title: A strap strategy for construction of an excited-state intramolecular proton transfer (ESIPT) system with dual fluorescence.
abstract: An amine-embedded flexible alkyl strap has been incorporated into an emissive boryl-substituted dithienylpyrrole skeleton as a new entity of excited-state intramolecular proton transfer (ESIPT) chromophores. The π-electron system shows a dual emission, which covers a wide range of the visible region depending on the solvent polarity. The incorporation of the aminoalkyl strap as well as the terminal boryl groups efficiently stabilize the zwitterionic excited-state species resulting from the ESIPT even in an aqueous medium.
authors.affiliation: Institute of Transformative Bio-molecules (WPI-ITbM) and Department of Chemistry, Graduate School of Science, Nagoya University, Furo, Chikusa, Nagoya 464-8602 (Japan).
authors.forename: Naoya
authors.initials: N
authors.lastname: Suzuki
authors.forename: Aiko
authors.initials: A
authors.lastname: Fukazawa
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Nagura
authors.forename: Shohei
authors.initials: S
authors.lastname: Saito
authors.forename: Hirotaka
authors.initials: H
authors.lastname: Kitoh-Nishioka
authors.forename: Daisuke
authors.initials: D
authors.lastname: Yokogawa
authors.forename: Stephan
authors.initials: S
authors.lastname: Irle
authors.forename: Shigehiro
authors.initials: S
authors.lastname: Yamaguchi
mesh_terms: D008958:Models, Molecular; D011522:Protons; D013050:Spectrometry, Fluorescence
chemical_list: D011522:Protons
keywords: ESIPT; boron; fluorescence; hydrogen bonds; π conjugation