A redox-active covalent organic framework for the efficient detection and removal of hydrazine

Covalent organic frameworks (COFs) for electrochemical applications

“…For example, Zhu and co-workers have recently applied DAAQ-TFP COF (DQ-COF) as a substrate to study its capability for the removal and electrochemical detection of hydrazine from water solutions. 273 By virtue of the high surface area and the presence of abundant anthraquinone sites, DQ-COF exhibits a hydrazine removal capability as high as 1108 mg g À1 . Consequently, the DQ-COF was dropped onto a nickel matrix to form the DQ-COF/Ni composite (DQ-COF/Ni), which was further applied for the detection of hydrazine by using an amperometry technique.…”

Solving the COF trilemma: towards crystalline, stable and functional covalent organic frameworks

“…Examples include hydrazine giving rise to an azine linkage, 32 aminoamide forming the imidoimine linkage, 33 and the hydrazone linkage formed from carboxylic acid hydrazides or from phenyl hydrazines. 34,35 Phenazine formation from ortho diones with ortho diamines has been used for the formation of COFs. 36,37 This leads to the formation of two imine bonds in one COF linkage and the formation of an aromatic ring that improves the stability of these systems significantly in comparison to imines, while they often display poor crystallinity.…”

Malicious URL Detection Based on a Parallel Neural Joint Model

“…A set of matching rules was designed by Moshchuk in the SpyProxy to match the intercepted content transmitted from the web server to the browser. A system was proposed [20] known as Cujo for automatic detection and prevention of download attacks. It is embedded in a web proxy to inspect web pages and identify malicious code in pages.…”