Picosecond time-resolved spectroscopy and the intersystem crossing rates of anthrone and fluorenone
The rise time of the T n ← T 1 absorption of anthrone in benzene is determined to be 70 ps. The mechanism of efficient intersystem crossing of anthrone has been discussed and is compared with that of benzophenene. The rise time of fluorenone has been found to be sensitive to solvent, changing from 1...
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| Published in | Chemical physics letters Vol. 43; no. 3; pp. 429 - 434 |
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| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
Elsevier B.V
01.11.1976
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| Online Access | Get full text |
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| Summary: | The rise time of the T
n
← T
1 absorption of anthrone in benzene is determined to be 70 ps. The mechanism of efficient intersystem crossing of anthrone has been discussed and is compared with that of benzophenene. The rise time of fluorenone has been found to be sensitive to solvent, changing from 140 ps in cyclohexane to 12 ns in acetone. This tendency is explained in terms of the change in the character of the lowest excited singlet state of fluorenone from ππ
* in acetone to nπ
* in cyclohexane. |
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| ISSN: | 0009-2614 1873-4448 |
| DOI: | 10.1016/0009-2614(76)80593-3 |