Synthesis and characterization of oxime-esters derivative for free radical photoinitiators
발표자
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초록
내용
In the past few decades, photoinitiator play an essential role for photopolymerization and photocuring for use in a variety of applications, such as dental industry, 3D printing and microelectronics. Among the several photoinitiator, oxime esters consisted of N-OR bond have been considered as the efficient materials. For oxime esters, N-O bond of oxime esters is cleavage to produce active free radical in high yield. Already, two oxime esters derivatives, such as OXE-01 and OXE-02, is commercially used in color filter resist to cure the pigments. However, to further extend the application of oxime ester initiators, efforts to control of absorption spectrum should be attempted by designing new materials. Herein, we synthesize the benzophenone based oxime-esters for free radical photoinitiators. The chemical structure of synthesized oxime-esters is analyzed by 1H-NMR, GC-Mass and FT-IR. The optical properties is investigated by UV-vis absorption.