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Macrocyclic cobalt(III) complexes as precursors for metal-polythiophene hybrid materials


Bernhardt, PV and Kilah, NL, Macrocyclic cobalt(III) complexes as precursors for metal-polythiophene hybrid materials, Polyhedron, 26, (29) pp. 392-399. ISSN 0277-5387 (2007) [Refereed Article]

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Copyright 2013 Elsevier Ltd.

DOI: doi:10.1016/j.poly.2006.07.001


Athiophene-functionalised macrocyclic ligand trans-6,13-dimethyl-6-((thiophen-3-ylmethyl)amino)-1,4,8,11-tetraazacyclotetradecane- 13-amine (L1) has been prepared and complexed with CoIII. The ligand L1 binds as a pentadentate in the crystallographically characterised complexes [CoL1(OAc)](ClO4)2 and [CoL1Cl]Cl2. Electro-copolymerisation of [CoL1Cl]Cl2 with 3,4-ethylenedioxythiophene (EDOT) in a 1:2 ratio on a preformed poly-3,4-ethylenedioxythiophene (PEDOT) film resulted in metal–polymer hybrid films of high quality, consistency and uniformity in appearance. The copolymerised films were characterised by XPS indicating a 1:11 ratio of incorporation of complex to EDOT. Electrochemistry of the Co-PEDOT film (cast on an indium-doped tin oxide working electrode) in water revealed a CoIII/II redox couple at a potential ca. -600 mV (vs Ag/AgCl) which is similar to that seen in solution for the monomeric aqua complex [CoL1(OH2)]3+.

Item Details

Item Type:Refereed Article
Keywords:Macrocycle; Conducting polymer; Electrochemistry; Cobalt
Research Division:Chemical Sciences
Research Group:Inorganic chemistry
Research Field:Inorganic green 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:87090
Year Published:2007
Web of Science® Times Cited:8
Deposited By:Chemistry
Deposited On:2013-11-07
Last Modified:2014-04-16

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