Plasmon‐Resonance‐Enhanced Absorption and Circular Dichroism

Abstract

Colloidal Ag nanoparticles coated with L-glutathione attached to bimane chromophores were studied by absorption, circular dichroism (CD), and fluorescence spectroscopies. The absorption and CD spectra were resonantly enhanced by Ag surface plasmons. The wavelength and particle-size dependence of the enhancement indicated that an electromagnetic “antenna” effect is in action. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2008/z800231_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.