A two-photon absorption study of fluorene and carbazole derivatives. The role of the central core and the solvent polarity

被引：60
作者：
Fitilis, I.
Fakis, M. [1 ]
Polyzos, I.
Giannetas, V.
Persephonis, P.
Vellis, P.
Mikroyannidis, J.
机构：
[1] Univ Patras, Dept Phys, Patras 26504, Greece
[2] Univ Patras, Dept Chem, Patras 26504, Greece
来源：
CHEMICAL PHYSICS LETTERS | 2007年 / 447卷 / 4-6期
关键词：
D O I：
10.1016/j.cplett.2007.09.044
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：
The two-photon absorption (TPA) properties of a series of symmetrical fluorene and carbazole derivatives have been studied to determine the role of the central core and the solvent polarity. The molecules bear triphenylamine, oxadiazole and pyrene as electron donating, electron acceptor and pi-conjugated edge substituents, respectively. Triphenylamine and pyrene substituents with fluorene-core as well as oxadiazole substituent with carbazole-core constitute the optimum selections for enhanced TPA properties. Studying the effect of the solvent polarity it is shown that maximum TPA cross-sections (as high as 1024 GM) are achieved in a solvent of intermediate polarity. (C)2007 Published by Elsevier B.V.
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页码：300 / 304
页数：5
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