title: Synthesis and optophysical properties of dimeric aza-BODIPY dyes with a push-pull benzodipyrrolidone core.
abstract: A series of benzodipyrrolidone-based dimeric aza-BODIPY dyes with a push-pull structure are synthesized. Single crystal X-ray diffraction demonstrates these extended aza-BODIPY dyes are planar. The resulting aza-BODIPY chromophores exhibit intense absorption in the 450-800 nm regions and possess lower-lying LUMO energy levels. Furthermore, the push-pull substituents on aza-BODIPYs core have a positive effect on their optophysical properties.
authors.affiliation: Max-Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany. chen@mpip-mainz.mpg.de muellen@mpip-mainz.mpg.de.
authors.forename: Yafei
authors.initials: Y
authors.lastname: Wang
authors.forename: Long
authors.initials: L
authors.lastname: Chen
authors.forename: Reda M
authors.initials: RM
authors.lastname: El-Shishtawy
authors.forename: Saadullah G
authors.initials: SG
authors.lastname: Aziz
authors.forename: Klaus
authors.initials: K
authors.lastname: Müllen