Sensing Properties of NH2-MIL-101 Series for Specific Amino Acids via Turn-On Fluorescence

被引：27
作者：
Dong, Jing [1 ,2 ]
Dao, Xiao-Yao [1 ]
Zhang, Xiao-Yu [1 ]
Zhang, Xiu-Du [3 ]
Sun, Wei-Yin [1 ]
机构：
[1] Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing Natl Lab Microstruct,Coordinat Chem Inst, Sch Chem & Chem Engn,State Key Lab Coordinat Chem, Nanjing 210023, Peoples R China
[2] Nanjing Tech Univ, Sci Res Dept, Nanjing 211816, Peoples R China
[3] Anhui Normal Univ, Anhui Key Lab Funct Mol Solids, Anhui Lab Mol Based Mat, Minist Educ,Key Lab Funct Mol Solids,Coll Chem &, Wuhu 241002, Peoples R China
来源：
MOLECULES | 2021年 / 26卷 / 17期
关键词：
metal-organic frameworks; MIL-101; amino acids; fluorescence sensing; turn-on effect; METAL-ORGANIC FRAMEWORKS; SELECTIVE DETECTION; NANOCLUSTERS; CYSTEINE; LYSINE; ENCAPSULATION; RECOGNITION; HISTIDINE; SENSOR; SITES;
D O I：
10.3390/molecules26175336
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
Metal-organic frameworks (MOFs) have been demonstrated to be desired candidates for sensing definite species owing to their tunable composition, framework structure and functionality. In this work, the NH2-MIL-101 series was utilized for sensing specific amino acids. The results show that cysteine (Cys) can significantly enhance the fluorescence emission of NH2-MIL-101-Fe suspended in water, while NH2-MIL-101-Al exhibits the ability to sense lysine (Lys), arginine (Arg) and histidine (His) in aqueous media via turn-on fluorescence emission. Titration experiments ensure that NH2-MIL-101-Fe and NH2-MIL-101-Al can selectively and quantitatively detect these amino acids. The sensing mechanism was examined and discussed. The results of this study show that the metal centers in MOFs are crucial for sensing specific amino acids.
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页数：11
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