期刊
CHEMICAL PHYSICS LETTERS
卷 390, 期 4-6, 页码 433-439出版社
ELSEVIER
DOI: 10.1016/j.cplett.2004.03.050
关键词
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Two-photon absorption (TPA) properties of several novel donor-acceptor-donor (D-A-D) quadrupolar and octupolar star-shaped molecules containing peripheral diarylthienylamines were investigated and are discussed in this Letter. The effects of donor-acceptor strength, conjugation length, and molecular symmetry on the effective TPA cross-section of these novel molecules were studied. It was found that incorporation of a triazine acceptor center in octupolar molecules can effectively enhance TPA response. This provides a strategy for designing novel octupolar molecules with a large TPA response but without red-shifting their linear absorption wavelengths. (C) 2004 Published by Elsevier B.V.
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