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Abstract
Vinyl-functionalized phenanthroimidazole-based monomers were synthesized and their thermal, optical, photophysical, and electrochemical properties were investigated. The monomers exhibited high thermal stability with 5% weight loss temperatures ranging from 315 to 386 °C. Solid state ionization were found to be comparable (5.56-5.62 eV). The number average molecular weight of the polymerization product of monomer containing substituent at phenyl rings linked to C-2 position of imidazole ring was found to be 213000 Da. The values of activation energy for self-polymerization of monomers varied in the range from 86.6 to 143.8 kJ/mol (estimated by Ozawa method), and from 87.8 to 148.0 kJ/mol (estimated by Kissinger method).
Additional information
Funding
DG acknowledges to the ERDF PostDoc project No. 1.1.1.2/VIAA/1/16/177. This research was also supported by Research Council of Lithuania (grant no TAP LLT-2/2017).