Theoretical and Experimental Studies of the Optical Properties of Conjoined Gold-Palladium Nanospheres

Logsdail, Andrew ORCID: https://orcid.org/0000-0002-2277-415X, Cookson, Nikki J., Horswell, Sarah L., Wang, Z. W., Li, Z. Y. and Johnston, Roy L. 2010. Theoretical and Experimental Studies of the Optical Properties of Conjoined Gold-Palladium Nanospheres. Journal of Physical Chemistry C 114 (49) , pp. 21247-21251. 10.1021/jp108486a

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Abstract

We identify and report on UV−vis spectral features of AucorePdshell nanoparticles. Chains of conjoined nanospheres are formed with clear core/shell segregation and identified via experimental spectral red shifts of λmax and scanning transmission electron microscopy (STEM) imaging. Theoretical calculations performed using the discrete dipole approximation (DDA) validate our findings. The DDA simulation method is then used to delve further into possible spectroscopic implications of geometric and environmental changes. Structural configurations including extended chains of nanospheres, differing levels of nanosphere conjoinment, and increased Pd shell thickness are investigated, as well as variations of the surrounding dielectric medium.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Cardiff Catalysis Institute (CCI) Chemistry
Publisher:	ACS Publications
ISSN:	1932-7447
Last Modified:	01 Nov 2022 11:35
URI:	https://orca.cardiff.ac.uk/id/eprint/95480

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