title: Phosphaalkenes in pi-conjugation with acetylenic arenes.
abstract: Phosphaalkene inclusion at the periphery of acetylenic arenes results in decreased band gaps of the title compounds as verified by spectroscopic and electrochemical techniques. The electronic coupling between two 1-phosphahex-1-ene-3,5-diyne units is mediated by all para-substituted arenes and increases from 4b to 4d.
authors.affiliation: Department of Photochemistry and Molecular Science, Angstrom Laboratories, Uppsala University, Box 523, 75120 Uppsala, Sweden.
authors.forename: Xue-Li
authors.initials: XL
authors.lastname: Geng
authors.forename: Qi
authors.initials: Q
authors.lastname: Hu
authors.forename: Bernhard
authors.initials: B
authors.lastname: Schäfer
authors.forename: Sascha
authors.initials: S
authors.lastname: Ott