title: Optical and redox properties of ruthenium phthalocyanine complexes tuned with axial ligand substituents.
abstract: The optical and electrochemical properties of the ruthenium phthalocyanine complexes [[(t-Bu)4Pc]Ru(4-Rpy)2], where R = NO2, Me, NH2, and NMe2, are reported. The electron density at the macrocycle may be adjusted using the axial ligand substituents, which have varying electron-donating/withdrawing strengths. Electrochemical data show that the axial pyridine ligand substituents exert significant influence over the phthalocyanine ring-based redox processes. The axial ligands also influence the electronic absorption properties of the complexes with influence also being observed in the electrogenerated oxidized and reduced species.
authors.affiliation: Institute of Nanoscale Technology, University of Technology Sydney, Sydney, NSW 2007, Australia.
authors.forename: Tristan
authors.initials: T
authors.lastname: Rawling
authors.forename: Hong
authors.initials: H
authors.lastname: Xiao
authors.forename: Sang-Tae
authors.initials: ST
authors.lastname: Lee
authors.forename: Stephen B
authors.initials: SB
authors.lastname: Colbran
authors.forename: Andrew M
authors.initials: AM
authors.lastname: McDonagh