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Rajan L, Shabeeba A, Sidheekha MP, Ismail YA. Reaction Induced Conformational Change in Polyindole: Polyindole/PVA Film as Biomimetic Sensors of Temperature and Electrical Energetic Conditions. Chem Asian J 2023; 18:e202300742. [PMID: 37789616 DOI: 10.1002/asia.202300742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 09/26/2023] [Accepted: 09/26/2023] [Indexed: 10/05/2023]
Abstract
Conducting polymers can mimic the sensing characteristics of biological muscles through utilizing their unique electrochemical reactions. As these reactions occur, alterations in composition prompt changes in biomimetic properties, such as shifts in volume, brought about by the insertion of anions and solvent molecules, resulting in conformational movements. Similar to biological muscles, these electrochemical reaction senses the working variables affecting the reaction rate, through the same two connecting wires. The influence of working temperature and electrical energetic condition on the conformational movements of polyindole manifested as the cooperative actuation of the polymer chain is verified here using a polyindole-coated polyvinyl alcohol (PIN/PVA) film. Cyclic voltammetric (CV) studies revealed that the extent of reaction of polyindole varies linearly with temperature and scan rate. The logarithmic dependence of redox charge obtained from coulovoltammogram with inverse of temperature further proved the temperature sensing characteristics and the influence of temperature on the cooperative actuation of the film. The conformational relaxation increases as the temperature increases through hosting higher number of counter anions with the solvent molecule. The extension of the redox reaction was found to decrease as the scan rate increases. The double logarithmic relation between the consumed redox charge and the scan rate has proved that the electrical energetic condition can influence the conformational movement in a reversible manner. It is also verified from Chronopotentiometric (CP) studies that the consumed electrical energy during the reaction varies linearly with the change in temperature. The results suggest that the PIN/PVA film can act as a biomimetic macro molecular sensor of working temperature and electrical energetic condition as biological muscles do.
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Affiliation(s)
- Lijin Rajan
- Advanced Materials Research Center, Department of Chemistry, University of Calicut, Thenhipalam, Kerala, 673635, India) E-mail
| | - Aranhikundan Shabeeba
- Advanced Materials Research Center, Department of Chemistry, University of Calicut, Thenhipalam, Kerala, 673635, India) E-mail
| | - Madari Palliyalil Sidheekha
- Advanced Materials Research Center, Department of Chemistry, University of Calicut, Thenhipalam, Kerala, 673635, India) E-mail
| | - Yahya A Ismail
- Advanced Materials Research Center, Department of Chemistry, University of Calicut, Thenhipalam, Kerala, 673635, India) E-mail
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Joshy D, Narendranath SB, Ismail YA, Periyat P. Recent progress in one dimensional TiO 2 nanomaterials as photoanodes in dye-sensitized solar cells. Nanoscale Adv 2022; 4:5202-5232. [PMID: 36540125 PMCID: PMC9724613 DOI: 10.1039/d2na00437b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 09/26/2022] [Indexed: 06/17/2023]
Abstract
Exploiting the vast possibilities of crystal and electronic structural modifications in TiO2 based nanomaterials creatively attracted the scientific community to various energy applications. A dye sensitised solar cell, which converts photons into electricity, is considered a viable solution for the generation of electricity. TiO2 nanomaterials were well accepted as photoanode materials in dye-sensitized solar cells, and possess non-toxicity, high surface area, high electron transport rates, fine tuneable band gap, high resistance to photo corrosion and optimum pore size for better diffusion of dye and electrolyte. This review focuses on various aspects of TiO2 nanomaterials as photoanodes in dye-sensitized solar cells. TiO2 photoanode modification via doping and morphological variations were discussed in detail. The impact of various morphologies on the design of TiO2 photoanodes was particularly stressed.
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Affiliation(s)
- Deepak Joshy
- Department of Chemistry, University of Calicut Kerala 673635 India
| | | | - Yahya A Ismail
- Department of Chemistry, University of Calicut Kerala 673635 India
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Thadathil A, Thacharakkal D, Ismail YA, Periyat P. Polyindole-Derived Nitrogen-Doped Graphene Quantum Dots-Based Electrochemical Sensor for Dopamine Detection. Biosensors (Basel) 2022; 12:1063. [PMID: 36551030 PMCID: PMC9775058 DOI: 10.3390/bios12121063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Revised: 11/11/2022] [Accepted: 11/16/2022] [Indexed: 06/17/2023]
Abstract
The sensitive monitoring of dopamine levels in the human body is of utmost importance since its abnormal levels can cause a variety of medical and behavioral problems. In this regard, we report the synthesis of nitrogen-doped graphene quantum dots (N-GQDs) from polyindole (PIN) via a facile single-step hydrothermal synthetic strategy that can act as an efficient electrochemical catalyst for the detection of dopamine (DA). The average diameter of N-GQDs was ∼5.2 nm and showed a C/N atomic ratio of ∼2.75%. These N-GQDs exhibit a cyan fluorescence color under irradiation from a 365 nm lamp, while PIN has no characteristic PL. The presence of richly N-doped graphitic lattices in the N-GQDs possibly accounts for the improved catalytic activity of N-GQDs/GCE towards electrocatalytic DA detection. Under optimum conditions, this novel N-GQDs-modified electrode exhibits superior selectivity and sensitivity. Moreover, it could detect as low as 0.15 nM of DA with a linear range of 0.001-1000 µM. In addition, the outstanding sensing attributes of the detector were extended to the real samples as well. Overall, our findings evidence that N-GQDs-based DA electrochemical sensors can be synthesized from PIN precursor and could act as promising EC sensors in medical diagnostic applications.
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Affiliation(s)
- Anjitha Thadathil
- Department of Chemistry, University of Calicut, Malappuram 673635, India
| | - Dipin Thacharakkal
- Department of Chemistry, University of Calicut, Malappuram 673635, India
| | - Yahya A. Ismail
- Department of Chemistry, University of Calicut, Malappuram 673635, India
| | - Pradeepan Periyat
- Department of Environmental Studies, Kannur University, Kannur 670567, India
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Rajan L, Sidheekha MP, Shabeeba A, Unnikrishnan SC, Ismail YA. Reactive sensing capability towards the working electrical and chemical conditions of poly (aniline –co–o-toluidine) copolymers. Res Chem Intermed 2022. [DOI: 10.1007/s11164-022-04814-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Shabeeba A, Sidheekha MP, Rajan L, Ismail YA. Flexible hybrid film of polypyrrole incorporated chitosan as a biomimetic multistep electrochemical sensor of working temperature: a potentiodynamic study. RSC Adv 2022; 12:31911-31922. [DOI: 10.1039/d2ra05482e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 10/21/2022] [Indexed: 11/10/2022] Open
Abstract
A flexible polypyrrole/hydrogel hybrid film composed of macromolecular electrochemical machines is considered as a model material of the intracellular matrix of ectothermic muscle cells capable of sensing ambient thermal energy.
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Affiliation(s)
- Aranhikundan Shabeeba
- Advanced Materials Research Center, Department of Chemistry, University of Calicut, Thenhipalam, Kerala 673635, India
| | - Madari Palliyalil Sidheekha
- Advanced Materials Research Center, Department of Chemistry, University of Calicut, Thenhipalam, Kerala 673635, India
| | - Lijin Rajan
- Advanced Materials Research Center, Department of Chemistry, University of Calicut, Thenhipalam, Kerala 673635, India
| | - Yahya A. Ismail
- Advanced Materials Research Center, Department of Chemistry, University of Calicut, Thenhipalam, Kerala 673635, India
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Joshy D, Chakko S, Ismail YA, Periyat P. Surface basicity mediated rapid and selective adsorptive removal of Congo red over nanocrystalline mesoporous CeO 2. Nanoscale Adv 2021; 3:6704-6718. [PMID: 36132658 PMCID: PMC9419567 DOI: 10.1039/d1na00412c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 09/18/2021] [Indexed: 06/16/2023]
Abstract
Herein we first report surface basicity mediated rapid and selective adsorptive removal of organic pollutants over nanocrystalline mesoporous CeO2. The role of surface features in controlling the selectivity and efficiency of adsorption is well known. Nevertheless, the possibility of tuning the adsorption capacity and selectivity of adsorbents through their surface characteristics remains less explored. In this work, the surface basicity of mesoporous CeO2 nanoparticles was improved by Er3+ doping under two different reaction conditions: via sol-gel and sol-hydrothermal methods. The nature and amount of surface basic sites were determined with the help of CO2 temperature programmed desorption (TPD). The adsorption capacity and selectivity of four different CeO2 samples were investigated using Congo red, methyl orange, and methylene blue as the model pollutants. From the adsorption studies, Er3+ doped CeO2 synthesized by the sol-gel method, having the highest amount of surface basic sites, proved to be the most efficient and highly selective adsorbent among the four developed variants of CeO2 towards Congo red. According to the proposed mechanism, surface basicity can be employed as a controlling parameter capable of tuning the adsorption capacity as well as the selectivity of CeO2 towards organic pollutants.
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Affiliation(s)
- Deepak Joshy
- Department of Chemistry, University of Calicut Kerala India 673635
| | - Seena Chakko
- Department of Chemistry, University of Calicut Kerala India 673635
| | - Yahya A Ismail
- Department of Chemistry, University of Calicut Kerala India 673635
| | - Pradeepan Periyat
- Department of Chemistry, University of Calicut Kerala India 673635
- Department of Environmental Studies, Kannur University Kerala India
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Thadathil A, Ismail YA, Periyat P. Ternary 3D reduced graphene oxide/Ni 0.5Zn 0.5Fe 2O 4/polyindole nanocomposite for supercapacitor electrode application. RSC Adv 2021; 11:35828-35841. [PMID: 35492780 PMCID: PMC9043229 DOI: 10.1039/d1ra04946a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 10/21/2021] [Indexed: 12/12/2022] Open
Abstract
A facile two-step strategy has been reported for the preparation of a ternary 3D reduced graphene oxide/Ni0.5Zn0.5Fe2O4/polyindole nanocomposite (GNP) and this composite is applied as an electrode material for supercapacitor applications. Remarkably, Ni0.5Zn0.5Fe2O4 nanoparticles (NZF) decorated on reduced graphene oxide (GN2) are achieved by a facile hydrothermal method followed by coating with polyindole (PIN) through an in situ emulsion polymerization process. The structure, porosity, morphology, and thermal stability of the resulting ternary GNP hybrid material were characterized via X-ray diffraction (XRD), Raman spectroscopy, Brunauer–Emmett–Teller (BET) surface area measurements, transmission electron microscopy (TEM), and thermogravimetric analysis (TGA). This combination of hybrid material has a favorable mesoporous structure that enables high exposure of active sites for fast electron transport for supercapacitor applications. We demonstrate here that the ternary GNP hybrid electrode material is capable of delivering a favorable specific capacitance of ∼320 F g−1 at 0.3 A g−1 within the potential range from −0.1 to 1 V, with desirable rate stability and excellent cycling stability in the three-electrode system. Furthermore, an asymmetric supercapacitor (ASC) of a two-electrode configuration was fabricated using 3D RGO and GNP as the negative and positive electrodes, respectively. Such a device manifests a favourable Csp of 48.9 F g−1 at 0.5 A g−1 and retains stability of 84% even after 2000 cycles. This ASC device exhibits a significant energy density of 16.38 W h kg−1 at a power density of 1784 W kg−1. The synergistic effects of pseudo and double layer capacitive contributions from PIN and GN2 make this ternary GNP hybrid electrode material of great promise in supercapacitor applications. A facile two-step strategy has been reported for the preparation of a ternary 3D reduced graphene oxide/Ni0.5Zn0.5Fe2O4/polyindole nanocomposite (GNP) and this composite is applied as an electrode material for supercapacitor applications.![]()
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Affiliation(s)
| | - Yahya A Ismail
- Department of Chemistry, University of Calicut Kerala India 673635
| | - Pradeepan Periyat
- Department of Chemistry, University of Calicut Kerala India 673635 .,Department of Environmental Studies, Kannur University Kerala India 670567
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Ismail YA, Martinez JG, Otero TF. Polyurethane microfibrous mat templated polypyrrole: Preparation and biomimetic reactive sensing capabilities. J Electroanal Chem (Lausanne) 2014. [DOI: 10.1016/j.jelechem.2014.01.025] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Ismail YA, Mohammad F, Ahmad A. Synthesis, Electrical Conductivity, Spectral and Thermal Stability Studies on Poly(aniline-co-o-nitroaniline). Journal of Macromolecular Science, Part A 2011. [DOI: 10.1080/10601325.2011.614871] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Kang MS, Shin MK, Ismail YA, Shin SR, Kim SI, Kim H, Lee H, Kim SJ. The fabrication of polyaniline/single-walled carbon nanotube fibers containing a highly-oriented filler. Nanotechnology 2009; 20:085701. [PMID: 19417462 DOI: 10.1088/0957-4484/20/8/085701] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Highly uniform composite nanofibers composed of well-oriented single-walled carbon nanotubes (SWCNTs) wrapped in a conducting polymer have been fabricated using electrospinning. Water-soluble polyaniline (WS-PANI) was used as a conducting material to improve the processability during electrospinning. The WS-PANI formed a homogeneous dispersion with the SWCNTs and poly(vinyl alcohol), and good compatibility of the WS-PANI with the SWCNTs was demonstrated by data showing interactions between two components and the wrapping of the SWCNTs by the WS-PANI. Through transmission electron microscopy, atomic force microscopy, and polarized Raman spectroscopy, we confirmed that the WS-PANI plays an important role as a conducting polymer matrix to achieve aligned SWCNTs in composite nanofibers and to form uniform nanofibers.
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Affiliation(s)
- Mi Sun Kang
- Center for Bio-Artificial Muscle and Department of Biomedical Engineering, Hanyang University, Seoul 133-791, Korea
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Ismail YA, Ahmad A, Mohammad F. Synthesis, Electrical, Electronic and Charge Transport Properties of Poly(aniline‐co‐p‐toluidine). Journal of Macromolecular Science, Part A 2008. [DOI: 10.1080/10601320802168868] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Zaqqa MQ, Ismail YA, Khatib AM, Bahou YG, Al-Daoud HM, Al-Saad MM, Al-Mousa EN. Effect of oral mecobalamin treatment on chest pain in patients with cobalamin deficiency and no evidence of coronary artery disease. A randomized, placebo-controlled trial. Saudi Med J 2005; 26:1144-5. [PMID: 16047075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023] Open
Affiliation(s)
- Munir Q Zaqqa
- Department of Cardiology, Jordan University Hospital, PO Box 13075, Amman 11942, Jordan.
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