Solvent-polarizability dependence of the relative 2 1Ag(S1)- and 1 1Bu(S2)-fluorescence intensities of 1,14-diphenyl-1,3,5,7,9,11,13-tetradecaheptaene
Journal of Chemical Physics Volume 119 Issue 8
Page 4516-4521
published_at 2003-08-22
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| File | |
| Title ( eng ) |
Solvent-polarizability dependence of the relative 2 1Ag(S1)- and 1 1Bu(S2)-fluorescence intensities of 1,14-diphenyl-1,3,5,7,9,11,13-tetradecaheptaene
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| Creator | |
| Source Title |
Journal of Chemical Physics
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| Volume | 119 |
| Issue | 8 |
| Start Page | 4516 |
| End Page | 4521 |
| Abstract |
Emission, excitation, and absorption spectra of diphenyltetradecaheptaene (DP7) have been measured in solvents with different polarizabilities, together with the Raman spectrum at room temperature. DP7 exhibits dual fluorescence from the 2 1Ag(S1) and 1 1Bu(S2) states in room temperature solution. It is shown that the 2 1Ag/1 1Bu fluorescence intensity-ratio varies significantly depending on the solvent polarizability. This observation was interpreted on the basis of the coupling strength between the 2 1Ag/1 1Bu states which is determined mainly by the 2 1Ag–1 1Bu energy separation. Fitting of the spectra with sum of Gaussians reveals a significant difference in Franck–Condon envelop between the 2 1Ag and 1 1Bu fluorescence spectra, which is originating from the large difference in the C–C and C[Double Bond]C stretching mode displacements between the 2 1Ag and 1 1Bu states.
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| NDC |
Physics [ 420 ]
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| Language |
eng
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| Resource Type | journal article |
| Publisher |
American Institute of Physics
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| Date of Issued | 2003-08-22 |
| Rights |
Copyright (c) 2003 American Institute of Physics
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[NCID] AA00694991
[ISSN] 0021-9606
[DOI] 10.1063/1.1591172
[DOI] http://dx.doi.org/10.1063/1.1591172
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