Covalent organic framework based multifunctional self-sanitizing face masks

Abstract

As an important personal protective equipment (PPE), facemasks play an important role in self-protection during disastrous COVID-19 and other respiratory viruses pandemic. On the other hand, massive utilization of disposable...

Covalent organic frameworks and multicomponent reactions: an endearing give-and-take relationship

“…Finally, an isocyanate-terminated polyurethane oligomer was added to Ag@DhaTphCOOH NPs in chloroform to acquire Ag@DhaTph-COOH@M for use as a bioprotective face mask. 56 The same group have reported this Doebner 3CR for the construction of the acid-base bifunctional COFs. The quinoline-4-carboxylic acid linked COFs were deployed for promotion of the one-pot cascade deacetalization-Knoevenagel condensation reaction between benzaldehyde dimethylacetal and malononitrile for the synthesis of benzylidenemalononitrile under solvent-free conditions.…”

“…Finally, an isocyanate-terminated polyurethane oligomer was added to Ag@DhaTphCOOH NPs in chloroform to acquire Ag@DhaTph-COOH@M for use as a bioprotective face mask. 56…”

Metalated covalent organic frameworks: from synthetic strategies to diverse applications

“…The COF-supported metal nanoparticles are stable, well-dispersed, and ultrafine (1–2 nm). In fact, NaBH 4 is an excellent reducing agent and has been widely used in the preparation of the Pd, 140,143,195,271,311–317 Ag, 318–320 Ru, 321 and Pt 271,312,314 nanoparticles loaded in COFs.…”

“…61). 319 Ag@DhaTph-COOH has photothermal and photodynamic properties that can be combined with nanosilver to enhance the antimicrobial effect. The inactivation efficiency of Ag@DhaTph-COOH exceeded 95% for bacteria (including E. coli and S. aureus ) and viruses (including influenza A virus subtype H1N1 and vesicular stomatitis virus) under a laboratory xenon lamp and even real sunlight.…”

Synthesis of Metal-Free Chiral Covalent Organic Framework for Visible-Light-Mediated Enantioselective Photooxidation in Water

“…To more intuitively inspect this photoinduced 1 O 2 generation, the electron paramagnetic resonance (EPR) spin-trapping experiment was carried out using 2,2,6,6-tetra-methylpiperidine (TEMP) as the 1 O 2 trapping agent . As depicted in Figure b, a series of characteristic signals of TEMP- 1 O 2 adduct were observed for ( R )- DTP-COF-QA under light irradiation, whereas no TEMP- 1 O 2 signal was detected in the dark under the same conditions.…”