Yan'an City Key Laboratory of New Energy & New Functional Materials, Shaanxi Key Laboratory of Chemical Reaction Engineering, College of Chemistry and Chemical Engineering, Yan'an University, Yan'an 716000, PR China.
Yan'an City Key Laboratory of New Energy & New Functional Materials, Shaanxi Key Laboratory of Chemical Reaction Engineering, College of Chemistry and Chemical Engineering, Yan'an University, Yan'an 716000, PR China.
Spectrochim Acta A Mol Biomol Spectrosc. 2022 Mar 15;269:120752. doi: 10.1016/j.saa.2021.120752. Epub 2021 Dec 14.
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.
一种稳定的发光 Cd-MOF，其化学式为[Cd(L)(4, 4'-bpy)]·HO（1），（HL = 1,1'-乙基联苯-3,3',5,5'-四羧酸，4,4'-bpy = 4,4'-联吡啶），是在溶剂热条件下获得的。1 在 pH 值为 1.5 到 12.2 以及不同有机溶剂中均表现出稳定性。1 可以通过荧光猝灭法高灵敏度和选择性地检测四环素和硝基苯。检测限分别为 0.14 μM 和 14 nM。有趣的是，1 可以包裹 Tb 并敏化其特征峰。此外，还利用 Tb@Cd-MOF 的发光性能制备了荧光墨水。荧光墨水中的光在酸性气体 HCl 气氛中消失，然后在碱性气体氨气氛中重新出现。这种现象可以重复，文章中也解释了这种现象的原因。因此，Tb@Cd-MOF 在信息加密方面具有巨大的应用潜力。
