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首页> 外文期刊>Journal of Applied Polymer Science >Photochemistry of 2,6-di(4 '-azidobenzylidene)-methylcyclohexanone in polymer matrices
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Photochemistry of 2,6-di(4 '-azidobenzylidene)-methylcyclohexanone in polymer matrices

机译：Photochemistry of 2,6-di(4 '-azidobenzylidene)-methylcyclohexanone in polymer matrices

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摘要

2,6-Di(4'-azidobenzylidene)-methylcyclohexanone (ABC) was one of the most used photoinitiators in negative photoresists industry, rendering insolubility of the resist films at short UV exposure times (several minutes). Although the photodecomposition of aromatic azides is very well established, the peculiarities of the irradiation medium impose specific reaction pathways for arylnitrenes. In this study, photoreactions of arylnitrenes resulted from ABC photolysis were applied in the photoinitiated cross-linking of 1,2-polybutadiene (1,2-PB), under soft monochromatic UV irradiation (365 nm). To elucidate the crosslinking mechanism, studies on a model compound were performed. 3-Methyl-1-butene was chosen to simulate the monomeric unit of 1,2-PB. As a support in photoproducts identifying and with the purpose of a deeper investigation of the ABC photochemistry alone, ABC was photolysed in a rigid matrix of poly(methyl methacrylate). (C) 2017 Wiley Periodicals, Inc.

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