Synthesis of new polyazines by 1,4 photochemical or anionic polymerization of 1,2-diaza-1,3-butadienes |
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Authors: | Orazio A. Attanasi,Maurizio D&rsquo Auria,Paolino Filippone,Rachele Pucciariello |
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Affiliation: | a Istituto di Chimica Organica, Università degli Studi di Urbino “Carlo Bo”, Via I Maggetti 24, 61029 Urbino, Italy b Dipartimento di Chimica, Università della Basilicata, Via N. Sauro 85, 85100 Potenza, Italy |
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Abstract: | Photochemical and anionic polymerizations of 1,2-diaza-1,3-butadienes are described. Photochemical polymerization was smoothly performed by irradiation of some 1-aminocarbonyl-1,2-diaza-1,3-butadienes with high pressure mercury arc (λ = 300 nm) in the presence of allyltributylstannane. Molecular weights (Mw) in the range 14.6-559 × 102 g/mol were obtained. The TGA curve revealed a first weight loss starting at about 200 °C of some 85%, and a second starting at about 300 °C. The DSC showed the glass transition (Tg) at about −34 °C. Anionic polymerization was performed by treatment of some 1-alkoxycarbonyl-1,2-diaza-1,3-butadienes with n-butyllithium. Molecular weights (Mw) in the range 8.44-242 × 102 g/mol were obtained. |
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Keywords: | 1,2-Diaza-1,3-butadiene Photochemical polymerization Anionic polymerization Polyazines Thermal behaviour |
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