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Plasmon‐Resonance‐Enhanced Absorption and Circular Dichroism
Author(s) -
Lieberman Itai,
Shemer Gabriel,
Fried Tcipi,
Kosower Edward M.,
Markovich Gil
Publication year - 2008
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200800231
Subject(s) - circular dichroism , surface plasmon resonance , absorption (acoustics) , plasmon , chromophore , magnetic circular dichroism , nanoparticle , fluorescence , chemistry , wavelength , localized surface plasmon , materials science , spectral line , photochemistry , optoelectronics , optics , crystallography , nanotechnology , physics , astronomy
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.