Near-infrared-light-induced decomposition of Rhodamine B triggered by localized surface plasmon at gold square dimers with well-defined separation distance
Source abstract
Abstract
Localized surface plasmon-induced photoreactions at metal nanostructures have become central research topics in biology, catalysis, and analytical chemistry. In particular, the decomposition of organic pollutants is a popular topic. Rhodamine B is useful in the dye industry and biology; however, it is harmful to humans and the environment. In this study, we investigated the decomposition of the Rhodamine B molecule with a structurally well-defined array of gold square dimers. The array of gold square dimers was fabricated by electron beam lithography, which provided a homogenous well-defined reaction field. Continuous Raman spectral measurements using a near-infrared laser clearly showed that while the Rhodamine B molecules were stable in the absence of the gold square dimers, they were decomposed under near-infrared-light irradiation.
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Research context
OpenAlex topics: Gold and Silver Nanoparticles Synthesis and Applications · Nanocluster Synthesis and Applications · Copper-based nanomaterials and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Chemistry, School of Science, Tokyo Institute of Technology 1 , 2-12-1 W4-10 Ookayama, Meguro-ku, Tokyo 152-8551, Japan
JST 2 , Presto 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
Research Center for Magnetic and Spintronic Materials, National Institute for Materials Science 3 , Tsukuba 305-0047, Japan
International Center for Materials Nanoarchitectonics, National Institute for Materials Science 4 , Tsukuba, Ibaraki 305-0044, Japan
Funding
Research Foundation for the Electro Technology of Chubu · Tokyo Institute of Technology · Ministry of Education, Culture, Sports, Science and Technology · Precursory Research for Embryonic Science and Technology
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