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Emission Color Tuning with Polymer Molecular Weight for Difluoroboron Dibenzoylmethane‐Polylactide
Author(s) -
Zhang Guoqing,
Kooi Steven E.,
Demas J. N.,
Fraser Cassandra L.
Publication year - 2008
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200702681
Subject(s) - dibenzoylmethane , fluorophore , polymer , materials science , fluorescence , polarity (international relations) , photochemistry , polymer chemistry , organic chemistry , chemistry , composite material , optics , biochemistry , physics , cell
Difluoroboron dibenzoylmethane‐poly(lactic acid) emission is sensitive to the polarity of the surrounding medium. As the polymer molecular weight increases, fluorescence maxima blue‐shift for these dye‐polymer conjugates. A similar shift is noted in their delayed emission spectra. This “green to blue” color change may be attributed to decreasing fluorophore–fluorophore interactions and polarity with increasing polymer molecular weight.