A two-photon absorption study of fluorene and carbazole derivatives. The role of the central core and the solvent polarity
A two-photon absorption study of fluorene and carbazole derivatives. The role of the central core and the solvent polarity
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DOI：
10.1016/j.cplett.2007.09.044
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发表时间：
2007-10-25
影响因子：
2.8
通讯作者：
Mikroyannidis, J.
中科院分区：
文献类型：
--
作者：
Fitilis, I.;Fakis, M.;Mikroyannidis, J.
研究了一系列对称芴和咔唑衍生物的双光子吸收（TPA）特性，以确定中心核的作用和溶剂极性。该分子带有三苯胺、恶二唑和芘，分别作为给电子体、电子受体和π共轭边缘取代基。具有芴核的三苯胺和芘取代基以及具有咔唑核的恶二唑取代基构成了增强TPA性能的最佳选择。研究溶剂极性的影响表明，在中等极性的溶剂中可实现最大 TPA 横截面（高达 1024 GM）。 (C)2007 由 Elsevier B.V. 出版
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.