基于共价有机框架接枝碳点的分子印迹光聚物的制备及其性能研究  

Preparation and property study of the molecularly imprinted photopolymers based on covalent organic framework grafted carbon dots

作　　者：韩爽[1] 冷秋雪 姚艾鑫 腾福 丁雨欣 HAN Shuang;LENG Qiuxue;YAO Aixin;TENG Fu;DING Yuxin(College of Chemistry and Chemical Engineering,Qiqihar University,Qiqihar 161006)

机构地区：[1]齐齐哈尔大学化学与化学工程学院,齐齐哈尔161006

出　　处：《分析试验室》2021年第11期1320-1324,共5页Chinese Journal of Analysis Laboratory

基　　金：黑龙江省自然科学基金(QC2018073);黑龙江省教育厅科研项目(135509108)资助。

摘　　要：采用Schiff法醛胺缩合制备共价有机框架(COF),以COF接枝微波法合成的氮硫共掺杂碳点(CD)为基质,以水杨酸(SA)为模板分子,采用沉淀聚合法制备水杨酸分子印迹光聚物(CD-COF-MIPs)。通过扫描电子显微镜(SEM)对CD-COF-MIPs复合材料进行分析表征,利用荧光分光光度计、紫外分光光度计对CD-COF-MIPs进行性能表征,并测试了CD-COF-MIPs的动态及选择吸附性能,CD-COF-MIPs最大吸附量为66 mg/g,8 min中即可达到吸附平衡,对SA有良好的特异识别功能。结果表明CD-COFM IPs对水杨酸在0.01~10μg/mL范围呈良好的线性关系,可实际应用于化妆品中水杨酸样品分析,检出限为0.36 ng/mL。构建的CD-COF-MIPs荧光材料在化妆品中SA的检测及富集中有潜在的应用价值。Covalent organic framework( COF) was prepared by aldehyde-amine condensation using Schiff method. The N,S co-doped( CD) was synthesized by COF grafting microwave method,and it was used as substrate to prepare salicylic acid molecularly imprinted photopolymer( CD-COF-MIPs) using the salicylic acid( SA) as template molecule. The CD-COF-MIPs composite material was characterized by scanning electron microscope( SEM). The performance of CD-COF-MIPs was assessed by fluorescence spectrophotometer and UV spectrophotometer,and the adsorption properties of CD-COF-MIPs were further investigated. The maximum adsorption capacity of CD-COF-MIPs was 66 mg/g over SA. The adsorption equilibrium can reach within 8 min.It owned good specific recognition performance to SA. The results showed that CD-COF-MIPs had a satisfied linear relationship with SA in the range of 0. 01-10 μg/m L,and could be applied for the analysis of SA in cosmetics. The detection limit was 0. 36 ng/m L. The CD-COF-MIPs fluorescent material constructed in this paper had potential application value in the detection and enrichment of SA in cosmetics.

关 键 词：共价有机框架 碳点 水杨酸 荧光 

分 类 号：TQ028.8[化学工程] O657.3[理学—分析化学]