Abstract
Reversible addition-fragmentation chain transfer (RAFT) is considered to be one of most famous reversible deactivation radical polymerization protocols. Benefiting from its living or controlled polymerization process, complex polymeric architectures with controlled molecular weight, low dispersity, as well as various functionality have been constructed, which could be applied in wide fields, including materials, biology, and electrology. Under the continuous research improvement, main achievements have focused on the development of new RAFT techniques, containing fancy initiation methods (e.g., photo, metal, enzyme, redox and acid), sulfur-free RAFT system and their applications in many fields. This review summarizes the current advances in major bright spot of novel RAFT techniques as well as their potential applications in the optoelectronic field, especially in the past a few years.
Highlights
Macromolecules with high molecular weight have many advantages in chemical and physical properties over traditional small molecular materials
Kinetic researches demonstrate the maximum number of living chains and the high polymerization polymerization rate would be achieved in a low concentration of initiators [39,40,41]
Thermal initiator is preferentially used for Reversible addition-fragmentation chain transfer (RAFT) polymerization system, such thermal initiator is preferentially used for RAFT polymerization system, such as azodiisobutyronitrile as azodiisobutyronitrile (AIBN) [42,43,44], 2,2′‐azobis‐(2,4‐dimethylvaleronitrile) (ABVN) [45], or (AIBN) [42,43,44], 2,20 -azobis-(2,4-dimethylvaleronitrile) (ABVN) [45], or benzoyl peroxide (BPO) [46]
Summary
Macromolecules with high molecular weight have many advantages in chemical and physical properties over traditional small molecular materials. Over hundreds of reviews have been published involving in RAFT polymerization, covering a tremendous amount of polymer synthesis and applications, in terms of architectures (block, star, hyperbranched, cross-linked) [25,26,27,28,29], surface-grafted (inorganic nanocomposites, 2D graphene) [30,31,32] and functionalities (stimuli-responsive, biodegradable) [33,34,35,36] In these studies, optoelectronic functional materials by RAFT polymerization have been widely investigated for their wide application prospect. The optical and electronic applications of functional polymers by RAFT technology are summarized in second part
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