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1990 Fiscal Year Final Research Report Summary

Charge-transfer State Formation in Supercritical Fluids

Research Project

Project/Area Number 01470005
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 物理化学一般
Research InstitutionKYOTO UNIVERSITY (1990)
The University of Tokyo (1989)

Principal Investigator

KAJIMOTO Okitsugu  Faculity of Science Kyoto University Professor, 理学部, 教授 (30029483)

Co-Investigator(Kenkyū-buntansha) HONMA Kenji  Department of Material Science Faculty of Science Himeji Institute of Technology, 理学部, 助教授 (30150288)
Project Period (FY) 1989 – 1990
KeywordsCharge-transfer / Supercritical Fluid / Resonance Raman / Cluster / Spectral Shift
Research Abstract

The present study consists of the following four items :
1. Raman spectra of 4-N,N-dimethylaminobenzonitrile (DMABN) .
2. CARS spectra of molecules forming intramolecular charge-transfer (CT) state.
Raman spectra of acetone and CH_3CN in supercritical fluids.
4. Charge-transfer state formation in supercritical fluids.
The original purpose of this study was to obtain the Raman spectrum of the CT state of DMABN to verify the perpendicularity between the benzene and the dimethylamino planes. However, even with the time-delayd resonance Raman spectroscopy, it turned out that the observation of the Raman spectra of the CT state was quite difficult due to the background fluorescence. Then we attempted to observe the CARS spectrum, again being unsuccessful because of the absence of an appropriate excited state resonant with the Raman excitation.
Nevertheless, we gained important information concerning the Raman shift and the CT reaction rate in supercritical fluids as a function of density in the course of the above experiments. The Raman shift contained the rich information on the local environment for the oscillator, which was further analyzed by means of Buckingham's perturbation theory combined with the Percus-Yevick integral equation. Furthermore, the density dependence of the CT formation rate in DMABN was determined in supercritical CF_3H and interpreted in terms of the average clustering number in supercritical solutions.

  • Research Products

    (18 results)

All Other

All Publications (18 results)

  • [Publications] O.Kajimoto, K.Yamasaki, K.Honma: "Interamolecular charge-transfer reactions studied in a supercritical fluid of varying densities." Faraday Discuss,Chem.Soc.85. 65-75 (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Honma, K.Arita, K.Yamasaki, O.Kajimoto: "Microscopic solvation of aceton to 9,9'-binathryl studied in a free jet:Polar excited state formation." J.Chem.Phys.94. 3496-3503 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] S.Akimoto, O.Kajimoto: "Solvent-induced shift of the Raman sepctra in supercritical fluids" Chem.Phys.Lett.209. 263-268 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] O.Kajimoto, T.Nayuki, K.Honma: "Picosecond dynamics of the twisted intramolecular charge-transfer state formation of 4-(N.N-dimethylamino)benzonitrile(DMABN) in supercritical fluid solvent" Chem.Phys.Lett.209. 357-359 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Honma, O.Kajimoto: "Symmetry demand in polar excited state formation of 9,9'-bianthryl in clusters with some ketones" J.Chem.Phys.101. 1752-1754 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Kajimoto, O., Yamasaki, K., and Honma, K.: ""Intramolecular charge-transfer reactions studied in a supercritical fluid of varying densities and in a molecular beam."" Faraday Disc.Chem.Soc.85. 65-75 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kajimoto, O.: ""Dyanmics of TICT formation in Supercritical fluid."" Proceedings of Int.Seminar on Photchem.Dynamics. 31-34 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yamasaki, K., and Kajimoto, O.: ""Solvent effect in supercritical fluid : keto-enol equilibria of acetylacetone and ethylacetoacetate."" Chem.Phys.Lett.172. 271-274 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Morita, A., and Kajimoto, O.: ""Solute-solvent interaction in nonpolar supercritical fluid : A clustering model and size distribution"" J.Phys.Chem.94. 6420-6425 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kajimoto, O., Hayami, S., Shizuka, H.: ""The LIF Spectra and the Structure of Jet-cooled 4- (9-anthryl) -N,N-dimethylaniline (ADMA) ."" Chem.Phys.Lett.177 (2). 219-222 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Honma, K., Arita, K., Yamasaki, K., and Kajimoto, O.: ""Microscopic solvation of acetone to 9,9'-bianthryl studied in a free jet : Polar excited state formation."" J.Chem.Phys. 94. 3496-3503 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kajimoto, O., Hayami, S., and Shizuka, H.: ""The LIF spectra and the structure of jet-cooled 4- (9-anthryl) -n, N-dimethylaniline (ADMA) ."" Chem.Phys.Lett. 177. 219-222 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yokoyama, H., Kajimoto, O., Ooshima, Y., and Endo, Y.: ""The structure of 4- (N,N-dimethylamino) benzonitrile and its van der Waals complexes."" Chem.Phys.Lett.179. 455-459 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kajimoto, O.: "TICT molecules in a free jet" Elsevier Science Publishers B.V.(N.Mataga, T.Okada, and H.Masuhara, Ed.). 145-154 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Honma, K., and Kajimoto, O.: "Microscopic solvation of 9.9'-bianthryl studied in its clusters with polar molecules" Elsevier Science Publishers B.V.(N.Mataga, T.Okada, and H.Masuhara, Ed.). 335-342 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Akimoto, S., and Kajimoto, O.: ""Solvent-induced shift observed in the Raman spectra of supercritical solutions."" Chem.Phys.Lett.209. 263-268 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kajimoto, O.Nayuki, T.and Kobayashi, T.: ""Picosecond dynamics of the twisted intramolecular charge-transfer state formation of 4- (N,N'-dimethylamino) benzo-nitrile in supercritical fluid solution."" Chem.Phys.Lett.209. 357-360 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Honma, K., and Kajimoto, O.: ""Symmetry demand in polar excited state formation of 9,9'-bianthryl in clusters with some ketones."" J.Chem.Phys.101. 1753-1754 (1994)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1999-03-16  

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