A 2D donor–acceptor covalent organic framework with charge transfer for supercapacitors

Abstract

A electron donor-acceptor covalent organic framework (TTF-COF1) was constructed by imine condensation of electron donor tetraformyl-tetrathiafulvalene (TTF-fo) and electron acceptor 2,6-diaminoanthraquinone (DAQ). TTF-COF1 involves in intramolecular charge transfer, offering a...

A nanostructured covalent organic framework with readily accessible triphenylstibine moieties for high-performance supercapacitors

“…The other strategy is to introduce, usually via a bottom-up synthetic strategy, redox-active groups that could provide additional pseudocapacitor behaviour on the basis of electrochemical double-layer capacitor (EDLC) behaviour. For example, anthraquinone, 7 phosphine, 8 triazine, 9 and pyridine groups 10 have been successfully employed to construct pseudocapacitive COF materials. These redox-active groups could act quickly and effectively to absorb and release charge to provide effective and fast charging and discharging characteristics for supercapacitors.…”

Solvothermal synthesis of triphenylamine‐based covalent organic framework nanofibers with excellent cycle stability for supercapacitor electrodes

“…We observe that TAPA has NH stretching peaks 31 at 3407 and 3336 cm −1 , and TFPA has C═O stretching peaks 32 at 1692 cm −1 . Compared with the FTIR spectra of TFPA and TAPA, we can find that the stretching vibration peak of NH and C═O stretching vibration peak are disappeared in TPA‐COFs, and are replaced by a new C═N 36 (1618 cm −1 ) stretching vibration peak. Through the analysis of infrared spectroscopy, it can be proved that the raw materials are consumed and the target product is formed.…”

Strategies for Improving the Catalytic Performance of 2D Covalent Organic Frameworks for Hydrogen Evolution and Oxygen Evolution Reactions

“…[67] Based on the influence of electron and hole mobility on HER catalytic activity, designing donor-acceptor (DÀ A) COFs has also received considerable attention from researchers. [68][69][70] For example, by the connection of electron-rich pyrene and electron-deficient thiazolo [5,4-d]thiazole, Wen group successfully synthesized a novel DÀ A COF (PyTz-COF) (Figure 9a). [71] The study showed PyTz-COF had an excellent ability for photoelectrochemical performance for HER.…”