title: Synthesis of twist-twist pi-conjugated di-sec-alkylstilbenes and stilbene polymers.
abstract: Twist-twist pi-conjugated (TTPC) pi systems promise unique properties with their 90 degrees twist angles. Di-sec-alkyl substituted stilbenes, 5, were prepared by low-valent titanium coupling of phenyl ketones, 4. Long alkyl chains stopped the coupling reaction. Stilbenes 5 were shown to be approximately 90% TTPC. Inserting TTPC units into poly(p-phenylene) polymers created highly fluorescent, soluble, TTPC pi systems with weak electronic segmentation for organic light emitting diode (OLED) studies.
authors.affiliation: Department of Chemistry, Bowman-Oddy Laboratories, University of Toledo, Toledo, Ohio 43606, USA. jgano@frii.com
authors.forename: James E
authors.initials: JE
authors.lastname: Gano
authors.forename: D J
authors.initials: DJ
authors.lastname: Osborn
authors.forename: Nagendra
authors.initials: N
authors.lastname: Kodali
authors.forename: Padmanabhan
authors.initials: P
authors.lastname: Sekher
authors.forename: Min
authors.initials: M
authors.lastname: Liu
authors.forename: Eddie D
authors.initials: ED
authors.lastname: Luzik