Effects of the grafting on the fluorescence properties of CdTe nanocrystals.
In this paper, we systematically investigated the influence of graft reagents having an amino or a carboxyl terminus with different chain lengths on the fluorescence properties of water-soluble thioglycolic acid-stabilized CdTe nanocrystals (TGA-CdTe). Strong enhancement effects of the grafting on the fluorescence intensity of TGA-CdTe were observed. The experiment results demonstrated that short-chain-length grafting can increase the fluorescence intensity of CdTe nanocrystals (NCs) better than long-chain-length grafting, and the grafting did not influence the emission wavelength of the CdTe NCs. The fluorescence intensity of the carboxyl-grafted TGA-CdTe was more stable than that of the amino-grafted TGA-CdTe at wide pH ranges (pH 5.1-10.0).
Mei
Fang
F
Department of Chemistry, Nankai University, Tianjin 300071, People's Republic of China.
He
Xi-Wen
XW
Li
Wen-You
WY
Zhang
Yu-Kui
YK
D002104:Cadmium / Q000737:chemistry*; D005456:Fluorescent Dyes / Q000138:chemical synthesis* / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D053768:Metal Nanoparticles / Q000737:chemistry; D015394:Molecular Structure; D053758:Nanoparticles / Q000737:chemistry*; D013691:Tellurium / Q000737:chemistry*; D013864:Thioglycolates / Q000737:chemistry
D005456:Fluorescent Dyes; D013864:Thioglycolates; D002104:Cadmium; D013691:Tellurium