Assembly and composite of CdTe nanocrystals and cationic copolymers

作者：Yang, N.; Wang, X.; Chen, D.; Zhong, A.^*

来源：Plastics Rubber and Composites, 2011, 40(1): 11-16.

DOI：10.1179/174328911X12940139029167

• CdTe nanocrystals
• Cationic copolymers
• Fluorescence
• Multilayer films
• Electrostatic self-assembly
• Composite

CdTe nanocrystals have been synthesised with thioglycolic acid as a stabiliser in the aqueous phase. The fluorescence multilayer films of CdTe nanocrystals and cationic copolymers were prepared by layer by layer electrostatic self-assembly. The multilayer films were characterised using fluorescence spectra, X-ray photoelectron spectroscopy and atomic force microscopy. The fluorescence intensity of multilayer films was enhanced with the increase in the content of 2-trimethylammonium ethyl methacrylate chloride in the cationic copolymers. At the same time, a red shift of the corresponding fluorescence emission peak of the multilayer films was suggestive of the increment of the electrostatic force. The surface morphology of the CdTe/cationic polyacrylamide multilayer films was observed by atomic force microscopy. X-ray photoelectron spectroscopy provided evidence for the presence of CdTe nanocrystals in the multilayer films. A laser diffraction grain size analyser revealed that the size of CdTe nanocrystals increased with the addition of cationic copolymers.

• 出版日期2011-2
• 单位四川大学