title: 2-(2'-Hydroxyphenyl)benzimidazole and 9,10-phenanthroimidazole chelates and borate complexes: solution- and solid-state emitters.
abstract: The synthesis, structural, and optical properties of a series of luminescent N-alkylated 2-(2'-hydroxyphenyl)benzimidazole (HBI) or N-arylated 9,10-phenanthroimidazole (HPI) borate complexes are described. The optical properties of these complexes as well as their corresponding ligands were evaluated in solution and the solid state. Efficient emission in the blue-green region was obtained with quantum yields up to 91% in CH2Cl2 and 27% in the solid state. These emissions originate from excited state intramolecular proton transfer (ESIPT) for the ligands and from a singlet excited state for the borate complexes.
authors.affiliation: Laboratoire de Chimie Organique et Spectroscopies Avancées (ICPEES-LCOSA), UMR7515 CNRS, École de Chimie, Polymères, Matériaux de Strasbourg (ECPM), 25 rue Becquerel, 67087 Strasbourg, Cedex 02, France, and Laboratoire de Crystallochimie, ICSN - CNRS , Bât. 27-1 avenue de la Terrasse, 91198 Gif-sur-Yvette, Cedex, France.
authors.forename: Karima
authors.initials: K
authors.lastname: Benelhadj
authors.forename: Julien
authors.initials: J
authors.lastname: Massue
authors.forename: Pascal
authors.initials: P
authors.lastname: Retailleau
authors.forename: Gilles
authors.initials: G
authors.lastname: Ulrich
authors.forename: Raymond
authors.initials: R
authors.lastname: Ziessel
mesh_terms: D001562:Benzimidazoles / Q000737:chemistry*; D001881:Borates / Q000737:chemistry*; D008024:Ligands; D049449:Luminescence; D015394:Molecular Structure; D011522:Protons; D012996:Solutions
chemical_list: C585229:2-(2'-hydroxyphenyl)benzimidazole; D001562:Benzimidazoles; D001881:Borates; D008024:Ligands; D011522:Protons; D012996:Solutions