Thomas R. Gordon and Raymond E. Schaak* Department of Chemistry, The Pennsylvania State University, University Park PA 16801 DMR-‐0820404 (Penn State MRSEC, IRG4)
In soluEon, gold (Au) nanoparEcles incorporate indium (In) at elevated temperatures to form Au-‐In and AuIn2 alloys. SelecEve oxidaEon of the indium in the alloys then occurs, resulEng in the formaEon of indium oxide (In2O3). The In2O3 separates from the Au, forming a hybrid Au-‐In2O3 nanoparEcle. Au parEcles absorb visible light while In2O3 parEcles absorb near infrared light, resulEng in a single parEcle with two disEnct opEcal (plasmonic) absorpEons.