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RESEARCH ARTICLE
Contents Vol 70(5)

In Situ Spectroelectrochemical Investigations of RuII Complexes with Bispyrazolyl Methane Triarylamine Ligands

Carol Hua A , Brendan F. Abrahams B , Floriana Tuna C , David Collison C and Deanna M. D’Alessandro A D
+ Author Affiliations
- Author Affiliations

A School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia.

B School of Chemistry, The University of Melbourne, Melbourne, Vic. 3010, Australia.

C School of Chemistry, The University of Manchester, Manchester, M13 9PL, UK.

D Corresponding author. Email: deanna.dalessandro@sydney.edu.au

Australian Journal of Chemistry 70(5) 546-555 https://doi.org/10.1071/CH16555
Submitted: 30 September 2016  Accepted: 15 December 2016   Published: 1 February 2017

Abstract

The synthesis and characterization of two triarylamine ligands, 4-(di(1H-pyrazol-1-yl)methyl)-N-(4-(di(1H-pyrazol-1-yl)methyl)phenyl)-N-phenylaniline (TPA-2bpm) and tris(4-(di(1H-pyrazol-1-yl)methyl)phenyl)amine (TPA-3bpm), containing the bispyrazolylmethane moiety and its RuII terpyridine complexes are presented. The redox properties of the ligands and RuII complexes are explored in detail through cyclic and square-wave voltammetry in addition to in situ UV-vis-near infrared, electron paramagnetic resonance, and fluorescence spectroelectrochemistry. It was demonstrated that the triarylamine radical cation was able to be generated, and further, TPA-2bpm underwent an electrochemically induced dimerization process.


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