AI Article Synopsis
- A stable luminescent Cd-MOF (metal-organic framework), named [Cd(L)(4, 4'-bpy)]·HO, was synthesized using solvothermal methods and shows remarkable stability across a wide pH range (1.5 to 12.2) and various organic solvents.
- The material can selectively detect tetracycline and nitrobenzene through fluorescence quenching, with low detection limits of 0.14 μM and 14 nM, respectively.
- Additionally, it can encapsulate terbium (Tb) to enhance its luminescent properties, which can be applied in creating a fluorescent ink that responds to acidic and alkaline environments, suggesting potential for use in information encryption.
Article Abstract
A stable luminescent Cd-MOF, formulated as [Cd(L)(4, 4'-bpy)]·HO (1), (HL = 1, 1'-ethylbiphenyl -3, 3', 5, 5'- tetracarboxylic acid, 4, 4' -bpy = 4, 4'-bipyridine), is acquired under solvothermal conditions. 1 exhibits stability in the pH range from 1.5 to 12.2 and in different organic solvents. 1 can detect tetracycline and nitrobenzene by fluorescence quenching with high sensitivity and selectivity. The detection limits are 0.14 μM and 14 nM, respectively. Interestingly, 1 can encapsulate Tb and sensitize its characteristic peaks. Moreover, the fluorescent ink is prepared by using the luminescent properties of the Tb@Cd-MOF. The light of the fluorescent ink disappears in an acid gas HCl atmosphere and then reappears in an alkaline gas ammonia atmosphere. This phenomenon can be repeated and the reason for this phenomenon is also explained in the article. Therefore, Tb@Cd-MOF has huge application potential in information encryption.
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| http://dx.doi.org/10.1016/j.saa.2021.120752 | DOI Listing |
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