Spectroscopic and photophysical studies of apparent cluster-to-organic-acceptor charge transfer in a molecular cadmium sulfide assembly

被引:7
作者
Yoon, DI [1 ]
Selmarten, DC [1 ]
Lu, H [1 ]
Liu, HJ [1 ]
Mottley, C [1 ]
Ratner, MA [1 ]
Hupp, JT [1 ]
机构
[1] LUTHER COLL,DEPT CHEM,DECORAH,IA
关键词
D O I
10.1016/0009-2614(96)00046-2
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
A nitrobenzene (NB) decorated cadmium sulfide cluster, [Cd-4(S-NB)(10)][N(CH3)(4)](2), has been prepared and examined spectroscopically. The assembly exhibits an intense cluster-to-attached-acceptor charge-transfer band at 376 nm. Observation of back electron transfer (nitrobenzene to cluster) via time resolved luminescence yields a rate constant of greater than or equal to 5 x 10(9) s(-1). Raman studies show that seven vibrational modes are coupled to the electron transfer reaction and that those exhibiting the greatest initial-state/final-state displacements are the Cd-S and N-O stretches. Despite the activity of nu(Cd-S), however, the electron donor is more appropriately characterized as an individual sulfur atom, rather than a delocalized assembly.
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页码:84 / 89
页数:6
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