Electrochemistry of Tetrathiafulvalene Ligands Assembled on the Surface of Gold Nanoparticles

0564697 - ÚFCH JH 2023 RIV CH eng J - Journal Article
Janoušek, J. - Rybáček, J. - Buděšínský, M. - Pospíšil, Lubomír - Stará, I. G. - Starý, I.
Electrochemistry of Tetrathiafulvalene Ligands Assembled on the Surface of Gold Nanoparticles.
Molecules. Roč. 27, č. 21 (2022), č. článku 7639. E-ISSN 1420-3049
R&D Projects: GA ČR(CZ) GX20-03691X
EU Projects: European Commission(XE) 213382 - FUNMOL
Institutional support: RVO:61388955
Keywords : gold nanoparticles * tetrathiafulvalene * synthesis * tem * spectroscopy * AC voltammetry
OECD category: Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)
Impact factor: 4.6, year: 2022
Method of publishing: Open access

The synthesis of a tetrathiafulvalene (TTF) derivative, S-[4-({4-[(2,2 '-bi-1,3-dithiol-4-ylmethoxy)methyl] phenyl}ethynyl)phenyl] ethanethioate, suitable for the modification of gold nanoparticles (AuNPs), is described in this article. The TTF ligand was self-assembled on the AuNP surface through ligand exchange, starting from dodecanethiol-stabilized AuNPs. The resulting modified AuNPs were characterized by TEM, UV-Vis spectroscopy, and electrochemistry. The most suitable electrochemical method was the phase-sensitive AC voltammetry at very low frequencies of the sine-wave perturbation. The results indicate a diminishing electronic communication between the two equivalent redox centers of TTF and also intermolecular donor-acceptor interactions manifested by an additional oxidation wave upon attachment of the ligand to AuNPs.
Permanent Link: https://hdl.handle.net/11104/0336336