title: Tridurylboranes extended by three arylethynyl groups as a new family of boron-based pi-electron systems
abstract: A series of tris(phenylethynylduryl)boranes (R-C(6)H(4)-C&tbd1;C-duryl)(3)B with various substituents R have been prepared as air-stable solids owing to the steric protection of the boron atom by the three bulky duryl groups. These compounds show unique photophysical properties due to the p(pi)-pi conjugation through the p-orbital on the boron atom. In particular, a push-pull type derivative with R = NMe(2) exhibits a significant solvatochromism of fluorescence from blue to orange colors.
authors.affiliation: Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan.
authors.initials: S
authors.lastname: Yamaguchi
authors.initials: T
authors.lastname: Shirasaka
authors.initials: K
authors.lastname: Tamao