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Confinement-Induced Supramolecular Assembly for Enhanced Built-in Electric Fields: Boosting Charge Separation Efficiency in Organic Photocatalysts
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DOI：10.1039/D6NJ00757K.png)
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Abstract
En 中文
Enhanced charge separation efficiency is fundamental to advancing photocatalytic performance for environmental remediation and energy conversion. Current strategies for enhancing internal electric fields (IEF) in organic photocatalysts; including molecular design optimization and functional group modification; suffer from complex synthesis procedures and limited field enhancement capabilities. Herein; we address this challenge by constructing living supramolecular assemblies (LSA) through space-confined assembly of naphthalimide (NDI) monomers within layered double hydroxides (LDH); achieving a remarkable 5.23-fold enhancement of IEF intensity. This enhanced IEF resulted in a charge separation efficiency of 61.56% and dramatically improved photocatalytic performance; with the phenol degradation rate constant reaching 1.02 h -1 ; which is 14.60 times higher than that of crystalline NDI. Mechanistically; the space confinement effect promotes longrange ordered π-π stacking; which amplifies the IEF induced by intermolecular dipoles and facilitates efficient charge separation and transport. This space-confined supramolecular assembly strategy provides a robust platform for designing high-efficiency organic photocatalysts and opens new avenues for exploring multifunctional supramolecular materials in advanced photocatalytic applications.
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