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Photo‐fries rearrangement of fluorene‐based polyarylates
Author(s) -
Lo J.,
Lee S. N.,
Pearce E. M.
Publication year - 1984
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1984.070290104
Subject(s) - fluorene , fries rearrangement , moiety , polymer chemistry , photochemistry , degradation (telecommunications) , materials science , polymer , chemistry , stereochemistry , organic chemistry , catalysis , computer science , telecommunications
The fluorene‐based polyarylates, 9,9‐bis(4‐hydroxyphenyl)fluorene isophthalate (BPF‐I), 9,9‐bis(3,5‐dimethyl‐4‐hydroxyphenyl) fluorene isophthalate (BDMPF‐I), are synthesized. The formation of the o ‐hydroxybenzophenone moiety upon UV irradiation of BPF‐I and BCF‐I is observed in the UV and IR spectra. The degradation of the polymer structure of BDMPF‐I is due to its inability to rearrange into the hydroxybenzophenone structure which functions as an internal UV stabilizer. A mechanism for this degradation is postulated based on the evidence from the IR spectra.