焦糖色基高亮蓝色荧光碳点的制备及防伪应用  

Preparation of Caramel-based Bright Blue Fluorescent Carbon Dots and Their Application in Anti-counterfeiting

作　　者：马洁 秦雪 滕文媛 朱苗苗 包丽娟 卞雷 Ma Jie;Qin Xue;Teng Wenyuan;Zhu Miaomiao;Bao Lijuan;Bian Lei(College of Chemical Engineering and Technology,Tianshui Normal University,Gansu,741000;Key Laboratory for New Molecule Materials Design and Function of Gansu Universities,Gansu,741000;Key Laboratory of Advanced Optoelectronic Functional Materials of Gansu Province,Gansu,741000)

机构地区：[1]天水师范学院化学工程与技术学院,甘肃741000 [2]甘肃省高校新型分子材料设计与功能省级重点实验室,甘肃741000 [3]甘肃省先进光电功能材料重点实验室,甘肃741000

出　　处：《当代化工研究》2024年第21期169-171,共3页Modern Chemical Research

基　　金：甘肃省青年科技基金计划“基于激光诱导荧光/电容耦合非接触电导双机理检测的毛细管(芯片)电泳分析技术研究浆水中有机酸的形成机制”(项目编号:21JR1RE298);2024年度甘肃省教育科技创新项目高校教师创新基金项目“吩嗪基红色/近红外荧光纳米材料的无机盐辅助无溶剂合成研究”(项目编号:2024A-116);国家级创新创业训练计划项目“氮掺杂纳米石墨烯的绿色合成研究”(项目编号:202310739003);校级创新创业训练计划项目“基于低成本智能手机构建纸基荧光/比色双通道pH传感器”。

摘　　要：采用微波法快速合成了一种具有高亮蓝色荧光的碳点(J-CDs),并应用于荧光防伪。以焦糖色为碳源,硫酸为氧化剂,微波加热50 s,制备得到荧光量子产率达43.2%的J-CDs。J-CDs最佳激发和发射波长分别为359 nm和441 nm。将J-CDs作为荧光油墨,成功应用于纸基材料的荧光防伪和信息加密。Bright blue fluorescent carbon dots(J-CDs)were rapidly synthesized using a microwave method and applied in fluorescent anti-counterfeiting.Caramel served as the carbon source and sulfuric acid as the oxidant,with microwave heating for 50 seconds producing J-CDs with a fluorescence quantum yield of 43.2%.The optimal excitation and emission wavelengths of the J-CDs were 359 nm and 441 nm,respectively.J-CDs were successfully used as fluorescent inks for anti-counterfeiting and information encryption on paper-based materials.

关 键 词：碳点 微波法 荧光防伪 

分 类 号：TQ[化学工程]