纳米结构硫化镉半导体材料的合理合成、结构调控与性能研究

项目名称： 纳米结构硫化镉半导体材料的合理合成、结构调控与性能研究

项目编号： No.20801037

项目类型： 青年科学基金项目

立项/批准年度： 2009

项目学科： 电工技术

项目作者： 林之恩

作者单位： 四川大学

项目金额： 18万元

中文摘要： 纳米结构硫属化物半导体材料是当前无机材料领域研究的一个热点。本项目研究采用水热和溶剂热方法，探索纳米结构硫属簇的晶化条件及它们在不同有机配体或有机胺作用下自组装过程。以不同构型中性联咪唑有机配体为桥连单元，将17核硫化镉和4核硫化镉纳米簇分别连接形成一维链状和带状结构；以带负电荷的四咪唑硼酸盐为桥连单元，将17核硫化镉纳米簇连接形成蜂窝层状结构；以4,4'-联吡啶为桥连配体，将7核的硫化锌纳米簇桥连形成一个具有螺旋链状结构的硫属簇基半导体材料；在4,4'-联吡啶和咪唑为桥连配体，将硫化锌链状结构桥分别连形成二维蜂窝层状结构和(4,4)网格结构化合物。此外，探索了双配体策略和模板法在构筑单手性配位聚合物及纳米孔洞材料中的应用。对获得的化合物的晶体结构、化学组成、热稳定性、离子交换、禁带宽度、磁性、以及荧光性能等进行研究。作为材料化学、无机合成化学、结构化学等相关学科的交叉领域，该研究项目为新型晶态半导体材料及微孔材料的开发提供一种新思路。

中文关键词： 半导体材料；硫化物；纳米结构；有机配体；自组装

英文摘要： Nanostructured chalcogenide semiconductor materials are of current interest in the field of inorganic materials. This project adopts hydrothermal and solvothermal methods and explores crystallization conditions of nanostructured chalcogenide clusters and their self-assembly process in the presence of different organic ligands or amines. By using neutral bisimidazole molecules with different configurations as bridging ligands, 17- and 4-nuclear cadmium sulfide clusters are connected to form 1D chain-like and belt-like structures. By using negatively charged tetrakis(imidazolyl)borate anions as bridging ligands, 17-nuclear cadmium sulfide nanoclusters are connected to form a honeycomb-like layered structure. By using 4,4 '- bipyridine as bridging ligand, the 8-nuclear zinc sulfide clusters are connected to form a helical chain-like structure. By using 4,4 '- bipyridine and imidazole as bridging ligands, zinc sulfide chains are connected to form two-dimensional structures with honeycomb and (4,4) grid networks. In addition, dual-ligand strategy and template method are investigated to prepare homochiral coordination polymers and nanoporous materials. The crystal structure, chemical composition, thermal stability, ion exchange, band gap, magnetic and fluorescent properties of as-synthesized compounds have been studied. As an interdisciplinary research of materials chemistry, inorganic synthetic chemistry and structural chemistry, this project provides a new way for the development of novel crystalline semiconducting and microporous materials.

英文关键词： Semiconducting materials; Sulfide; Nanostructure; Organic ligand; Self-assembly