共 35 条
REVERSIBLE TRIPLET TRIPLET ENERGY-TRANSFER WITHIN A COVALENTLY LINKED BICHROMOPHORIC MOLECULE
被引:204
作者:

FORD, WE
论文数: 0 引用数: 0
h-index: 0
机构: Center for Photochemical Sciences, Department of Chemistry, Bowling Green State University, Bowling Green

RODGERS, MAJ
论文数: 0 引用数: 0
h-index: 0
机构: Center for Photochemical Sciences, Department of Chemistry, Bowling Green State University, Bowling Green
机构:
[1] Center for Photochemical Sciences, Department of Chemistry, Bowling Green State University, Bowling Green
关键词:
D O I:
10.1021/j100186a026
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
The localized photoexcitation of a Ru(II) polypyridine complex covalently attached by a flexible link to pyrene results in a rapid intramolecular transfer of triplet energy with a forward rate constant of (1.3 +/- 0.3) x 10(8) s-1 in deaerated methanol solution. On account of the energetic proximity of the states, reverse transfer occurs with a rate constant lower by a factor of 18 +/- 3. This equilibration is rapid compared with the relaxation processes that are deactivating the system, which have a common lifetime of 11.2 +/- 0.4-mu-s. These results may be the first direct observation of an equilibrium being reached in an intramolecular triplet energy transfer reaction.
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页码:2917 / 2920
页数:4
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