Biosurfactant tailored synthesis of porous polypyrrole nanostructures: A facile approach towards CO2 adsorption and dopamine sensing

Adhikari, Arpita; De, S. S.; Halder, Arijit; Pattanayak, Sutanuka; Dutta, Kingshuk; Mondal, Dipankar; Rana, Dipak; Ghosh, Ria; Bera, Nirmal Kumar; Chattopadhyay, Sanatan; Chakraborty, Mukut; Ghoshal, Debajyoti; Chattopadhyay, Dipankar

doi:10.1016/j.synthmet.2018.09.005

Cited by 22 publications

(19 citation statements)

References 66 publications

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“…Semicircle diameter (R ct ) is an indication for the electron-transfer resistance, which is the main criterion for measurement of electrical conductivity. Thus, the electrical conductivity of a material can be calculated via the formula [ 60 ] σ = L/(R·A) where L and A are the thickness and geometric surface area of the sample, respectively; σ is the electrical conductivity (S·cm −1 ), and R is the resistance (Ω) of the substrate. The EIS experimental data are well-fitted into appropriate equivalent circuit models ( Figure 8 b), where the circuit (I) and (II) were considered for calculating the electrical conductivity of PANi and modified PANi with GO-ITN hybrid flakes, respectively.…”

Section: Resultsmentioning

confidence: 99%

Superior X-ray Radiation Shielding Effectiveness of Biocompatible Polyaniline Reinforced with Hybrid Graphene Oxide-Iron Tungsten Nitride Flakes

et al. 2020

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X-ray radiation is a harmful carcinogenic electromagnetic source that can adversely affect the health of living species and deteriorate the DNA of cells, thus it’s vital to protect vulnerable sources from them. To address this flaw, the conductive polymeric structure of polyaniline (PANi) was reinforced with diverse filler loadings (i.e., 25 wt % and 50 wt %) of hybrid graphene oxide-iron tungsten nitride (ITN) flakes toward attenuation of X-ray beams and inhabitation of microorganisms’ growth. Primary characterizations confirmed the successful decoration of graphene oxide (GO) with interconnected and highly dense structure of iron tungsten nitride with a density of about 24.21 g·cm−3 and reinforcement of PANi with GO-ITN. Additionally, the outcome of evaluations showed the superior performance of developed shields, where a shield with 1.2 mm thickness containing 50 wt % GO-ITN showed 131.73% increase in the electrical conductivity (compared with neat PANi) along with 78.07%, 57.12%, and 44.99% decrease in the amplitude of the total irradiated X-ray waves at 30, 40, and 60 kVp tube voltages, respectively, compared with control X-ray dosage. More importantly, the developed shields not only showed non-toxic nature and improved the viability of cells, but also completely removed the selected microorganisms at a concentration of 1000 µg·mL−1.

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Section: Resultsmentioning

confidence: 99%

Superior X-ray Radiation Shielding Effectiveness of Biocompatible Polyaniline Reinforced with Hybrid Graphene Oxide-Iron Tungsten Nitride Flakes

et al. 2020

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“…Furthermore, polypyrrole is easily synthesized and shows higher conductivity in comparison with other conducting polymers [ 84 ]. The amine group (–NH–) on the pyrrole ring enhances the capability of this polymer for biomolecular sensing [ 85 ] and provides a non-sensitive character to interferences in the solution [ 86 ].…”

Section: Electrochemical Sensors Based On Conducting Polymersmentioning

confidence: 99%

Electrochemical Sensors Based on Conducting Polymers for the Aqueous Detection of Biologically Relevant Molecules

et al. 2021

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Electrochemical sensors appear as low-cost, rapid, easy to use, and in situ devices for determination of diverse analytes in a liquid solution. In that context, conducting polymers are much-explored sensor building materials because of their semiconductivity, structural versatility, multiple synthetic pathways, and stability in environmental conditions. In this state-of-the-art review, synthetic processes, morphological characterization, and nanostructure formation are analyzed for relevant literature about electrochemical sensors based on conducting polymers for the determination of molecules that (i) have a fundamental role in the human body function regulation, and (ii) are considered as water emergent pollutants. Special focus is put on the different types of micro- and nanostructures generated for the polymer itself or the combination with different materials in a composite, and how the rough morphology of the conducting polymers based electrochemical sensors affect their limit of detection. Polypyrroles, polyanilines, and polythiophenes appear as the most recurrent conducting polymers for the construction of electrochemical sensors. These conducting polymers are usually built starting from bifunctional precursor monomers resulting in linear and branched polymer structures; however, opportunities for sensitivity enhancement in electrochemical sensors have been recently reported by using conjugated microporous polymers synthesized from multifunctional monomers.

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“…Sodium cholate was used as a structure regulator for the fabrication of polypyrrole nanoparticles (Figure 7) for applications in dopamine sensing (Adhikari et al, 2018). It was found that sodium cholate enhanced the performance of graphene-based sensors, which F I G U R E 6 Schematic of the synthesis of bile salt (BS) capped Au nanoparticles and colorimetric sensing of DNA (Chandirasekar et al, 2011).…”

Section: Polypyrrole Graphene and Carbon Nanotubebased Biosensorsmentioning

confidence: 99%

“…It was found that sodium cholate enhanced the performance of graphene-based sensors, which F I G U R E 6 Schematic of the synthesis of bile salt (BS) capped Au nanoparticles and colorimetric sensing of DNA (Chandirasekar et al, 2011). Reproduced with permission, Copyright 2011 American Chemical Society F I G U R E 7 Fabrication of PPy particles for biosensors using sodium cholate template (Adhikari et al, 2018). Reproduced with permission, Copyright 2018 Elsevier were used for the sensing of acetaminophen (Brownson, Metters, Kampouris, & Banks, 2011).…”

Section: Polypyrrole Graphene and Carbon Nanotubebased Biosensorsmentioning

confidence: 99%

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Application of bile acids for biomedical devices and sensors

2020

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Bile acids (BAs) are physiologically important biosurfactants (Singh, Metrani, Shivanagoudra, Jayaprakasha, & Patil, 2019), which solubilize cholesterol, lipids, proteins, fatty acids, monoglycerides and vitamins in a human body. The strong solubilization power of BAs is related to their amphiphilic chemical structure, which is fundamentally different from the structures of other surfactants. As a general feature, natural BAs molecules have a steroid nucleus with concave hydrophilic and convex hydrophobic sides, containing OH and methyl groups, respectively (Figure 1a and Table 1). The chemical structures of BAs contain a short hydrocarbon chain with COOH or SO 3 H end groups. As a result, dissociated BAs molecules exhibit anionic properties in solutions. Properties of BAs are influenced by the number of OH groups bonded to a steroid core and nature of anionic groups. Modifying the hydroxyl or carboxyl groups of BAs creates a diverse set of BA-based compounds, maintaining some original properties and introducing novel properties as well. The unique distribution of hydrophilic and hydrophobic domains allows these molecules to self-organize into supramolecular assemblies in water. BAs salts form mixed micelles (Figure 1b) with various water-insoluble molecules and facilitate their dissolution. Moreover, BAs allow dispersion of hydrophobic materials, such as carbon nanotubes (Ata, Poon, Syed, Milne, & Zhitomirsky, 2018). The bifacial amphipathic BAs molecules act as compatibilizing agents between the water-insoluble

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Biosurfactant tailored synthesis of porous polypyrrole nanostructures: A facile approach towards CO2 adsorption and dopamine sensing

Cited by 22 publications

References 66 publications

Superior X-ray Radiation Shielding Effectiveness of Biocompatible Polyaniline Reinforced with Hybrid Graphene Oxide-Iron Tungsten Nitride Flakes

Superior X-ray Radiation Shielding Effectiveness of Biocompatible Polyaniline Reinforced with Hybrid Graphene Oxide-Iron Tungsten Nitride Flakes

Electrochemical Sensors Based on Conducting Polymers for the Aqueous Detection of Biologically Relevant Molecules

Application of bile acids for biomedical devices and sensors

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