Basit öğe kaydını göster

dc.contributor.authorAPAK, MUSTAFA REŞAT
dc.contributor.authorARDA, AYŞEM
dc.contributor.authorKOÇ, KÜÇÜK HÜSEYİN
dc.date.accessioned2023-10-10T12:47:29Z
dc.date.available2023-10-10T12:47:29Z
dc.identifier.citationKOÇ K. H., ARDA A., APAK M. R., "Heteroatom-Doped Carbon Quantum Dots and Polymer Composite as Dual-Mode Nanoprobe for Fluorometric and Colorimetric Determination of Picric Acid", ACS Applied Materials and Interfaces, 2023
dc.identifier.issn1944-8244
dc.identifier.otherav_25f45a7e-e739-4507-8eb9-7e2ebad71dce
dc.identifier.othervv_1032021
dc.identifier.urihttp://hdl.handle.net/20.500.12627/190251
dc.identifier.urihttps://doi.org/10.1021/acsami.3c07938
dc.identifier.urihttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85169847077&origin=inward
dc.description.abstractOxygen- and nitrogen-heteroatom-doped, water-dispersible, and bright blue-fluorescent carbon dots (ON-CDs) were prepared for the selective and sensitive determination of 2,4,6-trinitrophenol (picric acid, PA). ON-CDs with 49.7% quantum yield were one-pot manufactured by the reflux method using citric acid, d-glucose, and ethylenediamine precursors. The surface morphology of ON-CDs was determined by scanning transmission electron microscopy, high-resolution transmission electron microscopy, dynamic light scattering, Raman, infrared, and X-ray photoelectron spectroscopy techniques, and their photophysical properties were estimated by fluorescence spectroscopy, UV-vis spectroscopy, fluorescence lifetime measurement, and 3D-fluorescence excitation-emission matrix analysis. ON-CDs at an average particle size of 3.0 nm had excitation/emission wavelengths of 355 and 455 nm, respectively. With the dominant inner-filter effect- and hydrogen-bonding interaction-based static fluorescence quenching phenomena supported by ground-state charge-transfer complexation (CTC), the fluorescence of ON-CDs was selectively quenched with PA in the presence of various types of explosives (i.e., 2,4,6-trinitrotoluene, tetryl, 1,3,5-trinitroperhydro-1,3,5-triazine, 1,3,5,7-tetranitro-1,3,5,7-tetraazacyclooctane, pentaerythritol tetranitrate, 3-nitro-1,2,4-triazole-5-one, and TATP-hydrolyzed H2O2). The analytical results showed that the emission intensity varied linearly with a correlation coefficient of 0.9987 over a PA concentration range from 1.0 × 10-9 to 11.0 × 10-9 M. As a result of ground-state interaction (H-bonding and CTC) of ON-CDs with PA, an orange-colored complex was formed different from the characteristic yellow color of PA in an aqueous medium, allowing naked-eye detection of PA. The detection limits for PA with ON-CDs were 12.5 × 10-12 M (12.5 pM) by emission measurement and 9.0 × 10-10 M (0.9 nM) by absorption measurement. In the presence of synthetic explosive mixtures, common soil cations/anions, and camouflage materials, PA was recovered in the range of 95.2 and 102.5%. The developed method was statistically validated against a reference liquid chromatography coupled to tandem mass spectrometry method applied to PA-contaminated soil. In addition, a poly(vinyl alcohol)-based polymer composite film {PF(ON-CDs)} was prepared by incorporating ON-CDs, enabling the smartphone-assisted fluorometric detection of PA.
dc.language.isoeng
dc.subjectMühendislik ve Teknoloji
dc.subjectGenel Malzeme Bilimi
dc.subjectFizik Bilimleri
dc.subjectMühendislik, Bilişim ve Teknoloji (ENG)
dc.subjectMalzeme Bilimi
dc.titleHeteroatom-Doped Carbon Quantum Dots and Polymer Composite as Dual-Mode Nanoprobe for Fluorometric and Colorimetric Determination of Picric Acid
dc.typeMakale
dc.relation.journalACS Applied Materials and Interfaces
dc.contributor.departmentİstanbul Üniversitesi-Cerrahpaşa , ,
dc.contributor.firstauthorID4555602


Bu öğenin dosyaları:

DosyalarBoyutBiçimGöster

Bu öğe ile ilişkili dosya yok.

Bu öğe aşağıdaki koleksiyon(lar)da görünmektedir.

Basit öğe kaydını göster