期刊
TETRAHEDRON
卷 67, 期 4, 页码 734-739出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2010.11.071
关键词
Two-photon absorption; Fluorene; Quadrupolar
资金
- National Science Council of Taiwan
We report herein the design and synthesis of two new quadrupolar D-pi-A-pi-D chromophores containing diphenyl amine and dicyanobenzene or 2,1,3-benzothiadiazole as electron donor (D) and acceptor (A), respectively, which are bridged by fluorene linkage (pi). The introduction of coplanar fluorenes is highly beneficial for the enhancement of two-photon absorption (TPA), where 1b displays a TPA cross section (sigma(2)) of up to 1975 +/- 207 GM. (C) 2010 Elsevier Ltd. All rights reserved.
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