金纳米粒子和聚合物复合体系分子设计与组装过程的计算机模拟

李延春, 李洋

doi:10.7536/PC150169

化学进展 ›› 2015, Vol. 27 ›› Issue (7) :848-852 DOI: 10.7536/PC150169

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金纳米粒子和聚合物复合体系分子设计与组装过程的计算机模拟

李延春, 李洋

作者信息 +

Computer Simulation Study on the Molecular Design and the Self-Assembly Process of Au-Nanoparticle and Polymer Composite System

Li Yanchun, Li Yang

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文章历史 +

摘要

金纳米粒子除了拥有纳米粒子的体积效应、表面效应、量子尺寸效应、宏观量子隧道效应等优异性能之外,还有一些特殊性能,如良好的稳定性、抗菌抑菌功能、表面吸收带效应、荧光效应等。量子化学计算方法提供了从分子水平上探究金团簇的催化和反应活性的影响因素,如金团簇的尺寸、形状、电子状态、活性位点的类型和结构等。分子动力学可以更好地模拟纳米粒子与配体和溶剂的相互作用方式,同时给出热力学和动力学行为。耗散粒子动力学等介观模拟方法则被应用到金纳米粒子和聚合物复合体系自组装过程的研究,并可以给出调控自组装结构的有效方案。以高分子与纳米粒子复合物为研究对象,明晰影响复合物结构和性质的主导因素,探索复合物调控机制,提出决定复合物功能的主控因素,进一步理解高分子与纳米粒子复合物的本质,可以为实验上制备、优化新型高分子与纳米粒子复合物材料提供可靠的理论帮助。

Abstract

Au-nanoparticles have volume effect, surface effect, quantum size effect, macroscopic quantum tunneling effect and other excellent properties. In addition, there are some special properties for Au-nanoparticles, such as good stability, antibacterial function, surface absorption, fluorescence effect belt and so on. Quantum chemistry calculation provides a method to investigate the factors that affect the catalytic and reactive activity of gold clusters at the molecular level, such as the gold cluster size, shape, electronic state, active site and structure, etc. The interaction modes of nanoparticles with ligands and solvent can be better simulated by molecular dynamics, which can also give the behavior of thermodynamic and kinetic. Dissipative particle dynamics mesoscopic simulation method is applied to study the self-assembly process of Au-nanoparticles and polymer composite system, which would be an effective scheme to control the self-assembled structure. To clear the dominant factors influencing the complex structure and properties, to explore the complex regulation mechanism, to propose the main control factors, which is good for the further understanding the nature of Au-nanoparticles and polymer composite system. It is also providing a reliably theoretical help for experiments to prepare and optimize the new kinds of composite materials.

Contents
1 Introduction
1.1 Au-nanoparticles
1.2 Polymers
2 Computer simulation methods
2.1 Quantum chemistry,QC
2.2 Molecular dynamics,MD
2.3 Brownian dynamics,BD
2.4 Dissipative particle dynamics,DPD
3 Assembly of Au-nanoparticles and polymer composites
3.1 Au-nanoparticles and homopolymer
3.2 Au-nanoparticles and copolymer
4 Conclusion

Graphical abstract

关键词

金纳米粒子 / 聚合物 / 自组装 / 计算机模拟

Key words

Au-nanoparticles / polymer / self-assembly / computer simulation

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李延春, 李洋. 金纳米粒子和聚合物复合体系分子设计与组装过程的计算机模拟[J]. 化学进展, 2015, 27(7): 848-852 DOI:10.7536/PC150169

Li Yanchun, Li Yang. Computer Simulation Study on the Molecular Design and the Self-Assembly Process of Au-Nanoparticle and Polymer Composite System[J]. Progress in Chemistry, 2015, 27(7): 848-852 DOI:10.7536/PC150169

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