Amino group dependent sensing properties of metal-organic frameworks: selective turn-on fluorescence detection of lysine and arginine.

ABSTRACT: Recently, metal-organic frameworks (MOFs) have been extensively investigated as fluorescence chemsensors due to their tunable porosity, framework structure and photoluminescence properties. In this paper, a well-known Zr(iv)-based MOF, UiO-66-NH₂ was demonstrated to have capability for detection of l-lysine (Lys) and l-arginine (Arg) selectively from common essential amino acids in aqueous media via a fluorescence turn-on mechanism. Further investigation reveals its high sensitivity and strong anti-interference properties. Moreover, the possible mechanism for sensing Lys and Arg was explored by FT-IR and ¹H-NMR, and the results indicate that the enhancement of the fluorescence could be ascribed to the adsorption of Lys/Arg and the hydrogen bonding interactions

SUBMITTER: Dong J 

PROVIDER: S-EPMC9057127 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature