Solvent Effects on Two-Photon Absorption of Alkyne and Alkene π-bridging Chromophores  

烯／炔基有机共轭分子双光子吸收特性的理论研究-溶剂效应

作　　者：Jing Li Chuan-kui Wang Yu-zhi Song 李晶;王传奎;宋玉志(曲阜师范大学物理工程学院,曲阜273165;山东师范大学物理与电子科学学院,济南250014)

机构地区：[1]College of Physics and Engineering, Qufu Normal University, Qufu 273165, China [2]School of Physics and Electronics, 5handong Normal University, ginan 250014, China

出　　处：《Chinese Journal of Chemical Physics》2017年第1期63-70,I0001,共9页化学物理学报（英文）

摘　　要：The present work concerns the study of solvent effects on the geometrical structures, as well as one- and two-photon absorption （TPA） processes, for two series of alkyne and alkene π-bridging molecules, within the framework of the polarization continuum model. Particular emphasis was put on the characterization of solvent effects on the molecular geometrical structures and geometric distortion, which were measured by the bond-length-alternation parameter. The π centres in the compounds are seen to play a decisive role in increasing the TPA cross section and nonlinear optical properties. All studied molecules have relatively strong TPA characteristics, while the alkyne π-bridging ones yield larger TPA cross sections.

关 键 词：Nonlinear optics Two photon absorption Solvent effect Charge transfer Bond length alternation 

分 类 号：O[理学]