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Crosslink‐Enhanced Emission Effect on Luminescence in Polymers: Advances and Perspectives
Author(s) -
Tao Songyuan,
Zhu Shoujun,
Feng Tanglue,
Zheng Chengyu,
Yang Bai
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201916591
Subject(s) - luminescence , luminous efficacy , polymer , materials science , luminous flux , aggregation induced emission , radiative transfer , chemical physics , nanotechnology , photochemistry , light emission , optoelectronics , fluorescence , chemistry , physics , optics , light source , layer (electronics) , composite material
Abstract The crosslink‐enhanced emission effect was first proposed to explore the strong luminescence of nonconjugated polymer dots possessing only either non‐emissive or weakly emissive sub‐luminophores. Interesting phenomena in recent research indicate such enhancement caused by extensive crosslinking appears in diverse luminescent polymers with sub‐luminophores (electron‐rich heteroatomic moieties) or luminophores (conjugated π domains). This enhancement can promote the emission from nonluminous to luminous, from weakly luminous to strongly luminous, and even convert the pathway of radiative transitions. The concept of the crosslink‐enhanced emission effect should be updated and extended to an in‐depth spatial effect, such as electron overlap and energy splitting in confined domains by effective crosslinking, more than initial immobilization. This Minireview outlines the development of the crosslink‐enhanced emission effect from the perspective of the detailed classification, inherent mechanism and applicable systems. An outlook on the further exploration and application of this theory are also proposed.