Synthesis of Soluble Main‐Chain Poly(Quinolines)

Economopoulos, Solon P.; Andreopoulou, Aikaterini K.; Gregoriou, Vasilis G.; Kallitsis, Joannis K.

doi:10.1080/10601320600739662

Cited by 3 publications

(3 citation statements)

References 42 publications

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“…The materials containing N-heterocyclic moieties-such as quinoline moiety-have been investigated for their special properties [16,17]. In the nitrogen heterocylic compounds series, quinoline is an aromatic nitrogen compound with a benzene ring in its structure.…”

Section: Introductionmentioning

confidence: 99%

Novel quinoline-based polyurethane elastomers. The effect of the hard segment structure in properties enhancement

Oprea¹

2011

J Polym Res

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Polyurethane elastomers incorporating a quinoline moiety along their polymeric backbones and aliphatic, aromatic or heterocyclic crosslinkers have been synthesized and characterized. For this, NCO-terminated urethane oligomers were prepared from poly(butylene adipate) diol and methylene diphenyl diisocyanate and were subsequently chain extended with 2,4-quinolinediol and different crosslinkers. This study reports the influence of the different crosslinker chemical structures and the hard segment molar ratio on the thermal and dynamic mechanical thermal properties, as well as on the mechanical properties of these elastomers. The fluorescence spectra of polyurethane elastomers were determined at an excitation wavelength of 290 nm. The different chemical structures of the crosslinkers determine the hard segment cohesion and reduce the mobility of the soft phase, having an important effect on thermal stability and on the mechanical properties of the polyurethane films. Thus the incorporation of aromatic crosslinkers results in polyurethanes with lower elongation and stress at break. The highest mechanical properties were obtained for polyurethanes crosslinked with aliphatic crosslinkers.

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Section: Introductionmentioning

confidence: 99%

Novel quinoline-based polyurethane elastomers. The effect of the hard segment structure in properties enhancement

Oprea¹

2011

J Polym Res

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“…In the present work, a maiden attempt has been made to incorporate phenolic tetrasubstituted imidazole and tetrasubstituted quinoline into PBZ framework. The tetrasubstituted imidazole was synthesized through Debus‐Radziszewski imidazole synthesis method, and phenolic tetrasubstituted quinoline was synthesized through Friedlander quinoline synthesis, and their structure was confirmed through FTIR, 1 HNMR, and MASS spectral analysis. The synthesized phenolic compounds were incorporated into conventional PBZ during curing process to obtain copolymer networks having tetrasubstituted imidazole and tetrasubstituted quinolines.…”

Section: Introductionmentioning

confidence: 99%

“…5,26 In the present work, a maiden attempt has been made to incorporate phenolic tetrasubstituted imidazole and tetrasubstituted quinoline into PBZ framework. The tetrasubstituted imidazole was synthesized through Debus-Radziszewski imidazole synthesis [27][28][29] method, and phenolic tetrasubstituted quinoline was synthesized through Friedlander quinoline synthesis [30][31][32] , and their structure was confirmed through FTIR, 1 HNMR, and MASS spectral analysis.…”

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confidence: 99%

Optical, electrochemical, and thermal behavior of polybenzoxazine copolymers incorporated with tetraphenylimidazole and diphenylquinoline

Arumugam

Kesava

Alagar³

et al. 2017

Polymers for Advanced Techs

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Two new polybenzoxazine copolymers were synthesized by polymerizing conventional benzoxazine monomer with varying weight percentage of tetraphenylimidazole and diphenylquinoline.The tetrasubstituted imidazole was synthesized through Debus-Radziszewski imidazole synthesis method, and quinoline derivative was synthesized through Friedlander quinoline synthesis, and their structure was confirmed through FTIR, 1 HNMR, and MASS spectral analysis. New polybenzoxazine copolymers were synthesized by polymerizing conventional benzoxazine monomer with varying weight percentage of (10, 20, and 30%) of phenolic tetraphenylimidazole and diphenylquinoline. The polybenzoxazines cocured with 10, 20, and 30 wt% of imidazole derivative showed a band gap of 2.27, 2.08, and 2.2 eV, respectively, and the quinoline derivative incorporated at 10, 20, and 30 wt% in to polybenzoxazines exhibited a band gap of 2.26, 2.3, and 2.03 eV, respectively. The polybenzoxazines cocured with phenolic imidazoles and quinolines have high glass transition and thermal degradation stability in addition to significant improvement in optical and electrochemical properties than that of conventional bisphenol-based polybenzoxazines.

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