Szczegóły publikacji

Opis bibliograficzny

Covalent organic framework nanosheets as an enhancer for light-responsive oxidase-like nanozymes: multifunctional applications in colorimetric sensing, antibiotic degradation, and antibacterial agents / A. Santhana Krishna KUMAR, Wei-Bin Tseng, Emmanuvel Arputharaj, Po-Jung Huang, Wei-Lung Tseng, Tomasz BAJDA // ACS Sustainable Chemistry & Engineering [Dokument elektroniczny]. — Czasopismo elektroniczne ; ISSN 2168-0485. — 2023 — vol. 11 iss. 18, s. 6956–6969. — Wymagania systemowe: Adobe Reader. — Bibliogr. s. 6967-6969, Abstr. — Publikacja dostępna online od: 2023-04-24. — A. Santhana Krishna Kumar - dod. afiliacja: National Sun Yat-sen University, Taiwan

Autorzy (6)

Słowa kluczowe

colorimetric sensoroxidase-like activitynanozymescancer cell detectionantibioticswater disinfectioncovalent organic framework

Dane bibliometryczne

ID BaDAP146670
Data dodania do BaDAP2023-06-07
Tekst źródłowyURL
Rok publikacji2023
Typ publikacjiartykuł w czasopiśmie
Otwarty dostęptak
Creative Commons
Czasopismo/seriaACS Sustainable Chemistry & Engineering


We herein fabricated poly(ethyleneimine)-stabilized covalent organic framework nanosheets (PEI-COF NSs) via hydrothermal treatment and showed their roles in enhancing light-responsive oxidase-like activity; the interaction of citrate-capped gold nanoparticles (C-AuNPs) with PEI-COF NSs, named as PEI-COF NSs@C-AuNPs, results in an increased contact with dissolved O2 due to large surface and porosity of PEI-COF NSs and abundant amino functional groups on their planar surface. As a result of these features, the conversion of dissolved oxygen into superoxide anions and hydroxyl radicals under visible light can also be effectively catalyzed. Thus, PEI-COF NSs@C-AuNPs under visible light can catalyze more efficiently than C-AuNPs. Subsequently, the surface modification of PEI-COF NSs@C-AuNPs with thiolate polyethylene glycol-functionalized folic acid allowed the colorimetric sensing of folic acid receptor-overexpressed MCF-7 cells with a limit of detection of 30 cells/mL. Successively, the treatment of PEI-COF NSs@C-AuNPs with NaBH4 produces more surface defects, providing almost complete photodegradation of tetracycline and ciprofloxacin. In addition, the citrate-capped silver nanoparticles (C-AgNPs) decorated with PEI-COF NSs (named PEI-COF NSs@C-AgNPs) showed excellent antibacterial activity against Escherichia coli and Staphylococcus aureus cells with 17 and 34 ng/mL minimum inhibitory concentrations and 2.1 and 1.8 g/mL inhibition zone diameters, respectively, under visible light; the bactericidal mechanism of PEI-COF NSs@C-AgNPs was further investigated using electron microscopy-related techniques.