Journal
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
Volume 175, Issue -, Pages 11-16Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2016.12.014
Keywords
Co-metal-organic frameworks; Metallogels transformation; Chemiluminescence; Cyesteine
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Funding
- National Natural Science Foundation of China (NSFC) [21575117]
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Cation exchange-mediated transformation from Zn-metallogels (MOGs), which was a mild facile strategy relative to the demanding hydrothermal method, was employed to develop Co2+ metal-organic frameworks (Co-MOFs) at room temperature. The obtained Co-MOFs was of uniform octahedral morphology and possessed high activity to catalyze luminol chemiluminescence without extra oxidants. By adding cysteine, the CL emission of luminol-Co-MOFs system was further enhanced. Based on this phenomenon, Co-MOFs was utilized to build a practical sensing platform for cysteine determination. Under the optimized conditions, the relative CL intensity (Delta I) was proportional to the concentration of cysteine in the range of 2-10 mu M, and the detection limit was 0.49 mu M (3S/N). Moreover, the established method was applied to the determination of cysteine in commercially available pharmaceutical injections. (C) 2016 Elsevier B.V. All rights reserved.
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