Synthesis and Application of Graphdiyne Oxide-Polyurethane Nanocomposite Yield a Highly Sensitive Non-Enzyme Glucose Sensor

Abstract

Graphdiyne is a new carbon nanomaterial after graphene. It has excellent electrical properties and can be chemically modified. Here, a graphdiyne oxide-polyurethane nanocomposite (GDYO-PU) was synthesized by chemical coupling and characterized with Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM) and scanning electron microscopy (SEM). A GDYO-PU modified glassy carbon electrode (GCE) was applied as a non-enzymatic glucose electrode. The electrochemical property of the GDYO-PU electrode was investigated by cyclic voltammetry (CV), differential pulse voltammetry (DPV) and amperometry in the presence of [Fe(CN)6]3−/4− in 0.1 M NaOH alkaline solution and at the bias potential of 0.2 V. Fast electro-deposition was observed for the electrochemical deposition of Fe(CN)6 3−/4− on the GDYO-PU electrode surface. Under the optimized conditions, the calibration curve of the nano electrode is linear over the concentration range of 0.2 to 6.4 μM, with high sensitivity of 377 μAmM−1cm−2 as well as a low detection limit (LOD) of 0.1 μM (S/N = 3). The GDYO-PU nanocomposite based non-enzyme glucose electrode is therefore promising for analysis of tiny volume of biological samples, which meets the requirement of minimal invasive measurement in clinic and family care.

Graphynes and Graphdiynes for Energy Storage and Catalytic Utilization: Theoretical Insights into Recent Advances

“…A graphdiyne oxide−polyurethane (GDYO-PU) nanocomposite showing long-term room temperature stability, a linear detection range, and a nanomolar detection limit was successfully synthesized and used to detect glucose molecules. 62 In another study, a novel self-powered biosensing platform composed of an enzymatic biofuel cell (EBFC) (Figure 42d) on a GDY substrate and a capacitor as an auxiliary signal amplifying device showed an excellent miRNA detection performance with a sensitivity of 2.75 μA pM −1 and a detection limit of 0.034 fM. 278 Further, a dopamine (DA) sensor was developed using GDY and shortened multiwalled carbon nanotubes (S-MWCNTs).…”

“…Current research trends mainly focus on the critical issue of the global energy crisis and the development of new technologies that can lead to the invention of new materials for highly efficient energy production and storage. GYF are kinds of desirable candidates for a variety of energy technologies, including electrocatalysis, − photocatalysis, − solar energy conversion, , and hydrogen storage, − and devices such as ion batteries, − supercapacitors, , sensors, − and purifiers. , However, the potential of GYF-based materials beyond energy conversion and storage technologies has not yet been explored. Since most of the theoretically predicted functional GYF have not yet been synthesized, we are still in the nascent stage of GYF research and utilization.…”

Biosensing Efficiency of Nanocarbon-Reinforced Polyacrylonitrile Nanofibrous Matrices

“…Polymers that have been utilized as support materials in composites with carbonaceous nanofillers include poly (urethane) (PU), 23,24 poly (vinyl alcohol) (PVA), 25,26 poly (vinyl pyrrolidone) (PVP), 27 poly (acrylonitrile) (PAN), 28,29 poly (ethylene oxide) (PEO), 30 poly (methyl methacrylate) (PMMA), 31,32 nylon 33,34 etc. Significant enhancement of modulus, strength and electrical properties have been reported as a result.…”