Arsenic(II) sulfide quantum dots prepared by a wet process from its bulk.
Arsenic(II) sulfide nanocrystals were fabricated by a wet process from its bulk through cluster-mediate transformation. The bulk arsenic(II) sulfide can be easily dissolved in ethylenediamine to form a solution-like cluster (As4S4-NH2C2H4NH2)). The cluster can be transformed to nanocrystals assisted by consumption of ethylenediamine in protic polar solvents with mild thermal treatment. The nanocrystals show size-dependent fluorescence ranging from UV to the blue, two photon fluorescence as well as cytotoxic effects on cancer cells.
Wang
Junzhong
J
Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543.
Lin
Ming
M
Zhang
Tianyu
T
Yan
Yongli
Y
Ho
Paul C
PC
Xu
Qing-Hua
QH
Loh
Kian Ping
KP
D001152:Arsenicals / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology; D005029:Ethylenediamines / Q000737:chemistry; D005260:Female; D005347:Fibroblasts / Q000187:drug effects; D006367:HeLa Cells; D006801:Humans; D053758:Nanoparticles / Q000737:chemistry*; D010051:Ovarian Neoplasms / Q000188:drug therapy; D045663:Quantum Dots; D012996:Solutions; D013050:Spectrometry, Fluorescence; D013056:Spectrophotometry, Ultraviolet; D013440:Sulfides / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology
D001152:Arsenicals; D005029:Ethylenediamines; D012996:Solutions; D013440:Sulfides; C045816:arsenic trisulfide; C031234:ethylenediamine