title: Poly-p-hydroquinone Ethers: Isoenergetic Molecular Wires with Length-Invariant Oxidation Potentials and Cation Radical Excitation Energies.
abstract: Typical poly-p-phenylene wires are characterized by strong interchromophoric electronic coupling with redox and optical properties being highly length-dependent. Herein we show that an incorporation of a pair of para-methoxy groups at each p-phenylene unit in poly-p-phenylene wires (i.e., PHEn) changes the nodal structure of HOMO that leads to length-invariant oxidation potentials and cation radical excitation energies. As such, PHEnrepresents a unique class of isoenergetic wires where hole delocalization mainly occurs via dynamic hopping and thus may serve as an efficient medium for long-range charge transfer. Availability of these wires will allow demonstration of long-range electron transfer via incoherent hopping using donor-bridge-acceptor systems with isoenergetic PHEn-based wires as bridges.
authors.affiliation: Department of Chemistry, Marquette University , P.O. Box 1881, Milwaukee, Wisconsin 53201-1881, United States.
authors.forename: Maxim V
authors.identifier: 0000-0002-6171-9524
authors.initials: MV
authors.lastname: Ivanov
authors.affiliation: Department of Chemistry, Marquette University , P.O. Box 1881, Milwaukee, Wisconsin 53201-1881, United States.
authors.forename: Vincent J
authors.initials: VJ
authors.lastname: Chebny
authors.affiliation: Department of Chemistry, Marquette University , P.O. Box 1881, Milwaukee, Wisconsin 53201-1881, United States.
authors.forename: Marat R
authors.identifier: 0000-0002-7559-9666
authors.initials: MR
authors.lastname: Talipov
authors.affiliation: Department of Chemistry, Marquette University , P.O. Box 1881, Milwaukee, Wisconsin 53201-1881, United States.
authors.forename: Rajendra
authors.identifier: 0000-0001-7387-7936
authors.initials: R
authors.lastname: Rathore
mesh_terms: D002412:Cations / Q000737:chemistry; D018360:Crystallography, X-Ray; D004579:Electron Transport; D004987:Ethers / Q000737:chemistry*; D005609:Free Radicals / Q000737:chemistry; D006873:Hydroquinones / Q000737:chemistry*; D008958:Models, Molecular; D010084:Oxidation-Reduction; D011108:Polymers / Q000737:chemistry*; D011789:Quantum Theory
chemical_list: D002412:Cations; D004987:Ethers; D005609:Free Radicals; D006873:Hydroquinones; D011108:Polymers