Optoelectrical and photoluminescence quenching properties of poly( N- vinyl carbazole)-polypyrrole/reduced graphene oxide nanocomposites

Rahman, Muhammad Shafiqur; Hammed, Wasiu Adebayo; Yahyah, Rosiyah; Mahmud, Habibun Nabi Muhammad Ekramul

doi:10.1016/j.synthmet.2017.02.020

Cited by 7 publications

(4 citation statements)

References 34 publications

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“…These shifts in the peaks confirm again the intense interactions between the polymer derivative and the modified GO. Analogous behavior of the shift of the Raman bands has previously been reported for poly(N-vinyl carbazole)/PPy/rGO composites [37].…”

Section: Resultssupporting

confidence: 79%

Grafting of Polypyrrole-3-carboxylic Acid to the Surface of Hexamethylene Diisocyanate-Functionalized Graphene Oxide

Luceño

Díez‐Pascual

2019

Nanomaterials

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A polypyrrole-carboxylic acid derivative (PPy-COOH) was covalently anchored on the surface of hexamethylene diisocyanate (HDI)-modified graphene oxide (GO) following two different esterification approaches: activation of the carboxylic acids of the polymer by carbodiimide, and conversion of the carboxylic groups to acyl chloride. Microscopic observations revealed a decrease in HDI-GO layer thickness for the sample prepared via the first strategy, and the heterogeneous nature of the grafted samples. Infrared and Raman spectroscopies corroborated the grafting success, demonstrating the emergence of a peak associated with the ester group. The yield of the grafting reactions (31% and 42%) was roughly calculated from thermogravimetric analysis, and it was higher for the sample synthesized via formation of the acyl chloride-functionalized PPy. The grafted samples showed higher thermal stability (~30 and 40 °C in the second decomposition stage) and sheet resistance than PPy-COOH. They also exhibited superior stiffness and strength both at 25 and 100 °C, and the reinforcing efficiency was approximately maintained at high temperatures. Improved mechanical performance was attained for the sample with higher grafting yield. The developed method is a valuable approach to covalently attach conductive polymers onto graphenic nanomaterials for application in flexible electronics, fuel cells, solar cells, and supercapacitors.

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Section: Resultssupporting

confidence: 79%

Grafting of Polypyrrole-3-carboxylic Acid to the Surface of Hexamethylene Diisocyanate-Functionalized Graphene Oxide

Luceño

Díez‐Pascual

2019

Nanomaterials

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“…A broader exothermic peak exists at 511.59 °C, probably due to the oxidation of PPy, rGO, and other materials after melting. 53…”

Section: Resultsmentioning

confidence: 99%

“…A broader exothermic peak exists at 511.59 °C, probably due to the oxidation of PPy, rGO, and other materials after melting. 53 The contact angle of the four points was uniformly tested at different positions of the membrane, and the maximum and minimum values were taken to determine the contact angle range before and after the modification of the ceramic membrane. Fig.…”

Section: Dsc and Wettability Analysis Of Membrane Materialsmentioning

confidence: 99%

The efficient treatment of pickling wastewater using a self-assembled in situ polymerized ceramic membrane with graphene/carbon nanotubes/polypyrrole

Wang

Zhang

Zong

et al. 2023

Environ. Sci.: Water Res. Technol.

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“…In recent years, graphene has extensively been used for fabrication of various materials such as optoelectronics , fuel cells , electronics , solar cells , energy storage and conversion (supercapacitors) , and sensors/biosensors because of its excellent physical and chemical properties: high surface area , strong mechanical strength , and good thermal and electric conductivity .…”

Section: Introductionmentioning

confidence: 99%

A Novel Enzymatic Glucose Biosensor and Nonenzymatic Hydrogen Peroxide Sensor Based on (3‐Aminopropyl) Triethoxysilane Functionalized Reduced Graphene Oxide

2017

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In the present study, a novel enzymatic glucose biosensor using glucose oxidase (GOx) immobilized into (3‐aminopropyl) triethoxysilane (APTES) functionalized reduced graphene oxide (rGO‐APTES) and hydrogen peroxide sensor based on rGO‐APTES modified glassy carbon (GC) electrode were fabricated. Nafion (Nf) was used as a protective membrane. For the characterization of the composites, Fourier transform infrared spectroscopy (FTIR), X‐ray powder diffractometer (XRD), and transmission electron microscopy (TEM) were used. The electrochemical properties of the modified electrodes were investigated using electrochemical impedance spectroscopy, cyclic voltammetry, and amperometry. The resulting Nf/rGO‐APTES/GOx/GC and Nf/rGO‐APTES/GC composites showed good electrocatalytical activity toward glucose and H2O2, respectively. The Nf/rGO‐APTES/GC electrode exhibited a linear range of H2O2 concentration from 0.05 to 15.25 mM with a detection limit (LOD) of 0.017 mM and sensitivity of 124.87 μA mM−1 cm−2. The Nf/rGO‐APTES/GOx/GC electrode showed a linear range of glucose from 0.02 to 4.340 mM with a LOD of 9 μM and sensitivity of 75.26 μA mM−1 cm−2. Also, the sensor and biosensor had notable selectivity, repeatability, reproducibility, and storage stability.

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Optoelectrical and photoluminescence quenching properties of poly( N- vinyl carbazole)-polypyrrole/reduced graphene oxide nanocomposites

Cited by 7 publications

References 34 publications

Grafting of Polypyrrole-3-carboxylic Acid to the Surface of Hexamethylene Diisocyanate-Functionalized Graphene Oxide

Grafting of Polypyrrole-3-carboxylic Acid to the Surface of Hexamethylene Diisocyanate-Functionalized Graphene Oxide

The efficient treatment of pickling wastewater using a self-assembled in situ polymerized ceramic membrane with graphene/carbon nanotubes/polypyrrole

A Novel Enzymatic Glucose Biosensor and Nonenzymatic Hydrogen Peroxide Sensor Based on (3‐Aminopropyl) Triethoxysilane Functionalized Reduced Graphene Oxide

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