The preparation of CdTe nanoparticles and CdTe nanoparticle-labelled microspheres for biological applications.
Different sizes of CdTe semiconductor nanoparticles were prepared in aqueous solution. These nanoparticles exhibit narrow fluorescence with full width at half-maximum (FWHM) of 35-45 nm that spans the visible spectrum, and they also have high PL quantum yield with high resistance to photodegradation. In addition, CdTe quantum dot (QD)-labelled microspheres, comprising polystyrene (PS) cores and CdTe/polyelectrolyte (PE) shells, were also prepared by the layer-by-layer technique in this paper. The optical properties of the CdTe nanoparticles and CdTe-labelled microspheres were investigated by UV-Visible absorption and luminescence spectroscopy, and fluorescence microscopy was employed for microscopic identification behaviour of the luminescent microspheres.
Wang
Xinyan
X
Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012, People's Republic of China.
Ma
Qiang
Q
Li
Bing
B
Li
Yabing
Y
Su
Xingguang
X
D000818:Animals; D000906:Antibodies / Q000032:analysis / Q000378:metabolism*; D019187:Cadmium Compounds; D004573:Electrolytes / Q000737:chemistry; D016650:Fluorescein-5-isothiocyanate / Q000737:chemistry; D007074:Immunoglobulin G / Q000737:chemistry / Q000378:metabolism; D049449:Luminescence; D008856:Microscopy, Fluorescence; D008863:Microspheres; D053758:Nanoparticles; D036103:Nanotechnology / Q000379:methods*; D055095:Optics and Photonics; D011137:Polystyrenes / Q000737:chemistry; D045663:Quantum Dots; D011817:Rabbits; D012666:Semiconductors; D013056:Spectrophotometry, Ultraviolet
D000906:Antibodies; D019187:Cadmium Compounds; D004573:Electrolytes; D007074:Immunoglobulin G; D011137:Polystyrenes; D016650:Fluorescein-5-isothiocyanate