title: Fluorescent organic nanoparticles of benzofuran-naphthyridine linked molecules: formation and fluorescence enhancement in aqueous media.
abstract: [structure: see text] Ethynyl-linked benzofuran-naphthyridine compounds show high-yield fluorescence with solvatochromic properties. One of the compounds, ABAN, has successfully formed fluorescent organic nanoparticles (FONs), for which the photophysical properties such as the spectral features and intensity are remarkably different from those at the molecular level (solution) and in bulk material. The results are tentatively rationalized by the FONs inducing coplanarization of the benzofuran-naphthyridine molecule to extend its effective conjugation length and hence increase the oscillator strength.
authors.affiliation: Department of Chemistry, National Taiwan University, Taipei 106, Taiwan.
authors.forename: Yeh-Yang
authors.initials: YY
authors.lastname: Sun
authors.forename: Jen-Hai
authors.initials: JH
authors.lastname: Liao
authors.forename: Jim-Min
authors.initials: JM
authors.lastname: Fang
authors.forename: Pi-Tai
authors.initials: PT
authors.lastname: Chou
authors.forename: Ching-Hsing
authors.initials: CH
authors.lastname: Shen
authors.forename: Chih-Wei
authors.initials: CW
authors.lastname: Hsu
authors.forename: Li-Chyong
authors.initials: LC
authors.lastname: Chen