1. Self-Accelerating Click Reaction for Cyclic Polymer.
- Author
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Peng Sun, Jiqiang Chen, Jian'an Liu, and Ke Zhang
- Subjects
- *
CHEMICAL reactions , *CYCLIC compounds , *POLYMERIZATION , *INTERMOLECULAR interactions , *CHEMICAL kinetics - Abstract
As the most straightforward synthetic strategy for cyclic polymers in theory, the traditional homodifunctional bimolecular ring-closure methods showed limited success for preparing pure cyclic polymers in practice even after several decades of development. A breakthrough was achieved in this paper to develop a successful homodifunctional bimolecular ring-closure method using a self-accelerating double strain-promoted azide-alkyne click reaction as the intermolecular and subsequent intramolecular coupling reactions. Because of the self-accelerating property of coupling reaction, this novel approach eliminated the usage of equimolar quantities between telechelic polymers and small molecule linkers, which was the prerequisite of traditional homodifunctional bimolecular ring-closure methods for pure cyclic polymers. More importantly, this approach could use an excess amount of small linkers to increase the intermolecular coupling reaction rate, further resulting in a significantly enhanced preparation efficiency of cyclic polymers. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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