期刊
DYES AND PIGMENTS
卷 88, 期 1, 页码 57-64出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2010.05.001
关键词
Two-photon absorption; Dipolar moment change (Delta mu(ge)); Two-photon-induced polymerization; D-pi(3)-(A)(1-3) initiator; Fluorescence quenching; Intermolecular charge-transfer
资金
- National Natural Science Foundation of China [50673070, 50973077, 50773091]
- Key Project of Chinese Ministry of Education [204053]
- National Basic Research Program of China [2010CB934103]
- Science and technology development Project of Suzhou [SYJG0931]
The ability of novel branched chromophores that contained a triphenylamine group as donor, naphthalene as pi-bridge and pyridyl as acceptor group, to act as two-photon absorption and two-photon induced polymerization initiators were investigated Linear and nonlinear optical spectra revealed that chromophores with large dipolar moment change gave strong intramolecular charge-transfer characteristics that exhibited enhanced two-photon absorption cross-section A variety of micro-objects were fabricated, using an acrylate matrix, that contained the novel chromophores as two-photon induced polymerization initiator Molecular energy levels, electrochemistry and linear absorption spectra, as well as one-photon fluorescence quenching measurements supported the hypothesis that two-photon induced polymerization proceeds via intermolecular charge-transfer from initiator to monomer and, that the chromophore firstly generates the exciton via two-photon absorption and then transfers charge to the acrylate monomer which then polymerises (C) 2010 Elsevier Ltd. All rights reserved
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