Synthesis and photophysical properties of polyphenylquinoxalines with thiophene and benzothiophene units in side chainsстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:New bis(alpha-diketones) with thiophene and benzothiophene moieties were synthesized. A series of new polyphenylquinoxalines containing these moieties in side chains was prepared via polycondensation of these diketones with different aromatic tetramines. The polymers are soluble in a variety of organic solvents, and their solutions form transparent films having a tensile strength of sigma = 80-100 MPa and an elongation at break of epsilon = 5-12%. The polymers exhibit fluorescence in solution in trifluoroacetic acid and in films with a maximum at 430-570 and 460-480 nm. The 10% mass loss temperature in air ranges within 440-490 degrees C.