Application of photoluminescent CdS/PAMAM nanocomposites in fingerprint detection.
Uniform and well-dispersed photoluminescent semiconductor CdS (cadmium sulfide) QDs (quantum dots) were in situ prepared inside Generation 4.0-NH(2) 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.
Jin
Yu-Juan
YJ
School of Material Science and Engineering, Beijing Institute of Technology, No. 5 South Street Zhongguancun, Haidian District, Beijing 100081, China.
Luo
Yun-Jun
YJ
Li
Guo-Ping
GP
Li
Jie
J
Wang
Yuan-Feng
YF
Yang
Rui-Qin
RQ
Lu
Wen-Ting
WT
D000328:Adult; D001672:Biocompatible Materials; D019187:Cadmium Compounds; D003487:Cyanoacrylates; D050091:Dendrimers; D003878:Dermatoglyphics; D004952:Esters; D005554:Forensic Medicine / Q000379:methods*; D006801:Humans; D008163:Luminescent Measurements; D000432:Methanol; D008875:Middle Aged; D053761:Nanocomposites; D010781:Photography; D011073:Polyamines; D012997:Solvents; D013440:Sulfides
D001672:Biocompatible Materials; D019187:Cadmium Compounds; D003487:Cyanoacrylates; D050091:Dendrimers; D004952:Esters; C104700:PAMAM Starburst; D011073:Polyamines; D012997:Solvents; D013440:Sulfides; C034939:cadmium sulfide; D000432:Methanol