Oxidative and colloidal kinetics of size controlled copper structures through surface plasmon regulated examinations for broadband absorbance

Abstract

Abstract Out of all the candidate plasmonic metals, copper has noteworthy optical characteristics and is also economically favourable for use. However, the stability of plasmonic copper nanomaterials against the loss of the plasmonic property is a setback. The present work is on the synthesis of oxidation-stable copper micro/nanoparticles (CuMps/NPs) at ambient conditions with chosen precursors, antioxidizing agents, polymeric capping agents and chelating ligands. The Surface Plasmon Response (SPR) response of the synthesized Cu structures and their morphological analyses are studied. The refined XRD data were subjected to a detailed structural investigation over fundamental aspects such as crystallite sizes, distortion and dislocation densities. We present herein micro/nanostructures of oxidation-stable plasmonic Cu. The validation of the aggregation and oxidation stabilities of the different synthesized samples make them a worthy choice for multiple plasmonic applications, along with showing the synthesis protocols as viable approaches for achieving such structures with a markedly increased shelf life.