强手性贵金属-半导体三聚体的制备及其光学机制

项目名称： 强手性贵金属-半导体三聚体的制备及其光学机制

项目编号： No.21471068

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 数理科学和化学

项目作者： 胥传来

作者单位： 江南大学

项目金额： 90万元

中文摘要： 纳米粒子可控自组装表现出与组成和结构相关联的优异光学特性，纳米粒子的相互作用呈现协同放大效应，产生强的光学信号。本项目拟通过纳米粒子可控合成、纳米粒子界面功能化和稳定化修饰。基于分子识别（核酸杂交、抗原-抗体反应及分子电荷作用）纳米材料自组装技术，构筑贵金属纳米粒子与半导体量子点三聚体组装体系，进行动态组装过程研究。研究贵金属纳米粒子与半导体量子点组装体的不同组成结构和光谱学关联及机制，建立光学模型，阐释贵金属纳米粒子与半导体量子点之间的等离子-激子相互作用及能量共振转移对圆二色性的影响效应及机制，构建强圆二色性的贵金属纳米粒子和量子点三聚体光学体系。

中文关键词： 贵金属纳米粒子；量子点；自组装；三聚体；圆二色性

英文摘要： Nanoparticles assemblies showed composition and structure dependent strong optical properties, in which the collective interactions of the nanoparticles exhibited synergistic amplification effect that give rise to strong optical signals. This project will perform nanoparticle controllable synthesis, nanoparticle interface modification for functionalization and stablization. Through molecular recognition (DNA hybridization, antigen-antibody reaction and molecular charge interactions) based nanoparticle self-assembly technology, this project will construct noble nanoparticles and quantum dots trimers assembly system, and investigate the dynamic assembly process. This project will also perform the relationship and mechanism study between optical properties and different constituted structures of nanoparticle trimers. Then, the optical models will be established to demonstrate the effect and mechanism of Plasmon-exciton interaction and the energy resonance transfer with relation to the circular dichroism. Finally, this project will construct noble metal nanoparticles and quantum dots trimer optical system with strong circular dichroism.

英文关键词： Noble Metal Nanoparticles;Quantum Dots;Self-assembly;Trimer;Circular Dichroism