RAMAN EXCITATION-SPECTRA OF AGGREGATE MODES OF 2,2'-CYANINE

被引:21
作者
AKINS, DL
MACKLIN, JW
PARKER, LA
ZHU, HR
机构
[1] Department of Chemistry, The City College, The City University of New York, New York
基金
美国国家科学基金会;
关键词
D O I
10.1016/0009-2614(90)85648-V
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
Room temperature Raman excitation spectra of two bands attributed to coupling of intramolecular modes of adsorbed, aggregated 2,2′-cyanine with intermolecular, lattice modes are interpreted in terms of resonances with two exciton states. The existence of two exciton states supports the view that two geometrical configurations exist in adsorbed, aggregated 2,2′-cyanine even though they are undetectable by absorption or emission spectroscopies. In addition, the association of the two configurational isomers is made with absorbances that occur in low-temperature glass systems. © 1990.
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页码:564 / 568
页数:5
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