Share Email Print
cover

Proceedings Paper

The mechanism of electrostatic interaction between biological molecules and nanometal colloid on near-infrared surface-enhanced Raman scattering
Author(s): Haiying Zhao; Xiaoming Dou
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

This paper reports effects of electrostatic interaction between amino acid and gold colloid on the intensity of surface-enhanced raman scattering (SERS). Near-infrared (NIR) excited SERS has been measured for lysine (Lys) on gold colloid at pH 10.8 and 12.0 where its ε-amino group is ionized and both the α- and ε-amino groups are neutralized, respectively. Note that the SERS intensity changes dramatically with pH. This result suggests that the electrostatic interaction between the positive charge of the ε-NH3+ group and the negative charge of the gold surface is one of the most important factors that determine the intensities of the SERS signals.

Paper Details

Date Published: 18 January 2005
PDF: 6 pages
Proc. SPIE 5630, Optics in Health Care and Biomedical Optics: Diagnostics and Treatment II, (18 January 2005); doi: 10.1117/12.575721
Show Author Affiliations
Haiying Zhao, Shanghai Jiaotong Univ. (China)
Xiaoming Dou, Shanghai Jiaotong Univ. (China)


Published in SPIE Proceedings Vol. 5630:
Optics in Health Care and Biomedical Optics: Diagnostics and Treatment II
Britton Chance; Mingzhe Chen; Arthur E. T. Chiou; Qingming Luo, Editor(s)

© SPIE. Terms of Use
Back to Top