Fluorescent pattern recognition of metal ions by nanoparticles of bovine serum albumin as a chemical nose/tongue

Fan, Yu-Lin; Lu, Yaojuan; Ding, Xu-Yin; Wang, Naihong; Xu, Feng; Shi, Guoyue; Zhang, Min

doi:10.1039/d0an01509a

Cited by 8 publications

(1 citation statement)

References 34 publications

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“…[ 13–16 ] However, up to now, the reported luminescent sensor arrays mostly rely on a series of separated sensing molecules, which still suffer from tedious experimental operation and data processing. [ 17–23 ] Therefore, the development of the simpler and combinatorial fluorescent sensor arrays by employing several receptors and fluorophores into a single‐phase material are highly desirable.…”

Section: Introductionmentioning

confidence: 99%

An MOF‐Based Luminescent Sensor Array for Pattern Recognition and Quantification of Metal Ions

Guan

Jiang

Cui

et al. 2021

Advanced Optical Materials

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The development of a convenient method for the discrimination of typically quenching metal ions such as Cu2+, Co2+, Ni2+, and Fe3+ is of great interest but still a challenge. By simultaneously incorporating Eu3+ and organic dye 3,3′‐diethyloxacarbocyanine iodide (DOC) into a metal‐organic framework, MOF‐253, a luminescent sensor array MOF‐253⊃Eu3++DOC with three emission centers is generated. Utilizing the diversity of quenching responses of metal ions to the different emission centers, five metal ions including Ag+, Cu2+, Fe3+, Co2+ and Ni2+ can be well distinguished with a discrimination accuracy of 100% at a concentration as low as 60 µm. Subsequently, the binary and ternary mixtures of three metal ions (Fe3+, Co2+, and Ni2+) can also be discriminated successfully. Furthermore, taking Cu2+ and Ag+ as examples, this MOF‐based sensor array can quantify the ion concentration at a low range from 0 to 15 µm. Most probably, this is the first case of simultaneous recognition and quantitation of metal ions in an aqueous solution using an MOF‐based luminescent sensor array. Since a variety of luminescent species including organic dyes and lanthanide ions can be introduced into MOFs to generate multiple‐dimensional luminescence, such strategy will open a new avenue for luminescent sensor assays.

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Section: Introductionmentioning

confidence: 99%