Visible Light‐Regulated Ring‐Opening Polymerization of Lactones by Employing Indigo as a Photoacid Catalyst

Author:

Sun Pan1,Li Zixuan1,Zhang Xun2,Liao Yun1,Liao Saihu13ORCID

Affiliation:

1. Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University) College of Chemistry Fuzhou University Fuzhou 350108 China

2. Department State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Lingling Lu Shanghai 200032 China

3. State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China

Abstract

AbstractThe development of visible light‐regulated polymerizations for precision synthesis of polymers has drawn considerable attention in the past years. In this study, an ancient dye, indigo, is successfully identified as a new and efficient photoacid catalyst, which can readily promote the ring‐opening polymerization of lactones under visible light irradiation in a well‐controlled manner, affording the desired polyester products with predictable molecular weights and narrow dispersity. The enhanced acidity of indigos by excitation is crucial to the H‐bonding activation of the lactone monomers. Chain extension and block copolymer synthesis are also demonstrated with this method.

Funder

National Natural Science Foundation of China

Beijing National Laboratory for Molecular Sciences

Publisher

Wiley

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