Novel Nanoparticle-based Colorimetric Probes and Sensors for Determining Phenolic Antioxidants, Biothiols, Nitrite and Hydrogen Peroxide. (2017)

• Record Type: Journal Article
• Authors: Apak, Reşat; Erçağ, Erol; Özyürek, Mustafa; Güçlü, Kubilay; Üzer, Ayşem; Çelik, Saliha Esin; Bekdeşer, Burcu; Can, Ziya; Sağlam, Şener
• Is Part Of: Procedia technology. Volume 27(2016)
• Page Start: 94
• Page End: 95
• Publication Date: 2017
• Subjects: Nanoparticles -- sensors -- biothiols -- phenolic antioxidants -- nitrite -- hydrogen peroxide; Technology -- Congresses; Technology -- Periodicals; Engineering -- Congresses; Engineering -- Periodicals; Engineering; Technology; Conference proceedings; Periodicals; 605
• DOI: 10.1016/j.protcy.2017.04.040
• Languages: English
• ISSNs: 2212-0173

Abstract

Abstract: This study examines the principles and milestones of nanoparticle (NP)-based colorimetric sensors and probes developed by our research group. A novel method for antioxidant capacity estimation was developed on the polyphenol-mediated growth of Ag-NPs and optical monitoring of the corresponding plasmon absorption bands. A new optical sensor using Ellman's reagent-adsorbed gold nanoparticles in colloidal solution was devised to selectively determine biothiols. Nitrite was determined by means of 4-aminothiophenol-modified Au-NPs and naphthylethylene diamine as coupling agent. Hydrogen peroxide was detected with the use of Fe3 O4 magnetite NPs as peroxidase-like catalyst using a N, N -dimethyl- p -phenylenediamine (DMPD) probe.