title: Photoelectric covalent organic frameworks: converting open lattices into ordered donor-acceptor heterojunctions.
abstract: Ordered one-dimensional open channels represent the typical porous structure of two-dimensional covalent organic frameworks (COFs). Here we report a general synthetic strategy for converting these open lattice structures into ordered donor-acceptor heterojunctions. A three-component topological design scheme was explored to prepare electron-donating intermediate COFs, which upon click reaction were transformed to photoelectric COFs with segregated donor-acceptor alignments, whereas electron-accepting buckyballs were spatially confined within the nanochannels via covalent anchoring on the channel walls. The donor-acceptor heterojunctions trigger photoinduced electron transfer and allow charge separation with radical species delocalized in the π-arrays, whereas the charge separation efficiency was dependent on the buckyball content. This new donor-acceptor strategy explores both skeletons and pores of COFs for charge separation and photoenergy conversion.
authors: College of Materials Science and Engineering, Beijing Institute of Technology , 5 South Zhongguancun Street, Haidian District, Beijing 100081, China.
authors: Long
authors: L
authors: Chen
authors: Ko
authors: K
authors: Furukawa
authors: Jia
authors: J
authors: Gao
authors: Atsushi
authors: A
authors: Nagai
authors: Toshikazu
authors: T
authors: Nakamura
authors: Yuping
authors: Y
authors: Dong
authors: Donglin
authors: D
authors: Jiang