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shaped gold and silver nanoparticles

Frontiers of Materials Science 2011年第1期5卷 1-24页

作者： Yugang SUN Changhua AN Center for Nanoscale Materials Argonne National Laboratory 9700 Cass Avenue Argonne IL 60439 USA State Key Laboratory of Heavy Oil Processing College of Chemistry and Chemical Engineering China University of Petroleum Qingdao 266555 China

Advance in the synthesis of shaped nanoparticles made of gold and silver is reviewed in this article. This review starts with a new angle by analyzing the relationship between the geometrical symmetry of a nanoparticle shape and its internal crystalline structures. According to the relationship, the nanoparticles with well-defined shapes are classified into three categories： nanoparticles with single crystallinity, nanoparticles with angular twins, and nanoparticles with parallel twins. Discussion and analysis on the classical methods for the synthesis of shaped nanoparticles in each category are also included and personal perspectives on the future research directions in the synthesis of shaped metal nanoparticles are briefly sum marized. This review is expected to provide a guideline in designing the strategy for the synthesis of shaped nanoparticles and analyzing the corresponding growth mechanism.

关键词： shaped nanoparticles geometric symmetry internal crystalline structure multiple twins gold silver

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A Simple Approach to Control the Growth of Non-spherical Gold nanoparticles

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Chinese Chemical Letters 2003年第11期14卷 1163-1166页

作者： Hong YUAN Ru Xiu CAI Dai Wen PANG College of Chemistry and Molecular Sciences Wuhan UniversityWuhan 430072

A simple method to prepare the non-spherical gold particles was developed. The result solution included trigonal, truncated trigonal, hexagonal layers, and a pseudo-pentagonal shaped gold nanocrystals. The key factor is to control the relative rates of nucleation and cluster growth in this method. These attributes make seeding growth method as a useful tool in the fabrication of colloidal metal materials. A longitudinal plasmon resonance of 866 nm was observed, which is in the near-IR spectral regions (600-1000 nm). The excellent optical properties as near-IR labels are used to develop highly sensitive analysis method.

关键词： Controlled synthesis shaped nanoparticles gold.

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