Plasmonic Response of Ag- and Au-Infiltrated Cross-Linked Lysozyme Crystals

Muskens, Otto L. and England, Matt W. and Danos, Lefteris and Li, Mei and Mann, Stephen (2013) Plasmonic Response of Ag- and Au-Infiltrated Cross-Linked Lysozyme Crystals. Advanced Functional Materials, 23 (3). pp. 281-290. ISSN 1616-301X

Full text not available from this repository.


Metal-infiltrated protein crystals form a novel class of bio-nanomaterials of great interest for applications in biomedicine, chemistry, and optoelectronics. As yet, very little is known about the internal structure of these materials and the interconnectivity of the metallic network. Here, the optical response of individual Au- and Ag-infiltrated cross-linked lysozyme crystals is investigated using angle- and polarization-dependent spectroscopy. The measurements unequivocally show that metallic inclusions formed inside the nanoporous solvent channels do not connect into continuous nanowires, but rather consist of ensembles of isolated spheroidal nanoclusters with aspect ratios as high as a value of four, and which exhibit a pronounced plasmonic response that is isotropic on a macroscopic length scale. Fluorescence measurement in the visible range show a strong contribution from the protein host, which is quenched by the Au inclusions, and a weaker contribution attributed to the molecule-like emission from small Au-clusters.

Item Type:
Journal Article
Journal or Publication Title:
Advanced Functional Materials
ID Code:
Deposited By:
Deposited On:
11 Mar 2013 16:30
Last Modified:
21 Nov 2022 23:25