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- Title
Photo‐Deactivation Strategy for Switchable ATRP with the Assistance of Molecular Switches.
- Authors
Zhang, Weidong; Chen, Zhuan; Zhang, Zhengbiao
- Abstract
Light irradiation is an external stimulus, rapidly developed in switchable atom transfer radical polymerization (ATRP) via photo‐activation methods in recent years. Herein, a photo‐deactivation strategy is introduced to regulate ATRP with the assistance of photoswitchable hexaarylbiimidozole (HABI). Under visible light irradiation and in the presence of HABI, ATRP is greatly decelerated or quenched depending on the concentration of HABI. Interestingly, with visible light off, ATRP can proceed smoothly and follow a first‐order kinetics. Moreover, photo‐switchable ATRP alternatively with light off and on is demonstrated. Besides, the mechanism of photo‐deactivation ATRP involving radical quenching is proposed in the presence of HABI.
- Subjects
VISIBLE spectra; MOLECULAR switches; RADICALS (Chemistry); POLYMERIZATION; ATOMS
- Publication
Macromolecular Rapid Communications, 2024, Vol 45, Issue 15, p1
- ISSN
1022-1336
- Publication type
Article
- DOI
10.1002/marc.202400162