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中文摘要：
提出了一种简单高效制备立体型纳米结构的方法.利用强偶极相互作用,CdTe量子点通过层级自组装形成超分支纳米结构.场发射高分辨透射电子显微（HRTEM）照片显示,制备的超分支纳米结构的构建单元即为原始的CdTe量子点,即组装后的结构保留了原始量子点的量子局限特性.该结构形态受熟化时间、环境pH值以及沉淀剂比例的影响.荧光实验发现,该结构良好地保持了原始量子点的线性光学特性.由于其超分支形态与量子局限效应同时存在,因此该种结构在光伏转换和传感等领域有着重要的潜在应用价值.
英文摘要：
We propose a simple and efficient method to build three-dimensional nanostructure. Driven by the strong dipole interaction,CdTe quantum dots can form the hyper-branched nanostructures with layer-by-layer self-assembly process. The HRTEM images show that the prepared hyper-branched nanostructures are polycrystal structures and composed by the original CdTe quantum dots. Thus the quantum confinement effect of original quantum dots is inherited by formed nanostructures. Experimental results indicate that the configurations of nanostructures can be influenced by the curing time,pH value of solution and proportion of precipitation agent. The luminescence experiment shows that the formed hyper-branched nanostructure well keep the linear optical properties of original quantum dots,therefore these nanostructures own the great potential to be used in the field of photovoltaic conversion,sensor and so on.
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