Electronic States of a Photochromic 2-(2,4-Dinitrobenzyl) Pyridine Single Crystal

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概要

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• Polarized reflection and absorption spectra, FT-IR atad R21111011 spectra of' a 2-(2,4-dinitrobetazyl)pyridine (a-DNBP) single crystal xvere tneasttred in order to eltrcidate the elec-tronic states and vibrational naodes relexxart'rt to the photoindtrced intrauanolecttlar proton tratns['er(PIPT). Tlae naolectrlar or bital ?tnd electronic ?tbsorption spectra of' three isouners (CH., NH anadOH forrtas) of' ct-DNBP xvere atlso carlcul?tted. Fr'otta tlae pot;trized reflection spectra, xve f'otrndthat the Davydov splitting for the lowest ttlloxx'ed transitiora is considerably large, sttggestingtlaat the iratermolectrlar interaction is large. Tlae calctulatiora shows th?tt the HOIVIO-+LUlNzIOtransition of the CH2 f'orrn is very xveak ?tnd the lc.cwest alloxved arbsorptiota l.>and locarted at antrltraxxiolet region unaizuly conaes fronaa both the 2nd HOIIVIO-+LUM0 and HOIVIO-+2nd LU.kIOtransitions. On the otlaer harad, the lowest absorption 1c?tnds of' the NH ?tnd OH fornas located ata visible region are dtre to tlae HOXIO-+LUNIO tr?rtasition. Tlae resttlts f'rotn the calctrlation arequalitatively good agreement w'itla the cclrserved absorjction spectr;'t, We f'otrnd tlaat new strotagvibrational peaks art 488, 1293 anal 3386 ctaa ' appear af'ter [JV irradiation. The low f'reqtrencytorsional taaodes below 500 Clll ' are znost likely relexzant to the PIPT reaction of o-DNBP.

• 社団法人日本物理学会の論文
• 1999-04-15

著者

• TAKEDA Jun

  Department of Physics,Faculty of Science,Nagoya University

• Shinohara Shunjiro

  Department Of Physics Faculty Of Sciences University Of Tokyo

• Shinohara Shunjiro

  Department Of Physics Faculty Of Science The University Of Tokyo

• Takeda J

  Nagoya Univ. Nagoya

• Takeda Jun

  Department Of Physics Division Of Material Science Nagoya University:crest Japan Science And Technol

• Takeda Jun

  Department Of Physics Faculty Of Science Nagoya University

• SHINOHARA Saiji

  Department of Physics,Faculty of Engineering,Yokohama National University

• KURITA Susumu

  Department of Physics,Faculty of Engineering,Yokohama National University

• EGUCHI Nakaba

  Department of Physics,Faculty of Engineering,Yokohama National University

• OHISHI Shinya

  Department of Physics,Faculty of Engineering,Yokohama National University

• KODAIRA Tetsuya

  National Institute of Materials and Chemical Research

• Takeda Jun

  Department Of Diabetes And Endocrinology Division Of Molecule And Structure Gifu University School O

• Ohishi S

  Department Of Physics Faculty Of Engineering Yokohama National University

• Kurita S

  Faculty Of Engineering Yokohama National University

• Kurita Susumu

  Department Of Materials Engineering Yokohama National University

• Eguchi N

  Aoyama‐gakuin Univ. Tokyo

• Shinohara S

  Department Of Physics Faculty Of Engineering Yokohama National University

• Kurita Susumu

  Institute Of Physics The University Of Tsukuba:hiroshima Branch Japan Meteorological Agency

• Takeda Jun

  Department Of Cell Biology Institute For Molecular And Cellular Regulation Gunma University

• Takeda Jun

  Department Of Biological Sciences Graduate School Of Science Tokyo Metropolitan University

• KURITA Susumu

  Faculty of Engineering, Yokohama National University : National Magnet Laboratory, Massachusetts Institute of Technology

• Kodaira Tetsuya

  National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565

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