高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (10): 1488-1490.

• 论文 • 上一篇    下一篇

共振散射光强度与金粒子粒径的关系

蒋治良, 李芳, 李廷盛, 梁宏   

  1. 广西师范大学化学与生命科学学院, 桂林 541004
  • 收稿日期:1999-12-24 出版日期:2000-10-24 发布日期:2000-10-24
  • 通讯作者: 蒋治良(1965年出生),男,研究员,从事分子光谱和纳米材料研究.
  • 基金资助:

    广西自然科学基金(批准号:桂科字11021)资助

The Relationship Between Resonance Scattering Intensity and the Size of Au Particles

JIANG Zhi-Liang, LI Fang, LI Ting-Sheng, LIANG Hong   

  1. College of Chemistry and Life Science, Guangxi Normal University, Guilin 541004, China
  • Received:1999-12-24 Online:2000-10-24 Published:2000-10-24

摘要: 采用柠檬酸钠还原法制备了不同粒径的金粒子,并研究了金粒子的共振散射光谱.结果表明,金粒子在粒径10~95nm范围内呈红色,最大吸收波长在517.8~553.3nm范围内.随着金粒子粒径增大,吸收峰红移.粒径为10~95nm金粒子的最强共振散射峰位于580nm处,此波长处的共振散射光强度3√I与金粒子粒径d成正比.

关键词: 金粒子, 粒径, 共振散射光谱

Abstract: Au particle of the size in the range of 10—189 nm has been prepared by sodium citrate procedure. The resonance scattering spectra of Au particle have been studied. The nanoparticle solutions of the size in the range of 10—95 nm exhibit red in colour. Their maxmum absorption wavelenth are in the range of 517.8—533.3 nm. The absorption peak shifts to the red with the size increasing. The maxmum resonance scattering peak is at 580 nm. The cube root of the intensity at 580 nm is proportional to the size of Au particles.

Key words: Au particle, Size of particle, Resonance scattering spectroscopy

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