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Synthesis and polymerization of 6-(alkyloxyphenyl)carbonyl substituted spirobenzopyran

✍ Scribed by Yoon-Ki Choi; Eunkyoung Kim; Sam-Rok Keum

Book ID
104260128
Publisher
Elsevier Science
Year
1998
Tongue
French
Weight
222 KB
Volume
39
Category
Article
ISSN
0040-4039

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✦ Synopsis

6-(Alkyloxyphenyl)carbonyl substituted spirobenzopyran (COSP) was synthesized from 6-(hydroxyphenylcarbonyl)substituted salicylaldehyde and indoline, followed by alkylhydroxylation with 6-chloro-l-hexanol. Resulting COSP was modified to a methacryloyl substituted COSP derivative, which was polymerized with styrene (ST) and butylmethacrylate (BMA) to give a terpolymer of COSP-ST-BMA (PCOSP). COSP monomers and PCOSP were thermally more stable than 6nitrospimbenzopyran. Fast photochromic coloration was observed from a COSP doped polymer or PCOSP film upon irradiation with a light of 340 nm.

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