A novel biomimetic nanoenzyme based on ferrocene derivative polymer NPs coated with polydopamine

• Published in: Talanta (Oxford) Vol. 195; pp. 265 - 271
• Main Authors: Yao, Jiayi, Wu, Tengteng, Sun, Yan, Ma, Zhangyan, Liu, Meiling, Zhang, Youyu, Yao, Shouzhuo
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier B.V 01.04.2019
• Subjects: ambient temperature; analytical chemistry; Benzidines - chemistry; Benzothiazoles - chemistry; Biomimetics; Catalysis; coatings; dicarboxylic acids; dopamine; energy conservation; Ferrocene dicarboxylic acid; Ferrocene polymer NPs covered with PDA; Ferrous Compounds - chemistry; Fourier transform infrared spectroscopy; hydrogen peroxide; infrared radiation; magnetic materials; Metallocenes - chemistry; methanol; Nanocomposites - chemistry; nanoparticles; Nanoparticles - chemistry; peroxidase; Peroxidase - chemistry; Peroxidase-like activity, Catalysis detection; Phenylenediamines - chemistry; Photocatalytic polymerization; photostability; polymers; Polymers - chemistry; solvents; Sulfonic Acids - chemistry; transmission electron microscopes; transmission electron microscopy; ultraviolet-visible spectroscopy; Ferrocene dicarboxylic acid; Peroxidase-like activity, Catalysis detection; Photocatalytic polymerization; Ferrocene polymer NPs covered with PDA
• ISSN: 0039-9140; 1873-3573; 1873-3573
• DOI: 10.1016/j.talanta.2018.11.069

In this paper, ferrocene derivative polymer nanoparticles (FcP NPs) with uniform size and good photostability was synthesized using 1,1′-ferrocene dicarboxylic acid as precursor and methanol as solvent. FcP NPs-PDA was further obtained by coating of polydopamine (PDA) on FcP NPs in tris-HCl (pH=8.5) buffer solution at room temperature in the presence of dopamine (DA). The structure and morphology of FcP NPs and FcP NPs-PDA were characterized by transmission electron microscope (TEM), ultraviolet-visible spectroscopy (UV–Vis), and infrared radiation (FT-IR). The as-prepared FcP NPs-PDA showed better peroxidase-like activity than FcP NPs, which could catalyze the chromogenic reaction of peroxidase substrate TMB, OPD and ABTS. Based on the high peroxidase-like property of FcP NPs-PDA, a sensitive and convenient means to detect H2O2 has been proposed with TMB as the substrate, which displays wide linear range of 10–600 μM and 600 μM-4 mM with low detection limit of 5 μΜ. Compared with other Fe-containing NPs, such as magnetic materials and noble metal@Fe bimetallic NPs, the preparation approach for FcP NPs-PDA is simple, time and energy saving and environment friendly. This mild and simple synthesis route of FcP NPs-PDA will provide new ideas for the preparation of non-noble metal-based peroxidase-like nanomaterials and widen the applications in the fields of catalytic and analytical chemistry. [Display omitted] •Ferrocene derivative polymer NPs functionalized with PDA was developed.•The FcP NPs-PDA showed good peroxidase-like activity.•This study is the first attempt to prepare ferrocene derivatives nanoparticles for colorimetric.•The preparation for FcP NPs-PDA is simple, time and energy saving and environment friendly.•This study can expand the application of ferrocene derivatives in the field beyond electrocatalysis.