Optical fibre based non-enzymatic glucose sensing over Cu2+-doped polyaniline hybrid matrix

Abstract

The opto-chemical glucose sensing over cupric ion doped polyaniline (Cu +2 /PANI) hybrid polymer matrix coated glass rod based optode has been demonstrated.Cu +2 /PANI hybrid matrix was synthesized by in situ chemical polymerization of intrinsically functionalized aniline. Furthermore, developed optode has been explored for direct oxidisation of glucose on Cu +2 /PANI hybrid matrix for non-enzymatic glucose sensing employing O-dianisidine indicator system. The proposed glucose sensor works well in range of 50 mg/dL-200 mg/dL with response time of 15 s in artificial as well as in biological samples along with 40 days of lifespan.

Designing Cu2+ as a Partial Substitution of Protons in Polyaniline Emeraldine Salt: Room-Temperature-Recoverable H2S Sensing Properties and Mechanism Study

“…45 Except the common characteristic peaks of PANI, two other novel peaks are observed: the one located at 1048 cm −1 is attributed to the pseudo-protonation of Cu 2+ at the imine nitrogen of PANI and the other one at 581 cm −1 is aligned to the PANI-Cu 2+ interaction. 42,46 The abovementioned results indicate that Cu 2+ has been successfully doped into PANI as a partial proton substitution.…”

“…As can be seen, the adsorption peaks of PANI brought about by the CC stretching vibration of the quinone ring, CC stretching vibration of the benzene ring, C−N stretching vibration of quinone rings, and C−N stretching vibration of the benzene ring are ascribed to 1566, 1485, 1294, and 1240 cm −1 , respectively. 42,43 Characteristic peaks observed at 1372 and 705 cm −1 correspond to the characteristic PANI's vibration mode of CN and rocking vibration mode of −NH 2 , respectively. 44 Furthermore, the sharp peak appearing at 1122 cm −1 is assigned to the −N vibration, and the peak around 797 cm −1 is due to the out-of-plane C−H bending vibrations of PANI.…”

One-pot solvothermal synthesis of lotus-leaf like Ni7S6/CoNi2S4 hybrid on carbon fabric toward comprehensive high-performance flexible non-enzymatic glucose sensor and supercapacitor

“…Meanwhile, a conjugated system based on the π electron on the benzene ring and the unpaired electron on the nitrogen atom enhances the adsorption capacity of DTU to CF. 45,49,50 Thus, the nuclei produced by TU and metal ions (M 2+ , M = Ni, Co) were difficult to anchor on the surface of CF. Thus, when only TU was applied as the sulphur source or M DTU was low, CF always got rid of the Ni–Co–S coatings, which are presented as fissures, pores, or holes (Fig.…”

Progress in Conductive Polyaniline-Based Nanocomposites for Biomedical Applications: A Review

“…166 3D nanostructured hydrogels based on platinum NPs-PANI were also fabricated for the determination of glucose (Figure 12B). 167 Other types of nanostructures such as gold NPs, 168 carbon nanotubes, 169 and copper NPs 170 have been exploited for the detection of the glucose level. Apart from enzyme biosensors, PANI has been applied for the detection of biomolecules.…”