Mesoporous Iron Oxide Synthesized Using Poly(styrene-b-acrylic acid-b-ethylene glycol) Block Copolymer Micelles as Templates for Colorimetric and Electrochemical Detection of Glucose

• DOI: 10.1021/acsami.7b13835
• Publication Date: 2017-11-29T18:01:58Z
• Authors: Shunsuke Tanaka; Yusuf Valentino K...; Ripon Bhattacharjee; Md Nazmul Islam; Rina Nakahata; Nawfel Abdullah; Shin-ichi Yusa; Nam-Trung Nguyen; Muhammad J. A. Sh...; Yusuke Yamauchi; Md. Shahriar A. H...
• Keywords: Template; Acrylic acid

Herein, we report the soft-templated preparation of mesoporous iron oxide using an asymmetric poly(styrene-b-acrylic acid-b-ethylene glycol) (PS-b-PAA-b-PEG) triblock copolymer. This polymer forms a micelle consisting PS core, PAA shell, and PEG corona in aqueous solutions, which can serve as soft template. The obtained at optimized calcination temperature 400 °C exhibited average pore diameter 39 nm, with large specific surface area volume 86.9 m2 g–1 0.218 cm3 g–1, respectively. as-prepared materials showed intrinsic peroxidase-like activities toward catalytic oxidation 3,3′,5,5′-tertamethylbenzidine (TMB) presence hydrogen peroxide (H2O2). mimetic feature was further exploited to develop simple colorimetric (naked-eye) electrochemical assay for detection glucose. Both our (naked-eye UV–vis) assays estimated glucose concentration be linear range from 1.0 μM 100 limit μM. We envisage that integrated platform H2O2 will find wide applications developing various biosensors field personalized medicine, food-safety detection, environmental-pollution control, agro-biotechnology.