Issue 21, 2022

Electron transport through a (terpyridine)ruthenium metallo-surfactant containing a redox-active aminocatechol derivative

Abstract

Aiming to develop a new class of metallosurfactants with unidirectional electron transfer properties, a (terpyridine) ruthenium complex containing a semiquinone derivative L2, namely [RuIII(Lterpy)(L2)Cl]PF6 (1), was synthesized and structurally characterized as a solid and in solution. The electronic and redox behaviour of 1 was studied experimentally as well as by means of DFT methods, and is indicative of significant orbital mixing and overlap between metal and ligands. The complex forms stable Pockels–Langmuir films at the air-water interface and allows for the formation of thin films onto gold electrodes to prepare nanoscale Au|LB 1|Au junctions for current–voltage (I/V) analysis. Complex 1 shows asymmetric electron transfer with a maximum rectification ratio of 32 based on tunnelling through MOs of the aminocatechol derivative.

Graphical abstract: Electron transport through a (terpyridine)ruthenium metallo-surfactant containing a redox-active aminocatechol derivative

Supplementary files

Article information

Article type
Paper
Submitted
27 Mac 2022
Accepted
12 Mei 2022
First published
17 Mei 2022

Dalton Trans., 2022,51, 8425-8436

Author version available

Electron transport through a (terpyridine)ruthenium metallo-surfactant containing a redox-active aminocatechol derivative

S. Amunugama, E. Asempa, R. C. Tripathi, D. Wanniarachchi, H. Baydoun, P. Hoffmann, E. Jakubikova and C. N. Verani, Dalton Trans., 2022, 51, 8425 DOI: 10.1039/D2DT00938B

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