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Fabrication of a Luminescence-Silent System Based on a Post-Synthetic Modification Cd-MOFs: A Highly Selective and Sensitive Turn-on Luminescent Probe for Ascorbic Acid Detection
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2019-04-18 00:00:00 , DOI: 10.1021/acs.inorgchem.9b00420
Jiannan Xiao 1 , Jingjuan Liu 1 , Meiying Liu 1 , Guanfeng Ji 1 , Zhiliang Liu 1
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2019-04-18 00:00:00 , DOI: 10.1021/acs.inorgchem.9b00420
Jiannan Xiao 1 , Jingjuan Liu 1 , Meiying Liu 1 , Guanfeng Ji 1 , Zhiliang Liu 1
Affiliation
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A unique three-dimensional luminescent metal–organic framework (Cd-MOFs), [Cd(tpbpc)2]·2H2O·DMF (Htpbpc = 4′-[4,2′;6′,4″]-terpyridin-4′-yl-biphenyl-4-carboxylic acid; DMF = dimethylformamide), was synthesized and structurally characterized; it exhibits excellent luminescent property and structural stability in aqueous solutions. Interestingly, an unparalleled luminescence-silent system CrO42–@Cd-MOFs was successfully fabricated by postsynthetic modification of metal–organic frameworks. This luminescence-silent system represents a highly selective and sensitive turn-on luminescent responding to ascorbic acid. First, this advanced fluorescent sensor displays excellent performance for CrO42– ions with a quenching of fluorescence intensity originating from fluorescence resonance energy transfer (FRET) mechanism. What’s more, the fluorescent intensity of CrO42–@Cd-MOFs system can be recovered (turn-on) for sensing ascorbic acid because of the elimination of FRET process. Such a novel fabrication strategy should offer the guidance to develop various MOFs-implicated luminescence-silent systems as “turn-on” sensors for detection of specific chemicals.
中文翻译:
基于合成后修饰的Cd-MOF的无声发光系统的制备:用于抗坏血酸检测的高选择性和灵敏的开启发光探针。
独特的三维发光金属-有机骨架(Cd-MOFs),[Cd(tpbpc)2 ]·2H 2 O·DMF(Htpbpc = 4'-[4,2'; 6',4'']-三联吡啶-合成了4'-基-联苯-4-羧酸; DMF =二甲基甲酰胺),并对其结构进行了表征;它在水溶液中具有出色的发光性能和结构稳定性。有趣的是,通过金属有机骨架的后合成修饰成功制造了无与伦比的发光-沉默系统CrO 4 2– @ Cd-MOF。该发光沉默系统代表了对抗坏血酸的高度选择性和灵敏的开启发光。首先,这种先进的荧光传感器对于CrO 4 2具有优异的性能,由于荧光共振能量转移(FRET)机理而产生荧光强度猝灭的离子。此外,由于消除了FRET过程,因此可以恢复(打开)CrO 4 2– @ Cd-MOFs系统的荧光强度,以检测抗坏血酸。这种新颖的制造策略应为开发各种MOF涉及的发光静音系统提供指导,以作为检测特定化学物质的“开启”传感器。
更新日期:2019-04-18
中文翻译:

基于合成后修饰的Cd-MOF的无声发光系统的制备:用于抗坏血酸检测的高选择性和灵敏的开启发光探针。
独特的三维发光金属-有机骨架(Cd-MOFs),[Cd(tpbpc)2 ]·2H 2 O·DMF(Htpbpc = 4'-[4,2'; 6',4'']-三联吡啶-合成了4'-基-联苯-4-羧酸; DMF =二甲基甲酰胺),并对其结构进行了表征;它在水溶液中具有出色的发光性能和结构稳定性。有趣的是,通过金属有机骨架的后合成修饰成功制造了无与伦比的发光-沉默系统CrO 4 2– @ Cd-MOF。该发光沉默系统代表了对抗坏血酸的高度选择性和灵敏的开启发光。首先,这种先进的荧光传感器对于CrO 4 2具有优异的性能,由于荧光共振能量转移(FRET)机理而产生荧光强度猝灭的离子。此外,由于消除了FRET过程,因此可以恢复(打开)CrO 4 2– @ Cd-MOFs系统的荧光强度,以检测抗坏血酸。这种新颖的制造策略应为开发各种MOF涉及的发光静音系统提供指导,以作为检测特定化学物质的“开启”传感器。