Hybrid layers of donor-acceptor copolymers with homogenous silver nanoparticle coverage for photonic applications

0539325 - ÚMCH 2022 RIV CH eng J - Journal Article
Cimrová, Věra - Eom, S. - Pokorná, Veronika - Kang, Y. - Výprachtický, Drahomír
Hybrid layers of donor-acceptor copolymers with homogenous silver nanoparticle coverage for photonic applications.
Polymers. Roč. 13, č. 3 (2021), č. článku 439. E-ISSN 2073-4360
R&D Projects: GA ČR(CZ) GC18-14683J; GA ČR(CZ) GC20-15498J
Institutional support: RVO:61389013
Keywords : hybrid layers * silver nanoparticles * donor-acceptor copolymers
OECD category: Polymer science
Impact factor: 4.967, year: 2021
Method of publishing: Open access
https://www.mdpi.com/2073-4360/13/3/439

Hybrid layers of donor-acceptor (D-A) copolymers containing N,N′-dialkylperylene-3,4,9,10-tetracarboxydiimide electron-acceptor units covered with silver nanoparticles (Ag-NPs) were prepared by electrochemical doping of pristine layers during reduction processes. In situ optical absorption spectra of the layers were recorded during the formation of Ag-NP coverage. The hybrid layers were characterized by absorption spectroscopy, scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and energy dispersive X-ray spectroscopy (EDX). In the absorption spectra of the hybrid layers, a surface plasmon band characteristic of Ag-NPs appeared. Significant improvements in light absorption due to the plasmonic effects of Ag NPs were observed. Stable Ag-NPs with an average diameter of 41–63 nm were formed on the surface, as proven by SEM and XPS. The Ag-NP coverage and size depended on the hybrid layer preparation conditions and on the copolymer composition. The metallic character of the Ag-NPs was proven by XPS. The location in the surface layer was further confirmed by EDX analysis. To the best of our knowledge, this is the first report on such hybrid layers having the potential for a variety of photonic and electronic applications.
Permanent Link: http://hdl.handle.net/11104/0317013