999

Solvent Effects on the Complex Formation of Benzophenone Ketyl Radical and Triethylamine
T. Abe, A. Kawai, Y. Kajii, K. Shibuya, and K. Obi
J. Phys. Chem. A 103[11], 1457-1462 (1999)

Trans-cis isomerization of acetylene in the A1Au state as studied by dispersed fluorescence spectroscopy
K. Tsuji, C. Terauchi, S. Tsuchiya, and K. Shibuya
Chem. Phys. Letters 306[1-2], 41-47 (1999)

The low-lying electronic state of FeC observed 3460 cm-1 above X 3Ģ2
K. Aiuchi, K. Tsuji, and K. Shibuya
Chem. Phys. Letters 309[3-4], 229-233 (1999)

Time-of-flight mass spectroscopy of benzophenone-benzene and benzophenone-1,4-cyclohexadiene clusters using one-color multiphoton ionization method
Toshifumi Iimori, Hironao Tanaka, Akio Kawai and Kinichi Obi
Chem. Phys. Lett. 309, 351-356 (1999)

Chemically Induced Dynamic Electron Polarization in the Photoreduction of Aromatic Ketones with ƒÎƒÎ*-Type Triplet Molecules
Akio Kawai, Tetsuya Yamamoto, Tetsuo Okutsu, and Kinichi Obi
Bull. Chem. Soc. Jpn. 72, 2625-2632 (1999)

Electronic spectroscopy and predissociation mechanism of Ar-NO in the 3p Rydberg states
K. Tsuji, K. Aiuchi, K. Shibuya, and K. Obi
Chem. Phys. 231, 279-288 (1998)

Heats of Formation of Transient Radicals in Solution
K. Takeda, Y. Kajii, K. Shibuya, and K. Obi
J. Photochem. Photobio. A: Chem. 115, 109-115 (1998)

Visible Light Induced Oxygen Atom Transfer from NO2 to (CH3)3Na Cryogenic Ar Matrix
N. Tanaka, J. Oike, K. Shibuya, S. Kudoh, and M. Nakata
Rev. Chem. Intermedi. 24[8], 893-903 (1998)

Photochemical ƒ¿-Cleavage Reaction of Benzoin and Its Derivatives
N. K. Shrestha, E. J. Yagi, Y. Takatori, A. Kawai, Y. Kajii, K. Shibuya, and K. Obi
J. Photochem. Photobio. A: Chem. 116, 179-185 (1998)

Exchange Interaction in Radical-Triplet Pairs: Evidences for CIDEP Generation by Level Crossings in Triplet-Doublet Interactions
Yasuhiro Kobori, Keizo Takeda, Kazuhide Tsuji, Akio Kawai, Kinichi Obi
J. Phys. Chem. A 102, 5160-5170 (1998)

Dissociation of State Selected NO2+ Ions Studied by Threshold Photoelectron-Photoion Coincidence Techniques in the Region of 40-100 nm
K. Shibuya, S. Suzuki, T. Imamura, and I. Koyano
J. Phys. Chem. A 101[4], 685-689 (1997)

Photoinduced Dehydrogenation of 1,4-Cyclohexadiene by NO2 in a Cryogenic Ar Matrix
N. Tanaka, M. Nakata, and K. Shibuya
J. Photochem. Photobio. A: Chem. 106, 113-118 (1997)

Vibrational level structure of NO2 2A2 in the energy region of 16200-21000 cm-1: Evidence for the breakdown of C2v symmetry
K. Shibuya, C. Terauchi, M. Sugawara, K. Tsuji, K. Aoki, and S. Tsuchiya
J. Mol. Struct. 413-414, 501-509 (1997)

Vibrational Assignment and Anharmonic Resonance Analysis of the Dispersed Fluorescence and Stimulated Emission Pumping Spectra of DFCO (S0) up to 9000 cm-1
Jaison.C.Crain, Akio Kawai, Hakyun Nam, Horst Crauberg, Harry Beal, Penny Guinn, C.Bradley Moore
J. Mol. Spect. 183, 273-284 (1997)

CIDEP in Radical -Singlet Molecular Oxygen System
Akio Kawai, Masaaki Mitsui, Yasuhiro Kobori and Kinichi Obi
Applied Magn. Reson. 12, 405-410 (1997)

Visible Light Induced Oxygen Atom Transfer from NO2 to (CH3)2NH in a Cryogenic Ar Matrix
N. Tanaka, J. Oike, K. Shibuya, and M. Nakata
J. Phys. Chem. 100[12], 4873-4878 (1996)

Vibronic analysis of fluorescence spectrum of NO2 D2B2(0,0,0) in the region of 250 - 550 nm
K. Aoki, K. Hoshina, and K. Shibuya
J. Chem. Phys. 105[6], 2228-2235 (1996)

Visible Light Induced Reaction of NO2 with Propene in Low-Temperature Argon and Xenon Matrices
M. Nakata, Y. Somura, M. Takayanagi, N. Tanaka, K. Shibuya,
T. Uchimaru, and K. Tanabe
J. Phys. Chem. 100[39], 15815-15820 (1996)

Absolute magnitude of spin polarization in the radical-triplet pair mechanism: CIDEP generation by level crossings in a triplet-doublet interaction
Yasuhiro Kobori, Masaaki Mitsui, Akio Kawai, Kinichi Obi
Chem. Phys. Lett. 252, 355-361 (1996)

Time-Resolved ESR Studies on Ketyl Type Radical-Amine Complexes
Akio Kawai, Atsushi Aoki, Yasuhiro Kobori, Kinchi Obi
J. Phys. Chem. 100, 10021-10026 (1996)

The first observation of CIDEP generated through the interaction between an excited singlet oxygen molecule and free radical
Masaaki Mitsui, Keizo Takeda, Yasuhiro Kobori, Akio Kawai, Kinichi Obi
Chem. Phys. Lett. 262, 125-130 (1996)

Intermolecular vibrations of the complex of NO in the nƒÐ Rydberg states and Ar
K. Tsuji, K. Shibuya, and K. Obi
Laser Chem. 15, 157-165 (1995)

Photoinduced dehydrogenation reaction of CH3NH2 by NO2 in a cryogenic Ar matrix: Identification of CH2=NHcH2O complex
N. Tanaka, J. Oike, Y. Kajii, K. Shibuya, and M. Nakata
Chem. Phys. Letters 232[1], 109-114 (1995)

van der Waals vibrations of NO-methane complexes in the A2ƒ°+ state
M. Akiike, K. Tsuji, K. Shibuya, and K. Obi
Chem. Phys. Letters 243[1], 89-93 (1995)

Kinetic studies on photochemical reaction of C60 with amine in solution
K. Takeda, Y. Kajii, and K. Shibuya
J. Photochem. Photobio. A: Chem. 92, 69-72 (1995)

Anisotropic S1-T1 intersystem crossing of 1-chloromethylnaphthalene
Akio Kawai, Tetsuo Okutsu, Kinichi Obi
Chem. Phys. Lett. 235, 450-455 (1995)

1990-1994

Direct Observation of CIDEP Generated through Enhanced Intersystem Crossing
Yasuhiro Kobori, Akio Kawai, Kinichi Obi
J. Phys. Chem. 98, 6425-6429 (1994)

Bound-bound A2ġ+ -X2Ĩ transition of NO-Ar van der Waals complexes
K. Tsuji, K. Shibuya, and K. Obi
J. Chem. Phys. 100[8], 5441-5447 (1994)

Dissociation of Highly-Excited Triplet Benzophenone into Phenyl Radicals and Carbon Monoxide: Determination of Reaction Quantum Yield and Heat of Reaction by Time-Resolved Thermal Lensing Technique
Y. Takatori, Y. Kajii, K. Shibuya, and K. Obi
Chem. Phys. 180, 99-107 (1994)

Optical-optical double resonance spectroscopy of NO2 in the 590.1 nm region
K. Shibuya, T. Kusumoto, and H. Nagai
Laser Chem. 14, 119-129 (1994)

Time-resolved ESR spectra of the ƒ¿-hydroxybenzyl-amine complex
Akio Kawai, Yasuhiro Kobori, Kinichi Obi
Chem. Phys. Lett. 215, 203-208 (1993)

Spectroscopic Study of NO(E2ƒ°+)-Ar Complex Using the Resonance Enhanced Multiphoton Ionization Method
K. Tsuji, K. Shibuya, and K. Obi
J. Spectrosc. Soc. Jpn. 42[6], 385-391 (1993)

Rotational Quantum Number and Vibronic Symmetry of NO2 Excited with Visible Light in the Region of
563~566 nm: Optical-Optical Double Resonance Measurement and Spin-Orbit Interaction between 2B2 and 2A2 States
K. Aoki, H. Nagai, K. Hoshina, and K. Shibuya
J. Phys. Chem. 97[35], 8889-8894 (1993)

Visible-Light-Induced Reactions of NO2 with Conjugated Dienes in a Low-Temperature Ar Matrix
N. Tanaka, Y. Kajii, K. Shibuya, and M. Nakata
J. Phys. Chem. 97[27], 7048-7053 (1993)

Photochemical reaction of C60 in the presence of triethylamine in toluene
Y. Kajii, K. Takeda, and K. Shibuya
Chem. Phys. Letters 204[3,4], 283-286 (1993)

Highly excited triplet state dynamics of benzophenone studied by pump and probe time-resolved thermal lensing spectroscopy
Y. Takatori, T. Suzuki, Y. Kajii, K. Shibuya, and K. Obi
Chem. Phys. 169, 291-296 (1993)

CIDEP in the photosensitized dissociation of benzylchloride
Akio Kawai, Tetsuo Okutsu, Kinichi Obi
Chem. Phys. Lett. 198, 637-640 (1992)

Viscosity Dependence of Chemically Induced Dynamic Electron Spin Polarization Generated by the Radical-Triplet Pair Mechanism
Akio Kawai, Kinichi Obi
J. Phys. Chem. 96, 5701-5704 (1992)

First Observation of a Radical-Triplet Pair Mechanism (RTPM) with Doublet Precursor
Akio Kawai, Kinichi Obi
J. Phys. Chem. 96, 52-56 (1992)

Complex Formation of Benzophenone Ketyl Radical and Triethylamine
Y. Kajii, H. Itabashi, K. Shibuya, and K. Obi
J. Phys. Chem. 96[18], 7244-7247 (1992)

NO A2ġ+ - X2Ĩ Chemiluminescence Produced from the Reaction of Excited NO2 with Acetylene and Its Derivatives in Their Triplet States
W. Sisk, H. Endo, K. Shibuya, and K. Obi
J. Phys. Chem. 96[16], 6668-6674 (1992)

Photodissociation of Highly-Excited Triplet State of Benzophenone Studied by a Time-Resolved Thermal Lensing Technique
Y. Kajii, T. Suzuki, Y. Takatori, K. Shibuya, and K. Obi
Bull. Chem. Soc. Jpn. 65, 1349-1355 (1992)

Relaxation Processes of Highly-Excited Naphthalene in Solution
Studied by Time-Resolved Thermal Lensing Technique
T. Suzuki, Y. Kajii, K. Shibuya, and K. Obi
Chem. Phys. 161, 447-452 (1992)

Photocyclization of Diphenylamine Studied by Time-Resolved Thermal Lensing: Heat of Reactions, Energetics and Reactivity of Intermediates
T. Suzuki, Y. Kajii, K. Shibuya, and K. Obi
Bull. Chem. Soc. Jpn. 65[4], 1084-1088 (1992)

Spin Polarization Generated in the Triplet-Doublet Interaction: Hyperfine Dependent Chemically Induced Dynamic Electron Polarization
Akio Kawai, Tetsuo Okutsu, Kinichi Obi
J. Phys. Chem. 95, 9130-9134 (1991)

Dual Spin Polarization of CIDEP in Benzil/Quencher Systems
Tetsuo Okutsu, Kouki Yano, Akio Kawai, Kinichi Obi
J. Phys. Chem. 95, 5401-5405 (1991)

Transient absorption, lifetime and relaxation of C60 in the triplet state
Y. Kajii, T. Nakagawa, S. Suzuki, Y. Achiba, K. Obi, and K. Shibuya
Chem. Phys. Letters 181[2,3], 100-104 (1991)

Calorimetric Standards for Photothermal Methods in Ultraviolet and Visible Spectral Regions
T. Suzuki, Y. Kajii, K. Shibuya, and K. Obi
Rev. Chem. Intermedi. 15, 261-270 (1991)

Possible rotationally resolved detection of NO2 in the C2A2 state by optical-optical double resonance spectroscopy
K. Shibuya, T. Kusumoto, H. Nagai, and K. Obi
J. Chem. Phys. 95[1], 720-721 (1991)

Spin-Orbit Induced and Symmetry Forbidden C2A2 -X2A1 Absorption of NO2 Using OODR Spectroscopy in the 588~591 nm Range
H. Nagai, T. Kusumoto, K. Aoki, K. Shibuya, and K. Obi
J. Phys. Chem. 95[5], 2718-2722 (1991)

CIDEP in the photodissociation of 1-chloromethylnaphthalene
Akio Kawai, Tetsuo Okutsu, Kinichi Obi
Chem. Phys. Lett., 174, 213-218 (1990)

Optical-optical double resonance study of NO2 in the region of 612 -
614 nm: The role of 2A1 vibronic levels as dark and perturbing state
H. Nagai, K. Shibuya, and K. Obi
J. Chem. Phys. 93[11], 7656-7665 (1990)

Vibronic Excitation of Oxygen-Atom Transfer from NO2 to Ethylene by Long-Wavelength Visible Light in a Cryogenic Matrix
M. Nakata, K. Shibuya, and H. Frei
J. Phys. Chem. 94[21], 8168-8175 (1990)