Poly-p-hydroquinone Ethers: Isoenergetic Molecular Wires with Length-Invariant Oxidation Potentials and Cation Radical Excitation Energies

Authors

Maxim Vadimovich Ivanov, Marquette University
Vincent J. Chebny, Marquette University
Marat R. Talipov, Marquette UniversityFollow
Rajendra Rathore, Marquette UniversityFollow

Document Type

Article

Language

eng

Publication Date

3-10-2017

Publisher

American Chemical Society

Source Publication

Journal of the American Chemical Society

Source ISSN

0002-7863

Original Item ID

DOI: 10.1021/jacs.7b01226

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., PHE_n) changes the nodal structure of HOMO that leads to length-invariant oxidation potentials and cation radical excitation energies. As such, PHE_n represents 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 PHE_n-based wires as bridges.

Comments

Accepted version. Journal of the American Chemical Society, Vol 139, No. 12 (March 10, 2017): 434-4337. DOI. © 2017 American Chemical Society. Used with permission.

Recommended Citation

Ivanov, Maxim Vadimovich; Chebny, Vincent J.; Talipov, Marat R.; and Rathore, Rajendra, "Poly-p-hydroquinone Ethers: Isoenergetic Molecular Wires with Length-Invariant Oxidation Potentials and Cation Radical Excitation Energies" (2017). Chemistry Faculty Research and Publications. 884.
https://epublications.marquette.edu/chem_fac/884