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The charge-transfer state of 4-dimethylamino-3,5-dimethylbenzonitrile studied in a free jet

✍ Scribed by T. Kobayashi; M. Futakami; O. Kajimoto

Publisher
Elsevier Science
Year
1987
Tongue
English
Weight
396 KB
Volume
141
Category
Article
ISSN
0009-2614

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✦ Synopsis

The formation of the charge-transfer (CT) state of 4-dimethylamino-3,Sdimethylbenzonitrile (TMABN) is studied in a supersonic free jet. In agreement with the observation byRotkiewjcz and Rubaszewska in the gas phase, the CT emission appears upon excitation of TMABN isolated in a free jet. The structureless LIF spectrum observed even in the supercooled compound suggests a significant change in geometry in the upper electronic states. From the excitation wavelength dependence, the emission was found to be composed of two kinds of fluorescence: one from the CT state and the other from a twisted higher excited S2 state.

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Picosecond dynamics of the twisted intra
Picosecond dynamics of the twisted intramolecular charge-transfer state formation of 4- (N,N-dimethylamino) benzonitrile (DMABN) in supercritical fluid solvent
✍ O. Kajimoto; T. Nayuki; T. Kobayashi πŸ“‚ Article πŸ“… 1993 πŸ› Elsevier Science 🌐 English βš– 325 KB

The rate of formation of the intramolecular charge-transfer state of 4-(N,N-dimethylamino)benzonitrile (DMABN) has been determined in supercritical CFsH using a fast single-photon counting technique. The rate constant increases rapidly with increasing CFIH density, indicating the importance of the p