A photoswitchable organocatalyst controls trimethylene carbonate and δ-valerolactone copolymerization

• 来源期刊: 科学通报（英文版）
• 年，卷（期）: 2018,（22）
• 页码范围: 1460-1461
• 页数: 2页
• 语种: 英文

摘要

Switchable catalysts can be reversibly altered to produce two (or more) states displaying orthogonal activities.The use of compounds containing a "switchable" unit in ring opening polymerization (ROP) of cyclic esters and ethers has been an attractive area of research due to the biosourced and biodegradable nature of the polymers produced and enhanced control of the polymer structure.Such systems for ROP have been reported using various stimuli such as temperature [1],redox [2-6] or chemical reagents [7,8],electrodes [9],and,recently,light [10].