A covalent organic framework constructed from a donor–acceptor–donor motif monomer for photocatalytic hydrogen evolution from water

Abstract

Covalent organic frameworks (COFs), featuring semiconductor-like behavior, have recently garnered widespread interest for applications in photocatalysis by virtue of their well-defined and tailorable porous structures, high surface areas as well...

Impact of the Crystallinity of Covalent Organic Frameworks on Photocatalytic Hydrogen Evolution

“…Donor–acceptor systems provide effective charge separation with high electron mobility through the easy transfer of photoexcited electrons from the donor molecule to the acceptor. Therefore, the rational design of donor–acceptor structures offered an interesting possibility to improve the photocatalytic hydrogen generation efficiency of COFs. , …”

“…Therefore, the rational design of donor− acceptor structures offered an interesting possibility to improve the photocatalytic hydrogen generation efficiency of COFs. 120,121 4. Catalyst: The catalyst also plays an important role in forming the crystalline structure of COFs.…”

“…Donor–acceptor systems provide effective charge separation with high electron mobility through the easy transfer of photoexcited electrons from the donor molecule to the acceptor. Therefore, the rational design of donor–acceptor structures offered an interesting possibility to improve the photocatalytic hydrogen generation efficiency of COFs. , Catalyst: The catalyst also plays an important role in forming the crystalline structure of COFs. For example, acetic acid or trifluoroacetic acid (TFA) has been commonly used as a catalyst for the synthesis of imine- or enamine-linked COFs.…”

Recent advances on covalent organic frameworks (COFs) as photocatalysts: different strategies for enhancing hydrogen generation

“…Adopting this strategy, a variety of COFs have been prepared. [53][54][55][56][57][58][59][60][61][62][63][64][65][66][67][68] For example, Yang et al designed PETZ-COF via the solvothermal reaction of electron-donating 4PE-4NH 2 and electron-deficient TZTZ-2BA for photocatalytic H 2 generation. As a comparison, a COF (PEBP-COF) without D-A moieties was also constructed using 4PE-4NH 2 to react with BP-2BA (Fig.…”

Partially H-bonded covalent organic frameworks for photocatalytic hydrogen evolution

“…[4][5][6] In contrast, photocatalytic hydrogen production from water is much cleaner, safer, and more efficient, and has received considerable attention from researchers. [7][8][9] Therefore, it is of particular importance to design and develop photocatalysts with high efficiency.…”