Photophysical/Photochemical, Kinetic, and Migration Stability Studies of One-Component Polymerizable Thioxanthone-Based Photoinitiators,Macromolecular Chemistry and Physics

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Photophysical/Photochemical, Kinetic, and Migration Stability Studies of One-Component Polymerizable Thioxanthone-Based Photoinitiators
Macromolecular Chemistry and Physics ( IF 2.5 ) Pub Date : 2021-08-18 , DOI: 10.1002/macp.202100221
Qingqing Wu ₁ , Yongfei Mo ₁ , Yachao Zhang ₁ , Fushao Li ₁ , Mingsen Deng ₁

Affiliation

Herein, N-benzyl-N-(9-oxo-9H-thioxanthen-2-yl)acrylamide (TXNBA) is designed and synthesized as one-component polymerizable photoinitiator (PI). It is investigated in terms of its photophysical/photochemical, kinetic, and migration stability properties by ultraviolet-visible spectrophotometer, Fourier transform infrared spectrometer, and EPR spin trapping experiments. In conjunction with the experimental studies, series of density functional theory calculations are performed and various photophysical and photochemical properties are computationally calculated and visualized. The photolysis and photoinitiation mechanism of TXNBA is clarified. Comparison of the results of 2-isopropylthioxanthone (ITX) system has shown that TXNBA is an efficient one-component polymerizable PI with excellent migration stability. The photoinitiator's migration ratio of TXNBA system to ITX system is 8.52%.

中文翻译：

基于单组分可聚合噻吨酮的光引发剂的光物理/光化学、动力学和迁移稳定性研究

在此，N-苄基-N-(9-oxo-9H-thioxanthen-2-yl)丙烯酰胺 (TXNBA) 被设计和合成为单组分可聚合光引发剂 (PI)。通过紫外-可见分光光度计、傅里叶变换红外光谱仪和 EPR 自旋捕获实验对其光物理/光化学、动力学和迁移稳定性进行了研究。结合实验研究，进行了一系列密度泛函理论计算，并通过计算计算和可视化了各种光物理和光化学特性。阐明了TXNBA的光解和光引发机理。2-异丙基噻吨酮 (ITX) 体系的结果比较表明，TXNBA 是一种高效的单组分可聚合 PI，具有优异的迁移稳定性。光引发剂'

更新日期：2021-10-22

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