Light Induced Cluster-to-Organic-Acceptor Charge Transfer in a Molecular Cadmium Sulfide Assembly.
Abstract
The molecular cluster, (Cd4(S-C6H4NO2)10)?N(CH3)4!2, exhibits an intense near-UV absorption that is absent in the corresponding benzenethiolate cluster. Resonance Raman and electronic Stark effect studies show that the absorption feature originates from a pair of closely spaced cluster-to-nitrobenzene charge-transfer transitions. The lower lying charge-transfer excited state is weakly luminescent. Time resolved luminescence measurements yield a nonradiative decay or back electron transfer rate (nitrobenzene to cluster) of 3.3 x 10(exp 8)/s. Further analysis of resonance Raman scattering reveals that at least 7 vibrational modes are coupled, in a Franck-Condon sense, to the electron transfer process. In terms of absolute normal coordinate displacement, the two most important modes are Cd-S and N-O stretches. jg
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 07, 1995
- Accession Number
- ADA299985
Entities
People
- Carolyn Mottley
- Donald C. Selmarten
- Dong I. Yoon
- Hong Lu
- Hui-jean Liu
Organizations
- Northwestern University