Investigation of two-photon absorption properties in new A–D–A compounds emitting blue and yellow fluorescence
作者:Fan Jin、Zhi-Bin Cai、Jiu-Qiang Huang、Sheng-Li Li、Yu-Peng Tian
DOI:10.1016/j.molstruc.2015.03.036
日期:2015.8
Abstract Three new acceptor–donor–acceptor compounds ( LBQ , DBQ , BYQ ) were synthesized and characterized by infrared, hydrogen nuclear magnetic resonance, mass spectrometry and elemental analysis. Their photophysical properties were investigated including linear absorption, single-photon excited fluorescence, fluorescence quantum yield and two-photon absorption. These compounds in CH 2 Cl 2 exhibit
摘要 合成了三种新的受体-供体-受体化合物(LBQ、DBQ、BYQ),并通过红外、氢核磁共振、质谱和元素分析对其进行了表征。研究了它们的光物理性质,包括线性吸收、单光子激发荧光、荧光量子产率和双光子吸收。这些化合物在CH 2 Cl 2 中表现出良好的荧光量子产率,分别为0.36、0.26和0.25,最大的双光子吸收截面分别为48、36和181 GM。在脉冲宽度为140 fs的Ti:蓝宝石激光器激发下,LBQ和DBQ发出蓝色双光子激发荧光(TPEF),而BYQ发出亮黄色TPEF。BYQ在水中具有良好的溶解性,σ可高达130 GM,