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Updated: Jun 24, 2026

Microfluidic-based Synthesis of Covalent Organic Frameworks (COFs): A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface
Published on: July 10, 2017
Programmable energy transfer in multivariate porphyrin-based 3D covalent organic frameworks
Qinhui Ni1,2, Xiaohui Li3, Chao Zhu2
1College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China. ywpeng@zjut.edu.cn.
Abstract:
Efficient excited-state energy transfer (ET) is fundamental to artificial photosynthesis and solar energy conversion, yet conventional heterogeneous composites commonly suffer from nonradiative interfacial losses and limited structural precision. Herein, we report a family of multivariate porphyrin-based three-dimensional covalent organic frameworks (3D COFs) with bcu topology, in which electronically complementary benzimidazole donor and benzoselenadiazole acceptor chromophores are periodically integrated within a single crystalline lattice. The resultant TS-PCOF displays broadened visible-light absorption and pronounced donor-acceptor spectral overlap. Combined steady-state and time-resolved spectroscopic analyses reveal efficient intraframework ET on a sub-nanosecond timescale, delivering an ET efficiency of up to 23.8%. This work highlights multivariate 3D COFs as structurally precise platforms for programmable light harvesting and directional energy migration, providing a promising strategy for advanced photonic and solar-energy-conversion systems.
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