三种β-取代茚三酮的合成及显现汗潜手印的研究  

Threeβ-substituted Ninhydrin Derivatives:Synthesis and Study on the Development of Latent Fingerprints

作　　者：张岩峰 郭先超 马荣梁 孙振文 耿松 王铭兆 ZHANG Yanfeng;GUO Xianchao;MA Rongliang;SUN Zhenwen;GENG Song;WANG Mingzhao(Department of Criminal Technology,Sichuan Police College,Intelligent Policing Key Laboratory of Sichuan Province,Luzhou 646000,Sichuan,China;Jintang Branch of Chengdu Public Security Bureau,Chengdu 610499,China;Institute of Forensic Science,Ministry of Public Security(MPS)&MPS’Key Laboratory of Trace Science and Technology,Beijing 100038,China;Technology Division of Criminal Investigation Department,Ministry of Public Security,Beijing 100741,China)

机构地区：[1]四川警察学院刑事技术系,智能警务四川省重点实验室,四川泸州646000 [2]四川省成都市金堂县公安局,成都610499 [3]公安部鉴定中心,痕迹科学与技术公安部重点实验室,北京100038 [4]公安部刑事侦查局刑事技术处,北京100741

出　　处：《刑事技术》2024年第2期128-134,共7页Forensic Science and Technology

基　　金：痕迹科学与技术公安部重点实验室开放课题(2020FMKFKT03);刑事检验四川省高校重点实验室开放课题(2021YB03);智能警务四川省重点实验室资助项目(ZNJW2023ZZMS003)。

摘　　要：本文基于傅克酰基化取代反应合成了三种茚三酮类似物:β-甲氧基茚三酮、β-硝基茚三酮、β-甲基茚三酮,比较并研究相同配方下三种β-取代茚三酮在不同纸张上显现汗潜手印的效果,并分别与茚三酮进行比较,分析其优劣。结果显示,三种β-取代茚三酮的显现液基本可显示不同纸张上的新鲜指纹,但β-硝基茚三酮对于陈旧指纹的显现效果较差,且显现液本身为棕褐色,显示出的指纹纹线为黑褐色,故视觉感官上稍劣于其他两者;β-甲氧基茚三酮和β-甲基茚三酮的效果均与茚三酮相当,灵敏度略高于茚三酮,显色后的稳定性高于茚三酮。研究表明,β-位取代基的变化能够改变茚三酮类化合物显现手印的效果,给电子基团的修饰能够提高该类化合物的手印显现性能,化合物本身的荧光性能与实际的指纹显现效果并不直接相关。The synthesis of threeβ-substituted ninhydrin derivatives and their application to the development of latent fi ngerprints on paper surfaces were investigated.Under the same concentration,the effects ofβ-OMe,β-NO_(2),β-Me ninhydrin were compared through latent fingerprint developments on different papers with multiple dimensions,respectively,and their effects were also compared with ninhydrin to analyze the advantages and disadvantages.Threeβ-substituted ninhydrin derivatives could develop fi ngerprints on different papers.The effect ofβ-NO_(2) ninhydrin was slightly inferior to the others as its solution was brown at the same time the displayed fi ngerprint was dark brown;the effect ofβ-OMe,β-Me ninhydrin was equivalent to ninhydrin in many dimensions and the sensitivity was slightly higher than ninhydrin,as well as the stability of Ruhemann’s purple.The modification onβ-position could change the fingerprint development effect of ninhydrin;the substitution of electron-donating groups could improve the fingerprint development effect of ninhydrin;the fluorescence performance of these compounds was not directly related to the visual effect of fi ngerprint display.

关 键 词：手印显现 渗透/半渗透客体 β-取代茚三酮 

分 类 号：DF794.1[政治法律—诉讼法学]