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Issue 8, 2015
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A metal (Co)–organic framework-based chemiluminescence system for selective detection of L-cysteine

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Abstract

A metal (Co)–Organic Framework (Co-MOF) was first found to catalyze the chemiluminescence (CL) of luminol. On the basis of X-ray photoelectron spectroscopy, powder X-ray diffraction, CL spectral, UV-visible absorption spectral, and electron spin resonance (ESR) spectral studies, as well as the research of the influence of various free radical scavengers, a possible CL mechanism was proposed. The enhanced CL might be attributed to the formation of a peroxide analogous complex between the oxygen-related radicals and the active metal site of the Co-MOF material. The established Co-MOF–luminol CL system was successfully applied to determine L-cysteine (CySH), based on the selective and sensitive enhancing effect of CySH on this CL system. Under the optimized conditions, CySH was selectively detected in the range 0.1–10 μM with a detection limit of 18 nM. This novel CL system obviously gives impetus to the new research field of metal–organic frameworks (MOFs) in chemiluminescence.

Graphical abstract: A metal (Co)–organic framework-based chemiluminescence system for selective detection of l-cysteine

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Publication details

The article was received on 06 Jan 2015, accepted on 04 Feb 2015 and first published on 05 Feb 2015


Article type: Paper
DOI: 10.1039/C5AN00022J
Citation: Analyst, 2015,140, 2656-2663
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    A metal (Co)–organic framework-based chemiluminescence system for selective detection of L-cysteine

    N. Yang, H. Song, X. Wan, X. Fan, Y. Su and Y. Lv, Analyst, 2015, 140, 2656
    DOI: 10.1039/C5AN00022J

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