title: Synthesis and Physical Properties of Strained Doubly Phosphorus-Bridged Biaryls and Viologens.
abstract: New P/N-containing π-electron systems comprising fully planar biaryl arrays are synthesized by multiple radical phosphanylation. The biaryl moiety in these highly strained planar π-systems is rigidified by double P-bridging. The electronic properties of the core biaryl entity are varied by introducing N-donor substituents or by installing N-atoms within the π-system, thereby moving to the viologen core structure. The electrochemical and photophysical properties of these compounds are discussed and compared with those of related systems.
authors.affiliation: Westfälische Wilhelms Universität, Organisch-Chemisches Institut, Corrensstrasse 40, 48149, Münster, Germany.
authors.forename: Tobias W
authors.initials: TW
authors.lastname: Greulich
authors.affiliation: Department of Chemistry, Graduate School of Science and Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo, Chikusa, Nagoya, 464-8602, Japan.
authors.forename: Eriko
authors.initials: E
authors.lastname: Yamaguchi
authors.affiliation: Westfälische Wilhelms Universität, Physikalisch-Chemisches Institut, Corrensstrasse 28/30, 48149, Münster, Germany.
authors.forename: Carsten
authors.initials: C
authors.lastname: Doerenkamp
authors.affiliation: Westfälische Wilhelms Universität, Organisch-Chemisches Institut, Corrensstrasse 40, 48149, Münster, Germany.
authors.forename: Maximilian
authors.initials: M
authors.lastname: Lübbesmeyer
authors.affiliation: Westfälische Wilhelms Universität, Organisch-Chemisches Institut, Corrensstrasse 40, 48149, Münster, Germany.
authors.forename: Constantin G
authors.initials: CG
authors.lastname: Daniliuc
authors.affiliation: Department of Chemistry, Graduate School of Science and Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo, Chikusa, Nagoya, 464-8602, Japan.
authors.forename: Aiko
authors.initials: A
authors.lastname: Fukazawa
authors.affiliation: Westfälische Wilhelms Universität, Physikalisch-Chemisches Institut, Corrensstrasse 28/30, 48149, Münster, Germany.|Instituto de Física em Sao Paulo, Universidade de Sade Sao Paulo, IAv. Trabalhador Saocarlense 400, Sao Carlos, S.P., 13560-590, Brazil.
authors.forename: Hellmut
authors.initials: H
authors.lastname: Eckert
authors.affiliation: Department of Chemistry, Graduate School of Science and Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo, Chikusa, Nagoya, 464-8602, Japan.
authors.forename: Shigehiro
authors.initials: S
authors.lastname: Yamaguchi
authors.affiliation: Westfälische Wilhelms Universität, Organisch-Chemisches Institut, Corrensstrasse 40, 48149, Münster, Germany.
authors.forename: Armido
authors.identifier: http://orcid.org/0000-0002-1706-513X
authors.initials: A
authors.lastname: Studer
keywords: EPR; cyclic voltammetry; dyes/pigments; phosphorous; pi-systems; radical ions