Effects of the donor unit on the formation of hybrid layers of donor-acceptor copolymers with silver nanoparticles

0572911 - ÚMCH 2024 RIV CH eng J - Journal Article
Cimrová, Věra - Eom, S. - Pokorná, Veronika - Kang, Y. - Výprachtický, Drahomír
Effects of the donor unit on the formation of hybrid layers of donor-acceptor copolymers with silver nanoparticles.
Nanomaterials. Roč. 13, č. 12 (2023), č. článku 1830. E-ISSN 2079-4991
R&D Projects: GA ČR(CZ) GC20-15498J
Institutional support: RVO:61389013
Keywords : silver nanoparticles * donor-acceptor copolymers * perylenetetracarboxydiimide acceptor units
OECD category: Polymer science
Impact factor: 5.3, year: 2022
Method of publishing: Open access
https://www.mdpi.com/2079-4991/13/12/1830

Donor-acceptor (D-A) copolymers containing perylene-3,4,9,10-tetracarboxydiimide (PDI) electron-acceptor (A) units belonging to n-type semiconductors are of interest due to their many potential applications in photonics, particularly for electron-transporting layers in all-polymeric or perovskite solar cells. Combining D-A copolymers and silver nanoparticles (Ag-NPs) can further improve material properties and device performances. Hybrid layers of D-A copolymers containing PDI units and different electron-donor (D) units (9-(2-ethylhexyl)carbazole or 9,9-dioctylfluorene) with Ag-NPs were prepared electrochemically during the reduction of pristine copolymer layers. The formation of hybrid layers with Ag-NP coverage was monitored by in-situ measurement of absorption spectra. The Ag-NP coverage of up to 41% was higher in hybrid layers made of copolymer with 9-(2-ethylhexyl)carbazole D units than in those made of copolymer with 9,9-dioctylfluorene D units. The pristine and hybrid copolymer layers were characterized by scanning electron microscopy and X-ray photoelectron spectroscopy, which proved the formation of hybrid layers with stable Ag-NPs in the metallic state with average diameters <70 nm. The influence of D units on Ag-NP diameters and coverage was revealed.

Permanent Link: https://hdl.handle.net/11104/0343991