Fluorescent organic nanoparticles of benzofuran-naphthyridine linked molecules: formation and fluorescence enhancement in aqueous media.
[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.
Sun
Yeh-Yang
YY
Department of Chemistry, National Taiwan University, Taipei 106, Taiwan.
Liao
Jen-Hai
JH
Fang
Jim-Min
JM
Chou
Pi-Tai
PT
Shen
Ching-Hsing
CH
Hsu
Chih-Wei
CW
Chen
Li-Chyong
LC