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Confinement-Induced Supramolecular Assembly for Enhanced Built-in Electric Fields: Boosting Charge Separation Efficiency in Organic Photocatalysts

delete2026-06-30
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PRE
AI
Q
Qi Wu
F
Fei Guan
L
Liping Guan
X
Xianggui Kong
W
Wenying Shi
DOI:10.1039/D6NJ00757Kdelete
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Abstract

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.

Journal

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new j. chem.
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726
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