Application of photoluminescent CdS/PAMAM nanocomposites in fingerprint detection

被引：102

作者：

Jin, Yu-Juan ^{[1
]}

Luo, Yun-Jun ^{[1
]}

Li, Guo-Ping ^{[1
]}

Li, Jie ^{[1
]}

Wang, Yuan-Feng ^{[2
]}

Yang, Rui-Qin ^{[2
]}

Lu, Wen-Ting ^{[1
]}

机构：

[1] Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China

[2] Chinese Peoples Republ Secur Univ, Dept Forens Sci, Beijing 100083, Peoples R China

来源：

FORENSIC SCIENCE INTERNATIONAL | 2008年 / 179卷 / 01期

关键词：

forensic science; fingerprints; photoluminescence; semiconductor quantum dots; cadmium sulfide; dendrimers;

D O I：

10.1016/j.forsciint.2008.04.010

中图分类号：

DF [法律]; D9 [法律]; R [医药、卫生];

学科分类号：

0301 ; 10 ;

摘要：

Uniform and well-dispersed photoluminescent semiconductor CdS (cadmium sulfide) QDs (quantum dots) were in situ prepared inside Generation 4.0-NH2 PAMAM (polyamidoamine) dendrimers in methanol, methanol and water mixed solutions of volume ratio 1:9, respectively. The prepared solutions containing photoluminescent semiconductor CdS QDs were utilized for detection of cyanoacrylate ester fumed fingerprints on tinfoil. The results show that fumed latent fingerprints treated with prepared CdS/PAMAM nanocomposites in methanol, 1:9 methanol:water mixed solutions emit pale yellow-green and orange luminescence respectively under ultraviolet excitation of 365 nm from an UV LED. Fumed fingerprints were successfully detected with good resolving rate and the mechanism was studied in detail. (C) 2008 Elsevier Ireland Ltd. All rights reserved.

引用

页码：34 / 38

页数：5

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