分析化学2025，Vol.53Issue(1)：55-64,中插1-中插3,13.DOI:10.19756/j.issn.0253-3820.241420
多色荧光铜纳米簇/淀粉复合物的制备及在手印显现中的应用
Multicolor Fluorescent Copper Nanoclusters/Starch Composites and Their Application in Fingermark Development
摘要
Abstract
On the basis of that the fluorescence wavelength of copper nanoclusters(CuNCs)could cover the entire visible region,multicolor fluorescent CuNCs/starch composites were prepared and applied in fingermark development.With L-glutathione as the reducing agent and protective ligand,blue emissive and orange emissive CuNCs solutions were obtained in alkaline solutions at 90℃and 25℃,respectively.With the aggregation-induced emission effect induced by ethanol as a poor solvent,the fluorescence of orange emissive CuNCs with a higher intensity was achieved in an ethanol-water solution.With ascorbic acid as the reducing agent and 3-mercaptopropionic acid as the protective agent,green emissive CuNCs solution was prepared in an acid solution.Particle morphologies,chemical compositions and optical properties of these three CuNCs above were investigated using physical characterization and spectroscopic analysis,indicating that well-dispersed CuNCs had excellent photoluminescent properties.These CuNCs solutions were combined with starch to form composite powders by simply drying.The influences of the type of CuNCs and the ratio of CuNCs to starch on the emission wavelength and fluorescence intensity of the products were studied.The obtained CuNCs/starch composites could emit blue,green and orange fluorescence under 365 nm ultraviolet light,respectively,which were suitable for fingermark development.Minutiae and partial level-3 features of latent fingermarks could be effectively developed.High-quality fluorescence fingermark images would be captured using appropriate optical filters to eliminate background interference of various substrates.关键词
铜纳米簇/荧光/潜在手印/手印显现/法庭科学Key words
Copper nanoclusters/Fluorescence/Latent fingermark/Fingermark development/Forensic science引用本文复制引用
袁传军,李明,孙艺斐,吕家铭,高志博,孙世强,韩沛良,刘丰赫..多色荧光铜纳米簇/淀粉复合物的制备及在手印显现中的应用[J].分析化学,2025,53(1):55-64,中插1-中插3,13.基金项目
国家自然科学基金项目(No.21802169)、辽宁省教育科学"十四五"规划课题项目(Nos.JG22DB690,JG24DB482)、辽宁省应用基础研究计划项目(No.2023JH2/101300097)和中国刑事警察学院大学生创新训练计划项目(No.D202407041059523552)资助. Supported by the National Natural Science Foundation of China(No.21802169),the Educational Science Project in the 14th Five-Year Plan from Liaoning Province(Nos.JG22DB690,JG24DB482),the Applied Basic Research Program from Liaoning Province(No.2023JF12/101300097),and the Undergraduate Innovation Training Project from Criminal Investigation Police University of China(No.D202407041059523552). （No.21802169）
