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

页码：9578 / 9581

页数：4

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