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J Am Chem Soc. 2015 Dec 30;137(51):16209-15. doi: 10.1021/jacs.5b10308. Epub 2015 Dec 21.

Effective Detection of Mycotoxins by a Highly Luminescent Metal-Organic Framework.

Author information

1
Department of Chemistry and Chemical Biology, Rutgers University , 610 Taylor Road, Piscataway, New Jersey 08854, United States.
2
Department of Chemistry and Biochemistry, Northern Illinois University , 1425 W. Lincoln Highway, DeKalb, Illinois 60115, United States.
3
Advanced Light Source, Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley California 94720, United States.

Abstract

We designed and synthesized a new luminescent metal-organic framework (LMOF). LMOF-241 is highly porous and emits strong blue light with high efficiency. We demonstrate for the first time that very fast and extremely sensitive optical detection can be achieved, making use of the fluorescence quenching of an LMOF material. The compound is responsive to Aflatoxin B1 at parts per billion level, which makes it the best performing luminescence-based chemical sensor to date. We studied the electronic properties of LMOF-241 and selected mycotoxins, as well as the extent of mycotoxin-LMOF interactions, employing theoretical methods. Possible electron and energy transfer mechanisms are discussed.

PMID:
26654703
DOI:
10.1021/jacs.5b10308
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