中文摘要：

通过Heck反应合成了2个以吡啶为端基的9，10-双芳基蒽共轭分子9，10．二{4．{4-[N,N-二（4-吡啶乙烯基）苯基]氨基}苯乙烯基}蒽（4Py．PAA）和9，10．二{4-{4．[N,N-二（2-吡啶乙烯基）苯基]氨基}苯乙烯基}蒽（2Py-PAA），化合物结构经过1HNMR，13CNMR，HRMS．MALDI．TOF确证．测定了化合物在不同极性溶剂中的紫外吸收光谱、荧光光谱、荧光寿命及量子产率，测算了4Py-PAA和2Py-PAA的偶极矩．通过循环伏安法研究了它们的前线轨道能级．测定了4Py-PAA和2Py-PAA的固体荧光光谱、固体荧光量子产率及在不同含水量的水／THF混合溶液中的荧光光谱．实验发现4Py-PAA在THF溶液中发出蓝绿色荧光，固体时发出红色荧光，在含水量为70％的水／THF混合溶剂中发出黄色荧光，荧光强度是纯四氢呋喃（THFl的3倍，呈现聚集荧光增强性质．在800nm飞秒激光下采用双光子诱导荧光参比法测定了4Py-PAA和2Py-PAA在THF溶液中的双光子吸收截面分别为193和101GM．实验结果表明含有2位和4位吡啶端基9-10．双芳基蒽共轭分子具有良好的荧光发射性能及双光子吸收性质．

英文摘要：

New dendrimers 9,10-bis {4-[N,N-bis（4-pyridylvinyl）phenylamino]styryl } anthracene （4Py-PAA） and 9,10-bis {4- [N,N-bis（2-pyridylvinyl）phenylamino]styryl}anthracene （2Py-PAA） were synthesized by Heck coupling reaction with pyridine as branches, and anthracene as the core. The structures were characterized by 1H NMR, 13C NMR, HRMS-MALDI-TOF. The UV-vis spectra, fluorescence spectra, fluorescence lifetime and quantum yields were measured, and dipole moments of 4Py-PAA and 2Py-PAA were calculated. The frontier orbitals were studied by cyclic voltammetry. Solid fluorescence spectra, fluorescence spectra in aqueous tetrahydrofuran （THF） with different water/THF ratios and absolute quantum yield of 4Py-PAA and 2Py-PAA were measured. 4Py-PAA emitted blue-green light in THF and red light in the solid state. In the sol- vent mixture with 70% water, 4Py-PAA emitted a yellow light and the intensity was 3-fold higher than that in THF. Therefore, 4Py-PAA is AIEE-active. Measured with the two-photon induced fluorescence method, the values of TPA cross-section of 4Py-PAA and 2Py-PAA in THF were 193 and 101 GM, which obtained at 800 nm wavelength from a femtosecond laser source. The results showed that 9,10-diaryl anthracene end-capped with 2-pyridine and 4-pyridine had good fluorescence and two-photon absorption properties.