Optical Properties of Gold Nanoparticle Assemblies on a Glass Surface

Abstract : The assemblies of cross-linked gold nanoparticles (AuNP) attract lot of scientific attention due to feasible perspectives of their use for development of scaled contact electrodes. Here, we developed and tested method of solid-state formation of dimers created from small AuNP (~18 nm) cross-linked with 1.9-nonadithiol (NDT) molecules. The morphology of created coating of a glass surface and its optical-polarization properties have been studied in detail by combination of scanning electron microscopy, atomic force microscopy, UV-visible spectroscopy, and modulation-polarization spectroscopy. The modification of localized surface plasmon resonance (LSPR) of single AuNP and their assemblies were studied by measuring of the spectral characteristics of polarization difference at all stages of synthesis. The radiative and nonradiative modes of LSPR have been analyzed in detail at different angles of incidence light. This allowed establishing relation between surface morphology of the coating and its optical properties.
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Nanoscale Research Letters, SpringerOpen, 2017, 12, pp.348. 〈10.1186/s11671-017-2107-8〉
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M.O. Stetsenko, S. P. Rudenko, L. S. Maksimenko, B. K. Serdega, O. Pluchery, et al.. Optical Properties of Gold Nanoparticle Assemblies on a Glass Surface. Nanoscale Research Letters, SpringerOpen, 2017, 12, pp.348. 〈10.1186/s11671-017-2107-8〉. 〈hal-01534721〉

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