DONOR-ACCEPTOR ENERGY-TRANSFER IN CHOLEIC ACID CRYSTALS

被引：4
|
作者：
KOOK, SK [1 ]
HANSON, DM [1 ]
机构：
[1] SUNY,DEPT CHEM,STONY BROOK,NY 11794
来源：
JOURNAL OF PHYSICAL CHEMISTRY | 1993年 / 97卷 / 38期
关键词：
D O I：
10.1021/j100140a008
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：
Direct donor-acceptor triplet excitation energy transfer is characterized in 4,4'-dibromobenzophenone/1,4-dibromonaphthalene choleic acid crystals by monitoring the phosphorescence spectra as a function of acceptor concentration. The energy-transfer efficiency does not show an abrupt change unlike the case for a polystyrene host. This difference reveals that the energy-transfer rate is significantly slower in the choleic acid system and is attributed to the intrinsically larger intermolecular distances imposed by the choleic acid lattice. The results indicate that 4,4'-dibromobenzophenone, 1,4-dibromonaphthalene, and deoxycholic acid form a single-phase structure even when mixed nonstoichiometrically and that no composition-related structural phase transition occurs.
引用
收藏
页码：9578 / 9581
页数：4
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