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论文类型： 期刊论文

发表时间： 2014-03-01

发表刊物： DYES AND PIGMENTS

收录刊物： SCIE、EI、Scopus

卷号： 102

页面范围： 1-5

ISSN号： 0143-7208

关键字： Synthesis; Linear optics properties; Electrochemical; Two-photon absorption; Intramolecular charge transfer; Ladder-conjugated chromophore

摘要： Three novel ladder-conjugated chromophores indicated as LT1-LT3 were synthesized and characterized. Further studies on linear, nonlinear optics and electrochemical properties demonstrated their photophysical features respectively. Compound LT1 shows good two-photon absorption cross-section (6) up to similar to 1200 GM at 810 nm in tetrahydrofuran, which is attributed to intramolecular charge transfer effect, as supported by density functional theory theoretical calculations. Compound L12 and LT3 show considerable molar extinction coefficients, which are more than 10(5), and higher quantum yields. Structure function relationship is further discussed, suggesting a rational strategy to develop ladder-conjugated small molecules. (C) 2013 Elsevier Ltd. All rights reserved.