A Highly Efficient UV-C Absorber Based on Theoretical and Experimental Studies

作者：Chen Ya Lun; Shih Chien Yi; Lin Hung Sung; Huang Fu Yung^*

来源：Journal of the Chinese Chemical Society, 2017, 64(3): 282-288.

DOI：10.1002/jccs.201600723

• UV-C absorber
• Tinuvin-PS
• Time-dependent density functional theory calculation
• Molecular orbital plot

Based on two published UV absorbing molecules 2-(5-tert-butyl-2-hydroxyl)benzotriazole (Tinuvin-PS) and hydroxybenzophenone (HBP), both having characteristic absorption capability, a refined UV absorber, 2-(3-benzoyl-2-hydroxy-5-tert-butylphenyl)benzotriazole, has been synthesized. This new UV absorber exhibits a wider absorption range and better thermal stability compared to either Tinuvin-PS and HBP and a higher absorption efficiency in the UV-C range. Theoretical studies reveal that the UV-C absorption arises from the electron density transfer from the Tinuvin-PS moiety to the HBP moiety and the enhanced absorption efficiency is ascribed to the presence of the carbonyl's system.

• 出版日期2017-3