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Synthesis and reactions of polymers with photoactive terminal groups—4. the use of oxocarbenium polymerization for the synthesis of poly(α-methylstyrene) with N-acyl dibenz[b,f]azepine terminal units

✍ Scribed by Yusuf Yagci; Metin Hayri Acar; Anthony Ledwith

Publisher: Elsevier Science
Year: 1992
Tongue: English
Weight: 221 KB
Volume: 28
Category: Article
ISSN: 0014-3057
DOI: 10.1016/0014-3057(92)90073-b

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✦ Synopsis

N-chlorocarbonyl dibenz[b,f]

azepine in conjunction with AgSbF6 initiated the cationic polymerization of c(-methylstyrene in methylene chloride. Polymer samples obtained this way contained terminal dibenzazepine units. Chain extension occurred upon irradiating these polymers with u.v. in benzene solution containing benzophenone or benzil, via cyclobutane formation.

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Synthesis and reactions of polymers with photoactive terminal groups—3. The use of radical promoted cationic polymerization for the synthesis of poly(n-butyl vinylether) with n-acyl dibenz(b, f)azepine terminal units

✍ Yusuf Yagci; Wolfram Schnabel; Anthony Ledwith 📂 Article 📅 1987 🏛 Elsevier Science 🌐 English ⚖ 252 KB

The free radical promoted cationic polymerization of n-butyl vinyl-ether (BVE) was achieved by the thermal decompositon of N-[4,4-azobis-(4-cyanopentanoyl)]-bisdibenz(b, f)azepine (ADBA) in the presence of diphenyliodonium hexafluorophosphate (Ph2I+PF6) or silver hexafluorophosphate (AgPF6). Polymer