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- Title
A Highly Efficient UV-C Absorber Based on Theoretical and Experimental Studies.
- Authors
Chen, Ya‐Lun; Shih, Chien‐Yi; Lin, Hung‐Sung; Huang, Fu‐Yung
- Abstract
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 π system.
- Subjects
TIME-dependent density functional theory; MOLECULAR orbitals; ULTRAVIOLET radiation; HYDROXYBENZOPHENONES; THERMAL stability
- Publication
Journal of the Chinese Chemical Society, 2017, Vol 64, Issue 3, p282
- ISSN
0009-4536
- Publication type
Article
- DOI
10.1002/jccs.201600723