Lee, Zhong-Han published the artcileEffect of the Steric Hindrance and Branched Substituents on Visible Phenylamine Oxime Ester Photoinitiators: Photopolymerization Kinetics Investigation through Photo-DSC Experiments, Computed Properties of 15625-89-5, the publication is Photochemistry and Photobiology (2022), 98(4), 773-782, database is CAplus and MEDLINE.
In this work, free radical photopolymerization (FRP) kinetics for series of different phenylamine oxime ester structures (DMA-P, DEA-P, DMA-M, TP-2P, TP-2M and TP-3M) was investigated. Steric hindrance and branched substituents were prepared to realize the corresponding electronic and photopolymerization effects. The photophys., electrochem., thermal properties and radical concentration were investigated by UV-visible spectroscopy, cyclic voltammetry (CV), thermogravimetric anal. (TGA), differential scanning calorimetry (DSC) and ESR (EPR). Furthermore, the structure-reactivity relationships were also studied in detail through photo-DSC experiment We demonstrate that the introduction of alkyl chains and/or numbers of oxime esters affects significantly the photoreactivity. Under the same weight ratio of formulation and irradiated condition, TP-3M containing three oxime esters in its structure and Me group in the periphery exhibits the highest double-bond conversion efficiency. TP-3M-based formulation also shows a wide operation window under different contents and light intensities. Importantly, the photoreactivity of the TP-3M-based system was found to be better than the com. photoinitiator (OXE-01) under LED@405 nm at a low concentration This work could provide some significance to the design of oxime esters with enhanced photoreactivity.
Photochemistry and Photobiology published new progress about 15625-89-5. 15625-89-5 belongs to esters-buliding-blocks, auxiliary class Polymerization Reagents,Crosslinkers, name is Trimethylolpropane triacrylate, and the molecular formula is C15H20O6, Computed Properties of 15625-89-5.
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https://en.wikipedia.org/wiki/Ester,
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