Nitrogen-Doped Graphene Oxide Dots-Based "Turn-OFF" HO, Au(III), and "Turn-OFF-ON" Hg(II) Sensors as Logic Gates and Molecular Keypad Locks.

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ID: 31441
2019
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Abstract
Fluorescent nitrogen-doped graphene oxide dots (NGODs) have been demonstrated as an on-off nanosensor for the detection of Hg, Au, and HO. As compared to l-cystine, where the luminescence signal recovery results from the detachment of Hg from the NGODs, signal recovery through l-ascorbic acid (turn-off-on model) has been attributed to the reduction of Hg to Hg. The sustainable recovery of the photoluminescence signal is demonstrated using common citrus fruits containing vitamin C (l-AA), suggesting a promising practical usage of this sensing system. Additionally, the sensitivity of NGOD- and AA-originated signal recovery from the Hg(II)-NGODs mixture has been successfully tested in Hg ion-spiked tap water from three different places. Mimic devices were executed and verified on the basis of characteristic spectral changes, and the possible utility of this system in electronic security and memory element devices has also been demonstrated. Considering an easy synthesis process and excellent performance of NGODs, this investigation opens up new opportunities for preparing high-quality fluorescent NGODs to meet the requirements of many applications.
Reference Key
bogireddy2019nitrogendopedacs Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Bogireddy, Naveen Kumar Reddy;Barba, Victor;Agarwal, Vivechana;
Journal ACS omega
Year 2019
DOI
10.1021/acsomega.9b00858
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