Chemical Physics Letters p. 253 - 258 (2005)
Update date:2022-08-02
Topics:
Ren, Yan
Xin, Qian
Tao, Xu-Tang
Wang, Lei
Yu, Xiao-Qiang
Yang, Jia-Xiang
Jiang, Min-Hua
Two novel multi-branched organic compounds, 1,2,4,5-tetrakis[(4′-N,N- diethylamino)styryl]benzene (TDEASB) and 1,2,4,5-tetrakis[(4′-N,N- dibutylamino)styryl]benzene (TDBASB), with strong electronic coupling among the conjugated arms, have been designed and synthesized. Their single-photon and two-photon absorption (TPA) and photoluminescent (PL) properties have been studied carefully. The two-photon absorption cross-sections of the two compounds were estimated by two-photon excited fluorescence technique using 200 fs, 76 MHz, Ti:sapphire laser, which are as high as 810 and 1030 GM for TDEASB and TDBASB, respectively. The strong TPA cross-sections indicate excellent conjugation and electron delocalization properties in these benzene-core based multi-branched compounds.
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