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Immobilisation of electroactive macrocyclic complexes within titania films


Bernhardt, PV and Kilah, NL and Meacham, AP and Meredith, P and Vogel, R, Immobilisation of electroactive macrocyclic complexes within titania films, Dalton Transactions, 34, (15) pp. 2508-2515. ISSN 1477-9226 (2005) [Refereed Article]

Copyright Statement

Copyright 2005 The Royal Society of Chemistry

DOI: doi:10.1039/b505917h


The 4-carboxyphenyl-appended macrocyclic ligand trans-6,13-dimethyl-6-((4-carboxybenzyl)amino)-1,4,8,11- tetraazacyclotetradecane-6-amine (HL10) has been synthesised and complexed with CoIII. The mononuclear complexes [Co(HL10)(CN)]2+ and [CoL10(OH)]+ have been prepared and the crystal structures of their perchlorate salts are presented, where the ligand is bound in a pentadentate mode in each case while the 4-carboxybenzylsubstituted pendent amine remains free from the metal. The cyano-bridged dinuclear complex [CoL10-μ-NCFe( CN)5]2− was also prepared and chemisorbed on titania-coated ITO conducting glass. The adsorbed complex is electrochemically active and cyclic voltammetry of the modified ITO working electrode in both water and MeCN solution was undertaken with simultaneous optical spectroscopy. This experiment demonstrates that reversible electrochemical oxidation of the FeII centre is coupled with rapid changes in the optical absorbance of the film.

Item Details

Item Type:Refereed Article
Research Division:Chemical Sciences
Research Group:Inorganic chemistry
Research Field:Transition metal chemistry
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the chemical sciences
UTAS Author:Kilah, NL (Dr Nathan Kilah)
ID Code:87083
Year Published:2005
Web of Science® Times Cited:10
Deposited By:Chemistry
Deposited On:2013-11-07
Last Modified:2017-05-25

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