Modifying electron injection kinetics for selective photoreduction of nitroarenes into cyclic and asymmetric azo compounds

Modifying the reactivity of substrates by encapsulation is essential for microenvironment catalysts. Herein, we report an alternative strategy that modifies the entry behaviour of reactants into the microenvironment and substrate inclusion thermodynamics related to the capsule to control the electro...

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Bibliographic Details
Published in:Nature communications 2022-04, Vol.13 (1), p.1940-1940, Article 1940
Main Authors: Yang, Yang, Jing, Xu, Zhang, Jing, Yang, Fengyu, Duan, Chunying
Format: Article
Language:English
Subjects:
639/638/263/49
639/638/541/965
Asymmetry
Azo compounds
Azo Compounds - chemistry
Catalysis
Catalysts
Cobalt
Condensates
Conversion
Design modifications
Electrons
Encapsulation
Free energy
Gibbs free energy
Green chemistry
Humanities and Social Sciences
Injection
Kinetics
Ligands
Microenvironments
multidisciplinary
Photocatalysis
Photoreduction
Science
Science (multidisciplinary)
Selectivity
Substrates
Thermodynamics
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Summary:Modifying the reactivity of substrates by encapsulation is essential for microenvironment catalysts. Herein, we report an alternative strategy that modifies the entry behaviour of reactants into the microenvironment and substrate inclusion thermodynamics related to the capsule to control the electron injection kinetics and the selectivity of products from the nitroarenes photoreduction. The strategy includes the orchestration of capsule openings to control the electron injection kinetics of electron donors, and the capsule’s pocket to encapsulate more than one nitroarene molecules, facilitating a condensation reaction between the in situ formed azanol and nitroso species to produce azo product. The conceptual microenvironment catalyst endows selective conversion of asymmetric azo products from different nitroarenes, wherein, the estimated diameter and inclusion Gibbs free energy of substrates are used to control and predict the selectivity of products. Inhibition experiments confirm a typical enzymatic conversion, paving a new avenue for rational design of photocatalysts toward green chemistry. Modifying the reactivity of substrates by encapsulation is essential for microenvironment catalysts. Herein, the authors report an alternative strategy that modifies the entry behaviour of reactants and substrates to control the electron injection kinetics, thus affecting the selectivity of nitroarene photoreductions.
ISSN:2041-1723
2041-1723
DOI:10.1038/s41467-022-29559-z