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Citation: CAI Kaiyang, YANG Ruiqin, WANG Yanji, YU Xuejiao, LIU Jianjun. Latent Fingermarks Development with Mercaptosuccinic Acid Modified CdTe Quantum Dots on Various Substrates[J]. Chinese Journal of Applied Chemistry, ;2012, 29(11): 1335-1339. doi: 10.3724/SP.J.1095.2012.00540 shu

Latent Fingermarks Development with Mercaptosuccinic Acid Modified CdTe Quantum Dots on Various Substrates

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a Department of Forensic Science, Chinese People's Public Security University, Beijing 100038, China;
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b College of Science, Beijing University of Chemical Technology, Beijing 100029, China

Corresponding author: YANG Ruiqin,
Received Date: 2 December 2011
Available Online: 1 February 2012
Fund Project: 教育部新世纪优秀人才计划基金资助项目(NCET-10-0083) (NCET-10-0083)北京教育委员会共建项目计划(SYS1004100436) (SYS1004100436)

Prominent fingermarks were obtained within 1~3 seconds after developed by the water-soluble mercaptosuccinic acid(MSA) modified CdTe quantum dots(QDs) with a wide-continuous excitation spectra and a narrow-symmetric emission spectra on various substrates.Latent fingermarks on water-immersed substrate and sticky adhesive tape were developed successfully.High sensitivity was also obtained on the development of latent fingermarks pressed continuously with the same finger.Compared with methyl violet,rhodamine 6G and mercaptoacetic acid(TGA) modified CdTe QDs,the MSA modified CdTe QDs showed the fastest developing speed and the best fingermarks quality.
- mercaptosuccinic acid,
- CdTe quantum dots,
- latent fingermarks
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