新型蒽核-三苯胺多枝化合物的合成与双光子吸收性能  

Synthesis and Two-photon Absorption Properties of Novel Anthracene Core-triphenylamine Dendrimers

作　　者：谢焕然 王筱梅[1] 梁作芹[1] XIE Huanran;WANG Xiaomei;LIANG Zuoqin(School of Materials Science and Engineering,Suzhou University of Science and Technology,Suzhou 215009,China)

机构地区：[1]苏州科技大学材料科学与工程学院,江苏苏州215009

出　　处：《合成化学》2023年第4期290-295,共6页Chinese Journal of Synthetic Chemistry

基　　金：国家自然科学基金资助项目(51803147)。

摘　　要：以2-甲基蒽醌为原料,经锌粉还原、溴素溴化和醋酸钯催化的Heck偶联反应合成了以刚性、平面性良好的蒽环分子为电荷转移中心,三苯胺为枝的MAn-G1和MAn-G2,其结构经核磁共振波谱(1 H NMR、13 C NMR)、红外光谱(IR)和质谱(MS)表征,并研究了MAn-G1和MAn-G2的线性和非线性光学性质。结果表明:随着多枝化程度的提高,分子的单光子吸收能力和荧光量子产率分别提高了6.0倍和2.2倍。在飞秒激光脉冲激发下,MAn-G2的双光子上转换荧光明显增强,相对于一代MAn-G1的双光子吸收截面(164 GM),二代MAn-G2的双光子吸收截面(8005 GM)增大了49.0倍。Two dendrimers MAn-G1 and MAn-G2 with triphenylamine as branch and anthracene-2-methyl as core were prepared from 2-methylanthraquinone by zinc powder reduction,bromination with bromine and palladium catalyzed Heck coupling reaction,and characterized by nuclear magnetic resonance spectroscopy(1 H NMR,13 C NMR),infrared spectroscopy(IR)and mass spectrometry(MS).The linear and non-linear optical properties were studied.With the increase of generation number,the molar absorbance,fluorescence quantum yields are enhanced by 6.0 and 2.2-fold,respectively.Under the action of femtosecond laser pulse,the two-photon upconversion fluorescence of MAn-G2 is significantly enhanced.The two-photon absorption cross-section of MAn-G2(164 GM)is 49.0-fold higher than that of MAn-G1(8005 GM).

关 键 词：蒽核 三苯胺多枝分子 合成 双光子吸收 还原 溴化 电荷转移 

分 类 号：O625.2[理学—有机化学]