The design of new plasmonic materials is essential for continued progress in light manipulation at nanometer length scales<i>. </i>Often, multimetallic nanoparticles exhibit superior catalytic, mechanical, or corrosion-resistant behavior compared to their unary constituent counterparts. Despite these advantages, designing multimetallic plasmonic materials remains challenging because, except for Au, Ag, and Al, most metallic elements exhibit poor plasmonic behavior. This talk describes a strategy for manipulating the plasmon resonances of noble metal nanoparticles by post-transition metal alloying. It will discuss how the metallic properties of post-transition metals can be imparted onto the noble metals, enabling tunable higher energy plasmonic resonance that maintain high extinction coefficients and can penetrate into the ultraviolet. Importantly, theoretical analysis suggests that post-transition metal alloying with Bi, Ga, and In could enable analogous tunable plasmon resonances. Consequently, post-transition metal alloying can provide a general strategy for realizing a new and diverse class of tunable plasmonic materials.

Plasmon manipulation using post-transition metals

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ACS Fall 2022

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.