Metal–oxygen clusters as peroxidase mimics for their multifarious applications in colorimetric sensors. (7th August 2019)

• Record Type: Journal Article
• Authors: Wei, Mei-Jie; Fu, Jia-Qi; Li, Bo; Shao, Kui-Zhan; Zang, Hong-Ying; Wang, Xiao-Hong; Su, Zhong-Min
• Is Part Of: New journal of chemistry. Volume 43:Number 34(2019)
• Page Start: 13430
• Page End: 13436
• Publication Date: 2019-08-07
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/c9nj02748c
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : Metal–oxygen cluster (Fe28 ) was certified to own inherent peroxidase-like performance, which displayed multi-functional applications in H2 O2, glucose and dopamine detection. Abstract : A metal–oxygen cluster (Fe28 ) was certified to show inherent peroxidase-like performance, which could catalyze the oxidation of the peroxidase substrate 3, 3′, 5, 5′-tetramethylbenzidine (TMB) using H2 O2 in aqueous solution for the first time. The compound Fe28 as a peroxidase mimic displayed multi-functional applications in the detection of H2 O2, glucose and dopamine. The TMB/Fe28 /H2 O2 system supplied a simple colorimetric approach for the detection of H2 O2 and glucose with good sensitivity and had a linear range from 2.62 × 10 −5 mol L −1 to 1.57 × 10 −4 mol L −1 and 3.92 × 10 −6 mol L −1 to 3.14 × 10 −5 mol L −1, respectively. Moreover, the Fe28 cluster could detect dopamine without H2 O2 with a linear range from 4.62 × 10 −5 mol L −1 to 4.16 × 10 −4 mol L −1 . Moreover, the Fe28 cluster was low-priced, easy to synthesize and extremely effective in a colorimetric assay, which could lead to new opportunities for the development and application of metal–oxygen clusters.