Cover Image, Volume 58, Issue 20

On page 2914, Yung-Chung Chen and co-workers synthesize a series of visible light benzophenone derivatives (BPs) incorporated various electron-donating arylamine groups and investigate their roles as photoinitiating systems for free radical photopolymerization. The synthesized BPs display better optical and thermal properties as compared to the reference benzophenone compound. In addition, the best radical concentration, photolysis properties, and photoreactivity are achieved when triethylamine is added. (DOI: 10.1002/pol.20200437).