中山大学学报（自然科学版）2026，Vol.65Issue(3)：62-69,8.DOI:10.11714/acta.snus.ZR20250254
氨基功能化聚对亚苯基亚乙烯在指纹显现中的应用
Application of amino-functionalized poly(p-phenylene vinylidene)nanoparticles in iatent fingerprint development
摘要
Abstract
The study aimed to explore new methods for revealing latent fingerprints by using amino-functionalized poly(p-phenylene vinylene)fluorescent nanoparticles(PPV-brPEI NPs)as the research object.The results showed that the drop method using PPV-brPEI NPs yields the clearest fingerprints,and the number of consecutive fingerprint impressions(1-5 times),the force applied(0.2-0.7 N),and the age of the fingerprint(1-12 d)have little effect on the revelation effect.PPV-brPEI NPs can clearly reveal the morphological and detailed features of fingerprints on several difficult substrates such as coins,rough phone cases,and tape surfaces.Compared with traditional powder methods and 502 fuming methods,this method has advantages in eliminating the interference of uneven surfaces,complex patterns,and adhesion on fingerprint revelation.However,PPV-brPEI NPs have an inhibitory effect on DNA detection.All together suggested that PPV-brPEI NPs have certain advantages in revealing oily latent fingerprints,especially on difficult substrates such as rough and complex backgrounds and sticky surfaces,with good revelation effects.It can provide a solution to the problem of fingerprint revelation on difficult substrates.At the same time,the inhibitory effect of this reagent on DNA detection also suggested subsequent reagent improvement in the future.关键词
氨基功能化聚对亚苯基亚乙烯/指纹显现/疑难客体/DNA检测/法庭科学Key words
PPV-brPEI NPs/fingerprint revelation/difficult substrate/DNA detection/forensic science分类
化学化工引用本文复制引用
王乐,王亚琳,徐杰,马荣梁,丁斌,范丽娟,樊智楠,刘捷..氨基功能化聚对亚苯基亚乙烯在指纹显现中的应用[J].中山大学学报（自然科学版）,2026,65(3):62-69,8.基金项目
公安部重点实验室项目(2023FMKFKT03) （2023FMKFKT03）
江苏省高校"青蓝工程"优秀青年骨干教师培养项目(苏教师函[2025]4号) （苏教师函[2025]4号）
