Electrochemical Study of Interfacially Synthesized Polycarbazole with Different Oxidants

Kumar, Ashish; Tiwari, Madhu; Prakash, Rajiv

doi:10.1002/celc.201500318

Cited by 14 publications

(9 citation statements)

References 66 publications

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“…Since them, many research have been focus on the development of 3,6 disubstitued carbazoles, taking advantage of the high reactivity of 3,6 positions [ 148 ]. In this context, linear and hyperbranched 3,6-carbazole derivatives present excellent redox activity, photorefractive and nonlinear optical properties [ 106 , 149 ]. These properties make them good candidates as materials for organic light-emitting diodes (OLEDs).…”

Section: Applicationmentioning

confidence: 99%

“… EIS responses, in form of Nyquist plots, for PCz–APS and PCz– KMnO 4 in the presence of 0.1 m TEATFB and 0.1 m TEA-p-TSA in acetonitrile at different electrodes: ( I ) GC and ( II ) Pt. Reprinted with permission from Kumar et al [ 106 ]. Copyright (2015) Wiley.…”

Section: Figurementioning

confidence: 99%

“…The comparison between the synthesized polymers indicates that PCz-APS presents better electron transfer kinetics compared to PCz-KMnO4 at either electrode (GC) or (Pt). A comparative study in terms of the structural, thermal, morphological, and electrochemical properties of polycarbazole (PCz) synthesized by controlled interfacial polymerization using two different oxidizing agents, ammonium persulfate (APS) and potassium permanganate (KMnO 4 ) has been reported by Kumar et al [106]. The polymerization was carried out in the dark at room temperature in dichloromethane for 24 h, with good yields for PCz-APS and PCz-KMnO 4 , 82% and 75%, respectively.…”

Section: Chemical Polymerization Of Carbazoles and Its Derivativesmentioning

confidence: 99%

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Polycarbazole and Its Derivatives: Synthesis and Applications. A Review of the Last 10 Years

et al. 2020

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Polycarbazole and its derivatives have been extensively used for the last three decades, although the interest in these materials briefly decreased. However, the increasing demand for conductive polymers for several applications such as light emitting diodes (OLEDs), capacitators or memory devices, among others, has renewed the interest in carbazole-based materials. In this review, the synthetic routes used for the development of carbazole-based polymers have been summarized, reviewing the main synthetic methodologies, namely chemical and electrochemical polymerization. In addition, the applications reported in the last decade for carbazole derivatives are analysed. The emergence of flexible and wearable electronic devices as a part of the internet of the things could be an important driving force to renew the interest on carbazole-based materials, being conductive polymers capable to respond adequately to requirement of these devices.

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Section: Applicationmentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

Section: Chemical Polymerization Of Carbazoles and Its Derivativesmentioning

confidence: 99%

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Polycarbazole and Its Derivatives: Synthesis and Applications. A Review of the Last 10 Years

et al. 2020

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“…Electrochemical impedence spectroscopy (EIS) is a transfer function method in which an input sinusoidal AC wave is used to perturbed the system and the response is measured as output particularly at the electrode-electrolyte interface, caused by electrochemical electron/ion transfer 34 , 35 . Generally the EIS response for a system under investigation is represented in the form of Nyquist plot.…”

Section: Quantitative Detection Of Psamentioning

confidence: 99%

A comparative Study of Aptasensor Vs Immunosensor for Label-Free PSA Cancer Detection on GQDs-AuNRs Modified Screen-Printed Electrodes

Srivastava

Nirala

Srivastava

et al. 2018

Sci Rep

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Label-free and sensitive detection of PSA (Prostate Specific Antigen) is still a big challenge in the arena of prostate cancer diagnosis in males. We present a comparative study for label-free PSA aptasensor and PSA immunosensor for the PSA-specific monoclonal antibody, based on graphene quantum dots-gold nanorods (GQDs-AuNRs) modified screen-printed electrodes. GQDs-AuNRs composite has been synthesized and used as an electro-active material, which shows fast electron transfer and catalytic property. Aptamer or anti-PSA has immobilized onto the surface of modified screen printed electrodes. Three techniques are used simultaneously, viz. cyclic voltammetry (CV), differential pulse voltammetry (DPV) and electrochemical impedence spectroscopy (EIS) to investigate the analytical performance of both PSA aptasensor and PSA immunosensor with its corresponding PSA antigen. Under optimum conditions, both sensors show comparable results with an almost same limit of detection (LOD) of 0.14 ng mL−1. The results developed with aptasensor and anti-PSA is also checked through the detection of PSA in real samples with acceptable results. Our study suggests some advantages of aptasensor in terms of better stability, simplicity and cost effectiveness. Further our present work shows enormous potential of our developed sensors for real application using voltammetric and EIS techniques simultaneous to get reliable detection of the disease.

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“…The presence of the stretching band at 1227 cm −1 is attributed to C=N and the peak at 1316 cm −1 is attributed to C-H out of plane bending vibration of aromatic ring. The sharp band at 1444 cm −1 may be due to ring stretching vibration of carbazole [27]. The bands at 918 cm −1 and 1598 cm −1 are assigned to =CH out of plane and stretching mode of aromatic alkene respectively [21,25].…”

Section: Ftir Analysismentioning

confidence: 97%

Structural, Optical and Electrical Conductivity Studies in Polycarbazole and Its Metal Oxide Nano Composites

Talari

Raghavendra

Malge

2021

Preprint

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Polycarbazole (PCz) has been synthesized by chemical oxidation method using APS as an oxidizing agent and PCz/CuO and PCz/Fe2O3 nanocomposites by in situ polymerization method for different wt% of CuO and Fe2O3 at room temperature. XRD patterns confirmed crystalline nature of samples. FTIR indicated strong interaction between PCz and nano fillers. The morphological and optical absorption studies were carried out using SEM and UV-Vis respectively. Addition of CuO or Fe2O3 to PCz decreased its direct and indirect band gaps. However, band gap showed a small change with dopant contents up to 30%. Urbach energy decreased with the addition of dopants. But Urbach energy of the composites increased with increasing dopants content from 10 to 30%. DC conductivity of PCz and its nanocomposites has been measured by following two probe technique in the temperature range from 300 K to 423 K. he conductivity of both the nanocomposites is found to be less than the pure PCz and it is found to increase with wt% of CuO or Fe2O3 as the case may be. The activation energy has been determined by fitting Arrhenius expression to the dc conductivity data at high temperature. The activation energy of polycarbazole is determined to be less than that of the composites. In both the composites, activation energy decreased and conductivity increased with the increase of dopant content.

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Electrochemical Study of Interfacially Synthesized Polycarbazole with Different Oxidants

Cited by 14 publications

References 66 publications

Polycarbazole and Its Derivatives: Synthesis and Applications. A Review of the Last 10 Years

Polycarbazole and Its Derivatives: Synthesis and Applications. A Review of the Last 10 Years

A comparative Study of Aptasensor Vs Immunosensor for Label-Free PSA Cancer Detection on GQDs-AuNRs Modified Screen-Printed Electrodes

Structural, Optical and Electrical Conductivity Studies in Polycarbazole and Its Metal Oxide Nano Composites

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