新型荧光纳米显影剂的制备及其在指纹显影方面的应用  

Preparation of new fluorescent nano-developer and its application in latent fingerprint identification

作　　者：王晨 刘帅[1] 陈艳[1] WANG Chen;LIU Shuai;CHEN Yan(Department of Chemistry,Bengbu Medical College,Bengbu 233000,China)

机构地区：[1]蚌埠医学院化学教研室,安徽蚌埠233000

出　　处：《中山大学学报（自然科学版）（中英文）》2022年第5期117-125,共9页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：国家自然科学基金(21603005);国家级大学生创新创业训练计划项目(202010367057);高校优秀青年人才支持计划一般项目(gxyq2021187)。

摘　　要：通过不同配比的三聚氰酸和三聚氰胺的一步聚合作用制备得到新型氮化碳纳米荧光显影剂,并采用粉末喷洒法详细研究了其不同条件下的指纹显影效果。结果表明:该材料光学性能稳定,优于传统方法制备得到的材料;当三聚氰酸与三聚氰胺配比为1∶5时,荧光强度最强,不仅在暗室下能够显现指纹清晰的乳突线和细节特征,在日光下显影效果同样良好,并适用于大部分常见的载客体,此外,该材料还可以在365 nm紫外灯连续照射240 min内保持较为理想的显影效果,甚至可以很好地显现留存20 d的指纹。The new carbon nitride fluorescent developer material can be prepared by the polymerization of cyanuric acid and melamine in different proportions.The powder spraying method was used to study the fingerprint development effect under different conditions in detail.The results show that the optical performance of the resulted sample is stable and strong,which is better than those prepared by traditional methods.Notably,when the raw material ratio is 1∶5,the fluorescence intensity is the strongest.For its property of fingerprint identification,papillary lines and detailed features of fingerprint can be clearly displayed in darkroom and also in daylight,and its ability of fluorescent material is suitable for most common objects.Moreover,a relatively stable development effect of this fluorescent agent was maintained under a continuous irradiation with 365 nm UV lamps for 240 min,and this fluorescent agent can even show the fingerprints left for 20 days.

关 键 词：潜指纹显影 氮化碳 显影剂 

分 类 号：O611.3[理学—无机化学]