title: One-Step Synthesis and Characterization of N-Doped Carbon Nanodots for Sensing in Organic Media.
abstract: Photoluminescent nitrogen-doped carbon nanodots (N-doped CNDs) soluble in organic media are synthesized in a one-step synthesis from a single-source precursor (an amphiphilic polymer), which exhibits a very high quantum yield (QY = 78%), excitation wavelength-dependent emission, and upconversion emission properties. The evolution of N-doped CND formation is studied via ultraviolet-visible and photoluminescence spectroscopy. Their analytical application as an effective sensor for the direct determination of nitroaromatic explosives and byproducts is shown based on their selective response via a fluorescence quenching mechanism. The proposed method is validated in soil samples by directly using the sensor in organic media without any further treatment or additional functionalization, which is an interesting aspect for practical applications.
authors: Department of Analytical Chemistry, University of Córdoba , Marie Curie Building, Campus de Rabanales, E-14071 Córdoba, Spain.
authors: Angelina
authors: A
authors: Cayuela
authors: Department of Physics, Philipps University of Marburg , Renthof 7, 35037 Marburg, Germany.
authors: Carolina
authors: C
authors: Carrillo-Carrión
authors: Department of Analytical Chemistry, University of Córdoba , Marie Curie Building, Campus de Rabanales, E-14071 Córdoba, Spain.
authors: M Laura
authors: ML
authors: Soriano
authors: Department of Physics, Philipps University of Marburg , Renthof 7, 35037 Marburg, Germany.
authors: Wolfgang J
authors: WJ
authors: Parak
authors: Department of Analytical Chemistry, University of Córdoba , Marie Curie Building, Campus de Rabanales, E-14071 Córdoba, Spain.
authors: Miguel
authors: M
authors: Valcárcel