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Novel dithiolene complexes incorporating conjugated electroactive ligands
journal contributionposted on 2008-01-01, 00:00 authored by P Skabara, Cristina Pozo-GonzaloCristina Pozo-Gonzalo, N Miazza, M Laguna, E Cerrada, A Luquin, B Gonzalez, S Coles, M Hursthouse, R Harrington, W Clegg
A series of new metal (M) dithiolene complexes bearing terthiophene (3, 12, M = Ni; 4, M = Pd; 5, 6, M = Au) and 2,5-bis(para-methoxyphenyl)thiophene units (14, M = Ni; 15, 16, M = Au; 17, M = Pd) have been synthesised in 38–99% yield. The electrochemical properties of the materials have been characterised by cyclic voltammetry and UV-vis spectroelectrochemistry. The nickel complexes possess low oxidation potentials (−0.12 to −0.25 V vs Ag/AgCl) due to the electron-rich dithiolene centres and all complexes display ligand-based redox activity. The terthiophene derivatives have been polymerised by electrochemical oxidation to give stable films with, in the case of poly(3), broad absorption characteristics. Charge transfer materials have been isolated from 14 and 16 with conductivities in the range 9 × 10−6 to 7 × 10−8 S cm−1.
Pagination3070 - 3079
PublisherRoyal Society of Chemistry
Publication classificationC1.1 Refereed article in a scholarly journal
absorptionbioelectric phenomenacharge transferchemical modificationchemical oxygen demandcyclic voltammetryderivativeselectrochemical propertieselectronsgold alloysion exchangeligandsmaterials propertiesnickelnickel alloysorganic polymersoxidationpalladiumpalladium compoundspigmentsredox reactionsspectroelectrochemistrythiophenevanadium compoundsvoltammetryScience & TechnologyPhysical SciencesChemistry, Inorganic & NuclearChemistryCRYSTAL-STRUCTURESMETAL-COMPLEXESPOLYMERSUNITSMETALLOPOLYMERSSEXITHIOPHENESPRECURSORS