超声化学法高效合成sp^(2)-碳全共轭荧光分子  

Highly efficient synthesis of sp^(2)-C fully conjugated fluorescent molecules via sonochemical method

作　　者：杨烨鹏 胡智 张晓存 郑慧 吴靖柠希 陶娆 YANG Yepeng;HU Zhi;ZHANG Xiaocun;ZHENG Hui;WU Jingningxi;TAO Rao(School of Chemistry and Chemical Engineering,Kunming University,Kunming 650214,Yunnan,China)

机构地区：[1]昆明学院化学化工学院,云南昆明650214

出　　处：《云南大学学报(自然科学版)》2025年第1期124-130,共7页Journal of Yunnan University(Natural Sciences Edition)

基　　金：云南省教育厅科技项目(2023J0837);云南省地方本科高校基础研究联合专项(202301BA070001-128);昆明学院人才引进科研项目(YJL23018)。

摘　　要：基于Knoevenagel缩合反应,利用超声化学法快速合成了6例腈基取代的sp^(2)-碳全共轭分子材料(cn0~cn5).结合薄层层析色谱法和核磁共振氢谱法,进行了反应浓度优化和碱催化剂筛选,当醛基浓度为1 mol/L,氢氧化钠为催化剂时,反应5~23 min内高效合成6种荧光分子材料,转化率高于97%.采用紫外−可见吸收光谱和荧光光谱对材料的光学性质进行表征,并初步探索了cn2、cn3和cn4的有机发光二极管应用,在蓝紫光激发下实现了青绿色、淡紫色和鲜绿色发光.Six cyano-substituted sp^(2)-carbon fully conjugated molecular materials(namely cn0−cn5)were rapidly synthesized via sonochemical approach based on the Knoevenagel condensation.Combined with thin layer chromatography(TLC)and nuclear magnetic resonance spectroscopy(^(1)H NMR),the concentration optimization of reactants and selection of alkali catalysts were performed.When the concentration of aldehyde group was 1 mol/L and NaOH was utilized as catalyst,six fluorescent molecules were efficiently synthesized in 5−23 min,and their corresponding yields were all higher than 97%.The optical properties of these as-obtained materials were characterized by UV-vis spectroscopy and fluorescence spectroscopy.The application of organic light-emitting diodes of cn2,cn3 and cn4 was preliminarily explored.Under the excitation of blue-violet light,blue-green,light purple and bright green luminescence were found respectively.

关 键 词：sp^(2)−碳全共轭荧光分子 腈基 超声化学法 KNOEVENAGEL缩合反应 

分 类 号：O644[理学—物理化学] O433[理学—化学]