Fluorescence excitation spectra of jet-cooled 4-(diisopropylamino)benzonitrile and related compounds
2001 | journal article. A publication with affiliation to the University of Göttingen.
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Fluorescence excitation spectra of jet-cooled 4-(diisopropylamino)benzonitrile and related compounds
Daum, R.; Druzhinin, S.; Ernst, D.; Rupp, L.; Schroeder, J. & Zachariasse, K. A. (2001)
Chemical Physics Letters, 341(3-4) pp. 272-278. DOI: https://doi.org/10.1016/S0009-2614(01)00365-7
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- Authors
- Daum, R.; Druzhinin, S.; Ernst, D.; Rupp, L.; Schroeder, J.; Zachariasse, Klaas A.
- Abstract
- Fluorescence excitation spectra of 4-(diisopropylamino)benzonitrile (DIA BN) and 4-(dimethylamino)benzonitrile (DMABN) in thermal vapour and seeded jet expansions are compared. The spectrum of jet-cooled DIABN shows an intense 0-0-transition at 31751.8 cm(-1). The spectrum collapses at excess excitation energies above 800 cm(-1), indicating the presence of an efficient non-radiative decay channel. In the gas phase, fluorescence emission of DIABN occurs from the intramolecular charge transfer (ICT) state. The non-radiative decay channel, therefore, is attributed to rapid ICT in the isolated molecule. The related compounds 4-(methylamino)-3,5-himethylbenzonitrile (MHD), 4-(azetidinyl)-3,5-dimethylbenzonitrile (M4D), and 4-(dimethylamino)-3,5-dimethylbenzonitrile (MMD) in the jet show extremely weak and structureless emission. (C) 2001 Elsevier Science B.V. All rights reserved.
- Issue Date
- 2001
- Status
- published
- Publisher
- Elsevier Science Bv
- Journal
- Chemical Physics Letters
- ISSN
- 0009-2614