ISSN:
1436-2449
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Summary Poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) containing pendant mesogenic units separated from the polymer main-chain through spacers of three to ten methylene units were synthesized and characterized. The synthetic pathway used for the chemical modification of PPO involved the radical bromination of its methyl groups followed by phase transfer catalyzed esterification of the resulting bromobenzyl groups with potassium ω-(4-oxybiphenyl)alkanoates and potassium ω-(4-methoxy-4′-oxybiphenyl)alkanoates. Only the resulting polymers containing ten methylene units as spacer and 4,4′-methoxybiphenyl as mesogen present thermotropic liquid crystalline mesomorphism.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00255221
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