Issue 40, 2018

Observation of current rectification by the new bimetallic iron(iii) hydrophobe [Fe III2(LN4O6)] on Au|LB-molecule|Au devices

Abstract

Targeting the development of stimulus-responsive molecular materials with electronic functionality, we have synthesized and studied the redox and electronic properties of a new bimetallic iron hydrophobe [FeIII2(LN4O6)] (1). The new H6LN4O6 ligand displays bicompartmental topology capable of accomodating two five-coordinate HSFeIII ions bridged by tetraaminobenzene at a close distance of ca. 8 Å. We show that the metal-based reduction processes in (1) proceed sequentially, as observed for electronically coupled metal centers. This species forms a well-defined Pockels-Langmuir film at the air–water interface, with collapse pressure of 32 mN m−1. Langmuir–Blodgett monolayers were deposited on gold substrates and used to investigate current–voltage (IV) measurements. This unprecedented bimetallic hydrophobe [FeIII2(LN4O6)] (1) shows unquestionable molecular rectification and displays a rectification ratio RR between 2 and 15.

Graphical abstract: Observation of current rectification by the new bimetallic iron(iii) hydrophobe [FeIII2(LN4O6)] on Au|LB-molecule|Au devices

Supplementary files

Article information

Article type
Paper
Submitted
02 août 2018
Accepted
06 sept. 2018
First published
10 sept. 2018

Dalton Trans., 2018,47, 14352-14361

Author version available

Observation of current rectification by the new bimetallic iron(III) hydrophobe [FeIII2(LN4O6)] on Au|LB-molecule|Au devices

A. D. K. I. Weeraratne, H. Baydoun, R. Shakya, J. Niklas, L. Xie, G. Mao, S. A. Stoian, O. G. Poluektov and C. N. Verani, Dalton Trans., 2018, 47, 14352 DOI: 10.1039/C8DT03158D

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