title: Self-assembly of charged Bodipy dyes to form Cassettes that display intracomplex electronic energy transfer and accrete into liquid crystals.
abstract: Red- and blue-absorbing boron dipyrromethene dyes, bearing opposite electronic charges, associate in solution to form a 1:2 complex having a stability constant of ca. 10(17) M(-2). The complex can be dismantled by addition of a large excess of tetra-N-butylammonium cations. The same complex displays liquid crystalline properties on heating from rt to above 150 °C, as characterized by various experimental techniques. Highly efficient electronic energy transfer from the red to the blue dye occurs in both the initial complex and the subsequent mesomorphic state.
authors.affiliation: Laboratoire de Chimie Organique et Spectroscopies Avancées (LCOSA), Ecole Européenne de Chimie, Polymères et Matériaux, LMSPC, UMR 7515 associé au CNRS, 25 rue Becquerel, 67087 Strasbourg Cedex 02, France.
authors.forename: Jean-Hubert
authors.initials: JH
authors.lastname: Olivier
authors.forename: Joaquín
authors.initials: J
authors.lastname: Barberá
authors.forename: Effat
authors.initials: E
authors.lastname: Bahaidarah
authors.forename: Anthony
authors.initials: A
authors.lastname: Harriman
authors.forename: Raymond
authors.initials: R
authors.lastname: Ziessel