Novel photoacid generators for cationic photopolymerization

文献情報

出版日 2017-06-29

DOI 10.1039/C7PY00855D

インパクトファクター 5.582

著者

Nicolas Klikovits, Patrick Knaack, Daniel Bomze, Ingo Krossing, Robert Liska

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要旨

Cationic photopolymerization is a powerful method for UV-curing of epoxy, vinyl ether and oxetane monomers. Little attention has been paid to it over the last few decades compared to the corresponding free radical applications due to unsuitable and inefficient photo-acid generators (PAGs) used for photoinitiation. We introduce a novel type of PAG based on the tetrakis(perfluoro-t-butyloxy)aluminate anion. In facile preparations, diphenyliodonium and triarylsulfonium salts were synthesized, followed by characterization of absorbance and thermal stability. Comparative photo-differential scanning calorimetry (photo-DSC) studies with common onium salt PAGs showed the advantageous reactivity of the novel alkoxyaluminate-based cationic photoinitiators. The novel diphenyliodonium PAG was also examined in photosensitization studies for potential use in higher wavelength applications.

掲載誌

Polymer Chemistry

CiteScore: 8.6

自己引用率: 7.3%

年間論文数: 457

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Novel photoacid generators for cationic photopolymerization

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