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Novel fluorescent quater‐ and quinquifurans: Syntheses and photophysical properties
Author(s) -
Kauffman Joel M.,
Moyna Guillermo
Publication year - 2002
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.5570390519
Subject(s) - chemistry , benzoxazole , polystyrene , fluorescence , palladium , furan , photochemistry , polymer chemistry , solubility , catalysis , triptycene , organic chemistry , polymer , physics , quantum mechanics
In the quest for fast fluors for use in waveshifting polystyrene fibers, symmetrical oligofurans were investigated. Furan moieties were coupled by means of the Ullmann Reaction or by palladium‐catalyzed unsym‐metrical coupling; the latter gave higher yields. While the benzoxazole‐terminated quater‐ and quinquifurans we prepared were both stable and fast, exhibiting a green fluorescence and decay times of about 2.4 nsec, they were inferior to other types of fluors in solubility and emission intensity when incorporated into polystyrene.