多肽在贵金属纳米粒子制备中的应用

Applications of Peptides in Noble Metal Nanoparticles(NMNPs) Preparation

由于具有与大块固体相迥异的性能,贵金属纳米粒子的制备与应用已经成为当前纳米、材料技术领域研究的热点。由于组成成分较多、包含各种活性基团、序列可调,并且很多多肽可生物降解、生物兼容、具有生物活性和特异性识别性能,多肽在贵金属纳米粒子制备中的应用也越来越受到人们的重视。本文从多肽作为还原剂还原贵金属盐;多肽作为保护剂/调控剂制备不同尺寸/形貌的贵金属纳米粒子;多肽作为引导剂规则排列贵金属纳米粒子;多肽作为贵金属纳米粒子组装的模板以及多肽在贵金属表面的吸附、多肽的自组装和如何获取所需要的多肽序列等几个方面综述了近年来多肽在贵金属纳米粒子制备中的应用。最后简述了利用多肽制备的贵金属纳米粒子在纳米、材料技术领域中的应用,并提出了当前该领域中存在的一些不足及研究展望。

The preparations and applications of noble metal nanoparticles （NMNPs） have attracted much more interest because of remarkably distinct properties compared with bulky metallic solids. Because peptides have many compositions and active groups, and be degradable, biologically active, biocompatible, specific recognizable, could be used in biological and medical fields, scientists have been trying to prepare NMNPs with peptides in the hope of obtaining more functional and adjustable materials. The recent progress in the applications of peptides in NMNPs preparations is summarized from the following aspects in this review： peptides acting as reducing agents to reduce noble metal salt precursors; peptidcs acting as capping/modulating agents to prepare NMNPs with different sizes/morphologies; peptides acting as directors to array NMNPs to regular superstructures; peptides acting as templates to assemble NMNPs to low-dimensional assemblies. In addition, the adsorption of peptides on surfaces of noble metals, the peptides self-assembly and how to obtain desired peptides are also summarized. The applications of NMNPs prepared with peptides in nanometer/material technologies are also introduced briefly, such as acting as catalyst for Stille coupling reaction, magnetic ＆ electrical materials through self-assembled nanowires, and optical materials with specific recognition, label, and detection. Finally, several directions to be studied in future are also prospected, such as the interaction between peptide and NMNPs, the control of size, morphology and composition of NMNPs during synthesis with peptide, the ordered self-assembly of NMNPs regulated with peptides, and the applications in more fields.