53624-74-1Relevant academic research and scientific papers
Methyl Benzoylformate Derivative Norrish Type I Photoinitiators for Deep-Layer Photocuring under Near-UV or Visible LED
He, Xianglong,Gao, Yanjing,Nie, Jun,Sun, Fang
, p. 3854 - 3864 (2021/05/07)
We designed and prepared a series of methyl benzoylformate (MBF) derivatives Norrish type I photoinitiators (MBFs) for light-emitting diode (LED)-induced photopolymerization through computer simulation. The potential photolysis mechanism of MBFs under LED at 405 nm was explored by steady-state photolysis, nuclear magnetic resonance, and electron spin resonance. The as-synthesized photoinitiator dimethyl 1,4-dibenzoylformate (DM-BD-F) can efficiently initiate free radical photopolymerization of acrylate monomers under LED irradiation at 405 nm. Moreover, we predicted well the photoinitiating capability of MBFs through the cleavage exothermy (ΔH) calculated by triplet bond dissociation energy (BDE) and triplet energy (ET). Significantly, based on the weak absorption of MBFs at 405 nm, MBFs were successfully applied to deep-layer photocuring and the curing depth reached 6.5 cm after the irradiation of LED at 405 nm for 30 s. This research provides a new idea and efficient strategy for the molecular design of photoinitiators for deep-layer photocuring.
Paraphthaloyl formate type photoinitiator suitable for UV-LED deep photopolymerization and preparation method thereof
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Paragraph 0012; 0029-0032, (2021/06/13)
The invention discloses a terephthaloyl formate type photoinitiator suitable for deep photopolymerization of an ultraviolet light-emitting diode (UV-LED), relates to the field of photosensitive macromolecules, and aims to solve the problems that an existi
