中文摘要：

三二光子的吸收(TPA ) tribranched 色基成功地被准备，在哪个 1,3,5-triazine 被作为电子缺乏的核心，结合了桥牌的 1,4-phenylenedivinylene， 3,4-ethylenedioxythiophene (EDOT )(T1 ) ， N-methylpyrrole (T2 ) 或象捐赠电子的结束组的 triphenylamine (T3 ) 。他们的 photophysical 性质被吸收，一个光子和二光子的荧光和 TPA 剖面图决心学习。在 femtoseconds ( fs )的非线性的传播( NLT )测量在 800 nm 的政体显示那张 TPA 剖面图(有扩大结合的桥牌的 T1 ， T2 和 T3 的 2 价值比有一座短长度桥的相应色基 T4 大得多，并且有结束组 EDOT 的 T1 的 TPA 剖面图与有一样的长度系统的 T2 和 T3 相比展出显著改进。色基 T1， T2 和 T3 显示出也显著的起来变换的光和光限制活动。

英文摘要：

Three two-photon absorption （TPA） tribranched chromophores were successfully prepared, in which 1,3,5-triazine is been as electron deficient core, 1,4-phenylenedivinylene as conjugated bridge, 3,4-ethylenedioxy- thiophene （EDOT） （T1）, N-methylpyrrole （T2） or triphenylamine （T3） as electron-donating end-groups. Their pho- tophysical properties were studied by absorption, one- and two-photon fluorescence and TPA cross-section deter- mination. The nonlinear transmission （NLT） measurement in femtoseconds （fs） regime at 800 nm indicates that TPA cross-section σ2 values of T1, T2 and T3 with extended π-conjugated bridge are much larger than the corresponding chromophore T4 with a short length bridge, and TPA cross-section of T1 with end-groups EDOT exhibits a remarkable enhancement compared with T2 and T3 having the same length It-system. The chromophores T1, T2 and T3 show also remarkable up-converted luminescence and optical limiting activity.