Prolonging triplet-state lifetimes to boost the energy and electron transfer in conjugated organic polymers for photocatalytic amide formation

IF 6.5 1区 化学 Q2 CHEMISTRY, PHYSICAL Journal of Catalysis Pub Date : 2024-12-14 DOI:10.1016/j.jcat.2024.115898
Weijie Zhang, Bingxin Wang, Luting Liu, Xinye Luo, Quan Wan, Bing Yi, Weijie Chi, Hai Yang
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Abstract

Long-lived triplet excited states have been regarded as active species in the implementation of photochemical strategies owing to their associated high energy and electron transfer abilities, yet it was still challenging to fulfill this in polymeric photocatalysis. Herein, we formulated a built-in donor–acceptor interaction control strategy to prolong the excited-state lifetime in conjugated organic polymers (COPs) by minimizing the exciton binding energy in the first excited state. The resultant COPs decorated with tris([1,2,4]triazolo)[4,3-a:4′,3′-c:4′’,3′’-e][1,3,5]triazine exhibited excellent activities in photocatalytic amide formation (95 % yield), which was much higher than that of triazine rings as an analogous moiety(66 % yield) owing to its prolonged triplet-state lifetimes (τ = 30.5 µs) and the improved photo-induced charge separation efficiency. These results not only demonstrate the feasibility of realizing triplet excited states for heterogeneous photocatalysis through molecular engineering but also offers insights into energy and electron transfer at the molecular level.

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延长三重态寿命,促进共轭有机聚合物中的能量和电子转移,实现光催化酰胺形成
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来源期刊
Journal of Catalysis
Journal of Catalysis 工程技术-工程:化工
CiteScore
12.30
自引率
5.50%
发文量
447
审稿时长
31 days
期刊介绍: The Journal of Catalysis publishes scholarly articles on both heterogeneous and homogeneous catalysis, covering a wide range of chemical transformations. These include various types of catalysis, such as those mediated by photons, plasmons, and electrons. The focus of the studies is to understand the relationship between catalytic function and the underlying chemical properties of surfaces and metal complexes. The articles in the journal offer innovative concepts and explore the synthesis and kinetics of inorganic solids and homogeneous complexes. Furthermore, they discuss spectroscopic techniques for characterizing catalysts, investigate the interaction of probes and reacting species with catalysts, and employ theoretical methods. The research presented in the journal should have direct relevance to the field of catalytic processes, addressing either fundamental aspects or applications of catalysis.
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