Novel manganese(II)-based metal-organic gels: synthesis, characterization and application to chemiluminescent sensing of
- PDF / 884,201 Bytes
- 8 Pages / 595.276 x 790.866 pts Page_size
- 94 Downloads / 274 Views
ORIGINAL PAPER
Novel manganese(II)-based metal-organic gels: synthesis, characterization and application to chemiluminescent sensing of hydrogen peroxide and glucose Jiaqi Yu 1 & Mengya Cao 1 & Hao Wang 1 & Yongxin Li 1 Received: 23 April 2019 / Accepted: 9 September 2019 # Springer-Verlag GmbH Austria, part of Springer Nature 2019
Abstract A metal-organic gel (MOG) was synthesized that is composed of manganese(II) as the central ion and 1,10-phenanthroline-2,9dicarboxylic acid as the ligand. The resulting MOG exhibits excellent activity for catalyzing the chemiluminescence (CL) of the luminol/hydrogen peroxide system. The CL system was characterized by CL spectra, UV-vis absorption spectra and by studying potential interferences by common radical scavengers. The CL reaction was exploited in a new scheme for the determination of hydrogen peroxide. CL intensity increases linearly in the 0.4 μM ~ 3 mM hydrogen peroxide concentration range, and the limit of detection (LOD) is 0.12 μM. The method was extended to an enzymatic assay for glucose by using glucose oxidase and by measurement of the enzymatically formed hydrogen peroxide. The assay works in the 0.2 μM ~ 3 mM glucose concentration range, and the LOD is 0.08 μM. Keywords Metal−organic gels . Luminol . Hydrogen peroxide . Glucose . Chemiluminescence
Introduction Metal−organic gels (MOGs) are self-assembled from metal ions and organic ligand through metal-organic coordination and noncovalent interactions. They have received much attention due to their unique optical, magnetic and catalytic properties [1–4]. Currently, MOGs have been extensively applied in all kinds of fields, such as drug delivery, [5] environmental analysis, [6] sensing, [7] and adsorption [8]. According to their high efficiency, nontoxic, easy preparation and low cost, the metalMOGs exhibit good performance for a catalytic application, [8] but have rarely reported in chemiluminescence (CL) reaction [1]. Electronic supplementary material The online version of this article (https://doi.org/10.1007/s00604-019-3808-8) contains supplementary material, which is available to authorized users. * Yongxin Li [email protected] 1
Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, People’s Republic of China
Due to the simple instrument, high sensitivity, wide linear range, and low background, CL has been extensively used in chemical−/biological-analysis [9–11]. Despite having the above advantages, the low efficiency is always a big concern for traditional CL systems, which greatly limits its further development. Therefore, enhancing CL efficiency is always attracted enormous interests during the past decades through developing new CL reactions and fabricating novel functional CL catalysts. For example, noble-metal nanoparticles (NPs), [12] magnetic nanoparticles, [13] and Copper-based nanoparticles [14] were all demonstrated to have excellent catalytic activity towards luminol CL reaction. Several groups have found that meta
Data Loading...
