Volume 42, Issue 10 pp. 1093-1099
Concise Report

Immobilizing Triphenylamine with Photoredox Inert Sr2+ Forming Sr-MOF with Controlled Electron Migration for Photocatalytic Oxidation of Thiols to Disulfides

Ying-Xia Wang

Ying-Xia Wang

Key Laboratory of Magnetic Molecules and Magnetic Information Materials (Ministry of Education), School of Chemistry and Materials Science, Shanxi Normal University, Taiyuan, Shanxi, 030006 China

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Fang Zheng

Fang Zheng

Key Laboratory of Magnetic Molecules and Magnetic Information Materials (Ministry of Education), School of Chemistry and Materials Science, Shanxi Normal University, Taiyuan, Shanxi, 030006 China

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Dong-Xia Song

Dong-Xia Song

Key Laboratory of Magnetic Molecules and Magnetic Information Materials (Ministry of Education), School of Chemistry and Materials Science, Shanxi Normal University, Taiyuan, Shanxi, 030006 China

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Bao-Yue Niu

Bao-Yue Niu

Key Laboratory of Magnetic Molecules and Magnetic Information Materials (Ministry of Education), School of Chemistry and Materials Science, Shanxi Normal University, Taiyuan, Shanxi, 030006 China

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Lu-Qian Deng

Lu-Qian Deng

Key Laboratory of Magnetic Molecules and Magnetic Information Materials (Ministry of Education), School of Chemistry and Materials Science, Shanxi Normal University, Taiyuan, Shanxi, 030006 China

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Xian-Ming Zhang

Corresponding Author

Xian-Ming Zhang

Key Laboratory of Magnetic Molecules and Magnetic Information Materials (Ministry of Education), School of Chemistry and Materials Science, Shanxi Normal University, Taiyuan, Shanxi, 030006 China

Key Laboratory of Interface Science and Engineering in Advanced Material (Ministry of Education), College of Chemistry, Taiyuan University of Technology, Taiyuan, Shanxi, 030024 China

E-mail: [email protected]Search for more papers by this author
First published: 12 February 2024
Citations: 2

Comprehensive Summary

The photocatalytic oxidative coupling of thiols is one of the most popular methods to synthesize the disulfides. Triphenylamine and its derivatives (TPAs) are promising for the above reaction, but suffer from the easy polymerization and difficult separation. To overcome these obstacles while controlling the photogenerated electrons transfer directly to target substrates, herein, we constructed one TPA-based metal-organic framework (MOF), (Me2NH2)[Sr(TCBPA)]·DMA·3H2O (1), by direct self-assembly of tris(4′-carboxybiphenyl)amine (H3TCBPA) and photoredox inert strontium ion (Sr2+). DFT calculations revealed that the valence band maximum (VBM) and the conduction band minimum (CBM) are mainly located on TCBPA3–, successfully inhibiting the undesirable electron migration to metal nodes. Experimental results indicated that 1 displays superior performance than homogeneous H3TCBPA, which may result from the abundant π···π and C—H···π interactions between the well-arranged TCBPA3– and the build-in electric field between the anionic framework and the Me2NH2+. This work highlights that immobilizing TPAs into MOFs is one promising approach to designing heterogeneous photocatalysts for the synthesis of disulfides by oxidative coupling of thiols.image

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