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![[DPEPhosbcpCu]PF6: A General and Broadly Applicable Copper-Based Photoredox Catalyst](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F59739.jpg&w=3840&q=50)
[DPEPhosbcpCu]PF6: A General and Broadly Applicable Copper-Based Photoredox Catalyst
Published on: May 21, 2019
Visible Light-Driven Oxidative Cleavage of Styrene via Supramolecular Polymers of Pyridinium-Thioxanthone and
Rui-Ting Zhang1, Fa-Dong Wang1, Hui Liu1
1School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo, Shandong Province 255000, P. R. China.
Abstract:
Augmenting reactive oxygen species production and enhancing the photocatalytic efficiency of organic systems remain critical challenges. Herein, we report a self-assembled supramolecular polymer photocatalyst (TX2Py-CB[8]) constructed via host-guest complexation between a thioxanthone derivative substituted with vinylpyridinium (TX2Py) and cucurbit[8]uril (CB[8]) in water. Compared to its monomeric form, TX2Py-CB[8] exhibits markedly enhanced fluorescence and significantly improved generation of superoxide anion radicals (O2•-), attributed to the confined microenvironment and electronic modulation afforded by the supramolecular assembly. As a visible light-driven photocatalyst, TX2Py-CB[8] demonstrates excellent activity in the oxidative cleavage of 1,1-stilbene, affording aldehyde/ketone products in high yields under mild conditions with a low catalyst dosage and extensive functional group compatibility. The work highlights a promising supramolecular method for developing efficient, metal-free photocatalysts toward sustainable oxidative transformations.
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