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Effect of solvent to fingerprint detection by photoluminescent CdSe/PAMAM nanocomposites

  • Yu J. Jin
  • , Yun Jun Luo
  • , Yuan Feng Wang
  • , Sun Hui
  • , Hao Nan Zhang
  • , Di Jin
  • Beijing Technology and Business University
  • China University of Political Science and Law

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Uniform and well-dispersed photoluminescent semiconductor CdSe(Cadmium selenium) QDs(Quantum dots) were in-situ prepared by taking G4.0-NH2 PAMAM(polyamidoamine) dendrimers as inner templates in water and methanol respectively. The prepared solutions containing photoluminescent semiconductor CdSe QDs were utilized for detection of unfumed oil fingerprints on tinfoil. The results show that unfumed latent fingerprints treated with prepared CdSe/PAMAM nanocomposites both displayed yellow emission and the latent fingerprints were detected clearly, while treated with CdSe/PAMAM composites in water manifested stronger emission compared with those treated with CdSe/PAMAM composites in methanol; Also, the veins of fingerprints treated with CdSe/PAMAM nanocomposites in methanol became slim because of the dissolution of methanol to oil components in fingerprints.

Original languageEnglish
Title of host publicationAdvances in Material Science, Mechanical Engineering and Manufacturing
Pages319-322
Number of pages4
DOIs
Publication statusPublished - 2013
Event2013 3rd International Conference on Machinery, Materials Science and Engineering Applications, MMSE 2013 - Wuhan, Hubei, China
Duration: 20 Jun 201321 Jun 2013

Publication series

NameAdvanced Materials Research
Volume744
ISSN (Print)1022-6680

Conference

Conference2013 3rd International Conference on Machinery, Materials Science and Engineering Applications, MMSE 2013
Country/TerritoryChina
CityWuhan, Hubei
Period20/06/1321/06/13

Keywords

  • Cadmium selenium
  • Fingerprints
  • PAMAM dendrimers
  • Photoluminescence
  • Quantum dots

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