title: Quadrupolar benzobisthiazole-cored arylamines as highly efficient two-photon absorbing fluorophores.
abstract: A computer-aided design of novel D-π-A-π-D styrylamines containing five isomeric benzobisthiazole moieties as the electron-accepting core has revealed the linear centrosymmetric benzo[1,2-d:4,5-d']bisthiazole as the most promising building block for engineering chromophores displaying high two-photon absorption (TPA) in the near-IR region, as also confirmed experimentally. The ease of synthesis of quadrupolar derivatives thereof, combined with extraordinarly high TPA action cross sections (δTPAΦf > 1500 GM), makes these heteroaromatic systems particularly attractive as diagnostic agents in 3D fluorescence imaging.
authors.affiliation: Institute of Chemistry, Technical University of Berlin , Strasse des 17. Juni 135, D-10623 Berlin, Germany.
authors.forename: Peter
authors.initials: P
authors.lastname: Hrobárik
authors.forename: Veronika
authors.initials: V
authors.lastname: Hrobáriková
authors.forename: Vladislav
authors.initials: V
authors.lastname: Semak
authors.forename: Peter
authors.initials: P
authors.lastname: Kasák
authors.forename: Erik
authors.initials: E
authors.lastname: Rakovský
authors.forename: Ioannis
authors.initials: I
authors.lastname: Polyzos
authors.forename: Mihalis
authors.initials: M
authors.lastname: Fakis
authors.forename: Peter
authors.initials: P
authors.lastname: Persephonis