A new building block, bis(thiophene vinyl)-pyrimidine, for constructing excellent two-photon absorption materials: synthesis, crystal structure and properties

被引：36
作者：
Chen, Dugang [1 ]
Zhong, Cheng [1 ]
Dong, Xiaohu [1 ]
Liu, Zhihong [1 ]
Qin, Jingui [1 ]
机构：
[1] Wuhan Univ, Dept Chem, Wuhan 430072, Peoples R China
来源：
JOURNAL OF MATERIALS CHEMISTRY | 2012年 / 22卷 / 10期
基金：
美国国家科学基金会;
关键词：
PUSH-PULL DIPOLAR; QUADRUPOLAR CHROMOPHORES; LIPID RAFTS; FLUORESCENCE; MOLECULES; DESIGN; PROBES; EXCITATION; ACCEPTORS; STORAGE;
D O I：
10.1039/c2jm14766a
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 new molecules (Py1 and Py2) of D-pi-A-pi-D motif, where the -pi-A-pi-moiety is bis(thiophene vinyl)-pyrimidine as a building block, have been designed and synthesized via the Knoevenagel and Suzuki coupling reactions. The X-ray single crystal structure analysis of Py1 showed good coplanarity in the whole building block. Their two-photon absorption (2PA) properties were measured by two-photon induced fluorescence techniques with a mode-locked Ti: sapphire pulsed laser in the range of 700-940 nm. Both Py1 and Py2 exhibited large cross-section values of 1702 and 1879 GM, respectively, no matter whether the peripheral donor is weak or strong. The results demonstrate that bis(thiophene vinyl)-pyrimidine is a new building block for constructing molecules with effective 2PA.
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收藏
页码：4343 / 4348
页数：6
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