Huang Feng-Hua
College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China.
Guang Pu Xue Yu Guang Pu Fen Xi. 2008 Jan;28(1):103-5.
Cuboid-shaped CdS particles were synthesized with sol-gel method by using thiourea as surface modifier and characterized by X-ray diffraction, transmission electron microscopy, infrared absorption spectrum and fluorescence spectrum. The results show that the sulfur atoms in thiourea molecules coordinate with Cd2+ ions on the surface of the nanocrystals. The thiourea-modified CdS particles have a zinc blende crystal structure and good fluorescent characteristics. The cuboid-shaped CdS particles are probably assembled by hydrogen bonding between primary CdS nanocrystals surface-capped with thiourea. The result will promote the researches into molecular self-assembly of nanocrystals and help develop novel luminescence material.
采用溶胶-凝胶法，以硫脲作为表面改性剂合成了长方体状的硫化镉颗粒，并通过X射线衍射、透射电子显微镜、红外吸收光谱和荧光光谱对其进行了表征。结果表明，硫脲分子中的硫原子与纳米晶体表面的Cd2+离子配位。硫脲改性的硫化镉颗粒具有闪锌矿晶体结构和良好的荧光特性。长方体状的硫化镉颗粒可能是由表面被硫脲包覆的初级硫化镉纳米晶体之间通过氢键组装而成。该结果将推动纳米晶体分子自组装的研究，并有助于开发新型发光材料。
