Novel multi-branched organic compounds with enhanced two-photon absorption benefiting from the strong electronic coupling

被引：24
|
作者：
Ren, Y [1 ]
Xin, Q [1 ]
Tao, XT [1 ]
Wang, L [1 ]
Yu, XQ [1 ]
Yang, JX [1 ]
Jiang, MH [1 ]
机构：
[1] Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R China
来源：
CHEMICAL PHYSICS LETTERS | 2005年 / 414卷 / 1-3期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1016/j.cplett.2005.08.041
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：
Two novel multi-branched organic compounds, 1,2,4,5-tetrakis[(4'-N,N-diethylamino)styryl]benzene (TDEASB) and 1,2,4,5-tetrakis[(4'-N,N-dibutylamino)styryl]benzene (TDBASB), with strong electronic coupling among the conjugated arms, have been designed and synthesized. Their single-photon and two-photon absorption (TPA) and photoluminescent (PL) properties have been studied carefully. The two-photon absorption cross-sections of the two compounds were estimated by two-photon excited fluorescence technique using 200 fs, 76 MHz, Ti:sapphire laser, which are as high as 810 and 1030 GM for TDEASB and TDBASB, respectively. The strong TPA cross-sections indicate excellent conjugation and electron delocalization properties in these benzene-core based multi-branched compounds. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：253 / 258
页数：6
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