Aryliodonium Ylides as Novel and Efficient Additives for Radical Chemistry: Example in Camphorquinone (CQ)/Amine Based Photoinitiating Systems

Clicks: 275
ID: 4658
1970
Diaryliodonium salts are well-established compounds in free radical chemistry and are already used as photoinitiators (free radical or cationic polymerization), but the presence of counter anions is a strong drawback. Indeed, a counter anion is always required (e.g., SbF6−) leading to potential toxicity issues or release of HF. In the present paper, counter anion-free and fluoride-free aryliodonium salts are proposed, that is, aryliodonium ylides (AY) are studied here as new and efficient additives for radical chemistry and an example is provided for the camphorquinone (CQ)/amine based photoinitiating systems (PISs) for the polymerization of thick (1.4 mm) and thin (20–13 µm) methacrylates under air and blue light irradiation. The newly proposed PISs, for example, CQ/amine/AY, presented excellent polymerization performances and good bleaching properties were obtained after polymerization. Real-time Fourier transform infrared spectroscopy (RT-FTIR) was used to monitor the photopolymerization profiles. The chemical mechanisms involved were investigated using electron spin resonance (ESR).
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Authors Julie Kirschner;Julien Paillard;Mariem Bouzrati-Zerelli;Jean-Michel Becht;Joachim E. Klee;Saloua Chelli;Sami Lakhdar;Jacques Lalevée;Kirschner, Julie;Paillard, Julien;Bouzrati-Zerelli, Mariem;Becht, Jean-Michel;Klee, Joachim E.;Chelli, Saloua;Lakhdar, Sami;Lalevée, Jacques and
Journal molecules
Year 1970
DOI 10.3390/molecules24162913
URL
Keywords Keywords not found

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