应用化学 ›› 2024, Vol. 41 ›› Issue (7): 937-947.DOI: 10.19894/j.issn.1000-0518.230372

• 研究论文 • 上一篇    下一篇

溶剂依赖型碳点的制备及水含量检测和防伪应用

崔赛1, 孟雅婷1,2, 王松柏1, 董川1, 双少敏1()   

  1. 1.山西大学化学化工学院,环境科学研究所,太原 030006
    2.山西医科大学公共卫生学院,环境健康损害山西省重点实验室,煤炭环境致病与防治教育部重点实验室,太原 030001
  • 收稿日期:2023-11-28 接受日期:2024-05-06 出版日期:2024-07-01 发布日期:2024-08-03
  • 通讯作者: 双少敏
  • 基金资助:
    国家自然科学基金(22274090);山西省回国留学人员科研项目(2021-011)

Preparation of Solvent-Dependent Carbon Dots for Water Content Detection and Anti-Counterfeiting

Sai CUI1, Ya-Ting MENG1,2, Song-Bai WANG1, Chuan DONG1, Shao-Min SHUANG1()   

  1. 1.School of Chemistry and Chemical Engineering,and Institute of Environmental Science,Shanxi University,Taiyuan 030006,China
    2.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
  • Received:2023-11-28 Accepted:2024-05-06 Published:2024-07-01 Online:2024-08-03
  • Contact: Shao-Min SHUANG
  • About author:smshuang@sxu.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(22274090);the Research Project Supported by Shanxi Scholarship Cournil of China(2021-011)

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。

关键词: 碳点, 溶剂依赖, 纸基传感, 防伪

Abstract:

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.

Key words: Carbon dots, Solvent-dependent behavior, Paper-based sensing, Anti-counterfeiting

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