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Investigation of Structure–property Relationships of Multi-branched Two-photon Absorption Chromophores Based on π-Conjugation Core by Jia-Xiang Yang; Cai-Xia Wang; Lin Li; Na Lin; Xu-Tang Tao; Yu-Peng Tian; Xian Zhao; Min-Hua Jiang is a Physics and Astronomy article available to read on EtoBox.

What is Investigation of Structure–property Relationships of Multi-branched Two-photon Absorption Chromophores Based on π-Conjugation Core about?

To investigate the effect of conjugated-core structure of multi-branched chromophore on linear and nonlinear optical properties, three novel multi-branched organic chromophores, 3-(3,5-bis(9-butyl-9H-carbazol-6-yl) W3) have been synthesized and characterized. Their linear absorption, one-and two-photon fluorescence properties have been investigated. All these chromophores show intense one-photon fluorescence and high fluorescence quantum yields. When exited by a Ti:sapphire laser, these chromophores exhibit strong two-photon-excited fluorescence. The two-photon absorption cross sections of W1, W2 and W3 were calculated to be 69 GM, 112 GM and 173 GM in DMF, respectively. The ratio of the three compounds from the experiment is 1:1.6:2.5. Structure-property relationships are discussed based on photophysical data and theoretical calculation, which indicate a linear enhancement in one-and two-photon absorption and emission in going from W1 via W2 to W3.

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Author

Jia-Xiang Yang; Cai-Xia Wang; Lin Li; Na Lin; Xu-Tang Tao; Yu-Peng Tian; Xian Zhao; Min-Hua Jiang

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0301-0104)

Published

2009

Language

EN

Field

Physics and Astronomy (Physical Sciences)