摘要
以二苯氨基-4-苯甲醛和邻苯二胺为前驱体,乙醇为溶剂,采用溶剂热法合成了具有高量子产率(QY=87.76%)的氮掺杂荧光碳点(N-CDs)。通过对有机溶剂和水溶液中N-CDs光学性质的考察,表明N-CDs具有良好的溶剂依赖性和化学稳定性。水的加入在N-CDs中构建氢键网格,从而实现了发射波长的红移,N-CDs溶液由蓝色变为黄色。进一步,基于N-CDs荧光试纸蓝色到黄色的可逆颜色变化,制备便携的空气湿度可视化检测试纸。此外,N-CDs还可用于荧光墨水、书写纸和荧光柔性薄膜,拓展了其在信息传递,高级防伪加密和固态荧光的应用。
Nitrogen doped fluorescent carbon dots(N-CDs)with high quantum yield(QY=87.76%)were synthesized by solvothermal method using diphenylamino-4-benzaldehyde and o-phenylenediamine as raw materials and ethanol as solvent.The optical properties of N-CDs in organic solvents and aqueous solutions were investigated,indicating that N-CDs have good solvent dependence and chemical stability.The addition of water constructed a hydrogen bonding grid in N-CDs,thereby achieving a redshift in emission wavelength,and the N-CDs solution changes from blue to yellow.Furthermore,based on the reversible color change from blue to yellow of N-CDs fluorescent test strips,a portable air humidity visualization detection test strip was prepared.In addition,N-CDs can also be used for fluorescent ink,writing paper,and fluorescent flexible films,which expanding their applications in information transmission,advanced anti-counterfeiting encryption,and solid-state fluorescence.
作者
崔赛
孟雅婷
王松柏
董川
双少敏
CUI Sai;MENG Ya-Ting;WANG Song-Bai;DONG Chuan;SHUANG Shao-Min(School of Chemistry and Chemical Engineering,and Institute of Environmental Science,Shanxi University,Taiyuan 030006,China;School of Public Health,Shanxi Key Laboratory of Environmental Health Impairment and Prevention,MOE Key Laboratory of Coal Environmental Pathogenicity and Prevention,Shanxi Medical University,Taiyuan 030001,China)
出处
《应用化学》
CAS
CSCD
北大核心
2024年第7期937-947,共11页
Chinese Journal of Applied Chemistry
基金
国家自然科学基金(No.22274090)
山西省回国留学人员科研项目(No.2021-011)资助。
关键词
碳点
溶剂依赖
纸基传感
防伪
Carbon dots
Solvent-dependent behavior
Paper-based sensing
Anti-counterfeiting
