Surface Enhanced Raman Scattering Evidence for Existence of a Critical Concentration for Coil Shrinking in Poly(L-Histidine) Solutions
作者:
G. Xue,
G. Shi,
期刊:
Instrumentation Science & Technology
(Taylor Available online 1994)
卷期:
Volume 22,
issue 2
页码: 179-183
ISSN:1073-9149
年代: 1994
DOI:10.1080/10739149408001186
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The concentration dependence of surface enhanced Raman scattering (SERS) of adsorbed poly-(L-histidine) on surfaces of silver has been investigated. It has been found that the spectral qualities are inversely proportional to the concentrations of solutions applied. Excellent SERS spectral enhancement could be achieved for the sample applied from wt-0.02% solution. This phenomenon was termed as “dilution effect” on SERS spectrum of polymers. The observed phenomena are in accordance with Qian's proposal for the existence of coil shrinkage in dilute solution.
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