title: Suppression of Photocyclization: Stabilization of an Aggregation-Induced Tetraaryldistyrylbenzene Emitter.
abstract: The synthesis of 2,3,5,6-tetrakis(2,6-difluorophenyl)di(styryl)benzene by using a conventional synthetic sequence, including Diels-Alder and Horner reactions is reported. The target is an effective aggregation-induced emitter. It is photostable with respect to electrocyclization, due to the presence of the fluorine substituents. This compound undergoes photochemical trans/cis isomerization of its styryl double bonds.
authors.affiliation: Organisch-Chemisches Institut, Ruprecht-Karls-Universität, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany.
authors.forename: Jan
authors.initials: J
authors.lastname: Freudenberg
authors.affiliation: Organisch-Chemisches Institut, Ruprecht-Karls-Universität, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany.
authors.forename: Frank
authors.initials: F
authors.lastname: Rominger
authors.affiliation: Organisch-Chemisches Institut, Ruprecht-Karls-Universität, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany. uwe.bunz@oci.uni-heidelberg.de.
authors.forename: Uwe H F
authors.initials: UH
authors.lastname: Bunz
keywords: aggregation-induced emission; distyrylbenzene; electrocyclization; fluorescence; photochemistry