A turn-on fluorescent probe for sensitive detection of sulfide anions and ascorbic acid by using Sulfanilic acid (cas 121-57-3) and glutathione functionalized graphene quantum dots
-
Add time:09/24/2019 Source:sciencedirect.com
The rational surface functionalization of graphene quantum dots (GQDs) has attracted much attention to extend their application in fabricating bio/chemical sensing platform. In this paper, a GQDs-based copper ions (Cu2+) modulated dual-functional fluorescent probe was developed. The attachment of Sulfanilic acid (cas 121-57-3) and glutathione onto GQDs through amide linkage to obtained the functionalized graphene quantum dots (termed as SSGQDs). The SSGQDs exhibit dramatically enhanced green fluorescence compared with GQDs. And the fluorescence of SSGQDs was found to be effectively quenched by Cu2+ via aggregation kinetics with the formation of SSGQDs-Cu(II) complex. Sulfide anions (S2−) exhibits a good capacity to remove Cu2+ from SSGQDs and dissociated SSGQDs-Cu(II) complex, as a result the fluorescence of SSGQDs was turned on again. Moreover, the introduction of ascorbic acid (AA) could also induce the fluorescence recovery, because it could reduce Cu2+ into Cu+ and result in the destruction of the SSGQDs-Cu(II) complex. This method can be used for the selective analysis of S2− and AA down to 12.6 nM and 20.3 nM, respectively. Furthermore, the applications of this probe for S2− and AA determination in lake water samples and beverage sample have been demonstrated with satisfactory results.
We also recommend Trading Suppliers and Manufacturers of Sulfanilic acid (cas 121-57-3). Pls Click Website Link as below: cas 121-57-3 suppliers
Prev:Sulfanilic acid (cas 121-57-3) catalyzed solvent-free synthesis of 1,5-benzodiazepine derivatives
Next:Kinetic, mechanistic and spectral studies for the oxidation of Sulfanilic acid (cas 121-57-3) by alkaline hexacyanoferrate(III)) - 【Back】【Close 】【Print】【Add to favorite 】
- Related Information
- Kinetic, mechanistic and spectral studies for the oxidation of Sulfanilic acid (cas 121-57-3) by alkaline hexacyanoferrate(III)09/25/2019
- Sulfanilic acid (cas 121-57-3) catalyzed solvent-free synthesis of 1,5-benzodiazepine derivatives09/10/2019
- A new EPR dosimeter based on Sulfanilic acid (cas 121-57-3)09/09/2019
- Enzymatic growth of single-layer MnO2 nanosheets in situ: Application to detect alkaline phosphatase and ascorbic acid in the presence of Sulfanilic acid (cas 121-57-3) functionalized graphene quantum dots09/08/2019
- Short Genome CommunicationsComplete genome sequence of Novosphingobium resinovorum SA1, a versatile xenobiotic-degrading bacterium capable of utilizing Sulfanilic acid (cas 121-57-3)09/07/2019
- Electrochemical incineration of Sulfanilic acid (cas 121-57-3) at a boron-doped diamond anode09/06/2019
- Kinetic of the degradation of Sulfanilic acid (cas 121-57-3) azochromotrop (SPADNS) by Fenton process coupled with ultrasonic irradiation or L-cysteine acceleration09/05/2019
- Sulfanilic acid (cas 121-57-3) increases intracellular free-calcium concentration, induces reactive oxygen species production and impairs trypsin secretion in pancreatic AR42J cells09/04/2019
-
Health and Chemical more >