摘要Linear and nonlinear photophysical properties of two novel dipolar compounds named as trans- dimethyl-4-[4'-(N,N-dimethylamino)-styry1]-pyridin-2,6-dicarboxylate (Xiao-1) and trans-dimethyl-4-[4'-(N,N-diphenylamino)-styry1]-pyridin-2,6-dicarboxylate (Xiao-2) are investigated by steady-state absorption and fluorescence spectroscopy, Z-scan and two-photon excited fluorescence measurements. Strong two-photon fluorescence emission and the pronounced positive solvatochromism are observed from two compounds. The two-photon absorption cross section of Xiao-2 is about 1.5 times larger than that of Xiao-1. One-color and two-color femtosecond pump-probe experiments are employed to investigate the excited state dynamics of two compounds. The relaxation lifetime of the intra-molecular charge transfer state is determined to be in the hundreds of picosecond domain for both the compounds in THF, and several tens of picosecond in DMSO solutions.
Abstract：Linear and nonlinear photophysical properties of two novel dipolar compounds named as trans- dimethyl-4-[4'-(N,N-dimethylamino)-styry1]-pyridin-2,6-dicarboxylate (Xiao-1) and trans-dimethyl-4-[4'-(N,N-diphenylamino)-styry1]-pyridin-2,6-dicarboxylate (Xiao-2) are investigated by steady-state absorption and fluorescence spectroscopy, Z-scan and two-photon excited fluorescence measurements. Strong two-photon fluorescence emission and the pronounced positive solvatochromism are observed from two compounds. The two-photon absorption cross section of Xiao-2 is about 1.5 times larger than that of Xiao-1. One-color and two-color femtosecond pump-probe experiments are employed to investigate the excited state dynamics of two compounds. The relaxation lifetime of the intra-molecular charge transfer state is determined to be in the hundreds of picosecond domain for both the compounds in THF, and several tens of picosecond in DMSO solutions.
(Ultrafast processes; optical pulse generation and pulse compression)
引用本文:
WANG Yao-Chuan;ZHOU Hui;DING Jin-Liang;CHEN Qiang;XIAO Hai-Bo;TAO Xiao-Ming;QIAN Shi-Xiong. Two-Photon Fluorescence Property and Ultrafast Dynamics of Two Dipolar Compounds with Dipicolinate as Electron Acceptor[J]. 中国物理快报, 2010, 27(3): 38201-038201.
WANG Yao-Chuan, ZHOU Hui, DING Jin-Liang, CHEN Qiang, XIAO Hai-Bo, TAO Xiao-Ming, QIAN Shi-Xiong. Two-Photon Fluorescence Property and Ultrafast Dynamics of Two Dipolar Compounds with Dipicolinate as Electron Acceptor. Chin. Phys. Lett., 2010, 27(3): 38201-038201.
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2010, Vol. 27 
