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

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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

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Publication details

The article was received on 02 Aug 2018, accepted on 06 Sep 2018 and first published on 10 Sep 2018


Article type: Paper
DOI: 10.1039/C8DT03158D
Citation: Dalton Trans., 2018, Advance Article
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    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, Advance Article , DOI: 10.1039/C8DT03158D

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