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Ardra M, Gayathri R, Swetha SV, Mohamed Imran P, Nagarajan S. Tweaking the Non-Volatile Write-Once-Read-Many-Times (WORM) Memory using Donor-Acceptor Architecture with Isatin as Core Acceptor. Chempluschem 2024:e202400018. [PMID: 38446710 DOI: 10.1002/cplu.202400018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 03/04/2024] [Accepted: 03/06/2024] [Indexed: 03/08/2024]
Abstract
Organic memory devices have attracted attention because they promise flexible electronics, low manufacturing costs, and compatibility with large-scale integration. A series of new D-A architectures were synthesized employing different donor groups and the isatin moiety as the acceptor through Suzuki-Miyaura coupling reactions. Strong intramolecular interactions were observed in the synthesized compounds, further corroborated by an optimal bandgap. The SEM investigation confirmed good molecular ordering and superior thin film surface coverage. All the compounds demonstrated notable binary Write-Once-Read-Many-Times (WORM) memory behaviour. The threshold switching voltage for these D-A systems ranged from -0.79 to -2.37 V, with the compound having isobutyl substituent showing the lowest threshold voltage and maximum ON/OFF ratio of 102, thus outperforming others. The combined effects of charge transfer and charge trapping are responsible for the resistive switching mechanism prevailing in these systems. The alterations in D-A molecules that affect molecular packing, thin film morphology, and, finally, the memory performance of the active layer are highlighted in this work.
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Affiliation(s)
- Murali Ardra
- Organic Electronics Division, Department of Chemistry, Central University of Tamil Nadu, Thiruvarur, 610005, India
| | - Ramesh Gayathri
- Organic Electronics Division, Department of Chemistry, Central University of Tamil Nadu, Thiruvarur, 610005, India
| | - Senthilkumar V Swetha
- Organic Electronics Division, Department of Chemistry, Central University of Tamil Nadu, Thiruvarur, 610005, India
| | | | - Samuthira Nagarajan
- Organic Electronics Division, Department of Chemistry, Central University of Tamil Nadu, Thiruvarur, 610005, India
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2
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Verma N, Tyagi R, Khanna A, Malviya M, Sagar R. Electro-organic synthesis of isatins and hydrazones through C-N cross-coupling and C(sp 2)-H/C(sp 3)-H functionalization. Org Biomol Chem 2023; 21:6707-6714. [PMID: 37563999 DOI: 10.1039/d3ob01128c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/12/2023]
Abstract
An efficient and unique approach to synthesize isatin (indole-2,3-dione) from 2-aminoacetophenone under electrochemical conditions supported by I2-DMSO through C-N cross-coupling and C(sp2)-H/C(sp3)-H functionalization is presented. This synthetic method spans a wide range of substituted 2-aminoacetophenone substrates. The use of iodine as a promoter and shorter reaction times produced good to very good yields of isatin derivatives, which is a significant improvement over the reaction in a batch process. Further, hydrazones of isatin were synthesized by using hydrazine hydrate which produces electrochemically active molecules, namely isatin-hydrazones. The hydrazones of acetophenone were also obtained using the same reaction protocol. Additionally, the effect of increasing scan rate studied using cyclic voltammetry shows that the process followed a diffusion-controlled mechanism.
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Affiliation(s)
- Neetu Verma
- Department of Chemistry, IIT (Banaras Hindu University), Varanasi-221005, India.
| | - Rajdeep Tyagi
- Glycochemistry Laboratory, School of Physical Sciences, Jawaharlal Nehru University, New Delhi-110067, India.
| | - Ashish Khanna
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi-221005, India
| | - Manisha Malviya
- Department of Chemistry, IIT (Banaras Hindu University), Varanasi-221005, India.
| | - Ram Sagar
- Glycochemistry Laboratory, School of Physical Sciences, Jawaharlal Nehru University, New Delhi-110067, India.
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi-221005, India
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3
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Jakóbczyk P, Dettlaff A, Skowierzak G, Ossowski T, Ryl J, Bogdanowicz R. Enhanced stability of electrochemical performance of few-layer black phosphorus electrodes by noncovalent adsorption of 1,4-diamine-9,10-anthraquinone. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Monnappa AB, Manjunatha JG, Bhatt AS, Malini K. Sodium Dodecyl Sulfate Modified Carbon Nano Tube Paste Electrode for Sensitive Cyclic Voltammetry Determination of Isatin. Adv Pharm Bull 2021; 11:111-119. [PMID: 33747858 PMCID: PMC7961235 DOI: 10.34172/apb.2021.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 04/13/2020] [Accepted: 04/15/2020] [Indexed: 11/17/2022] Open
Abstract
Purpose: Isatin (IS) is a synthetically significant heterocyclic moiety with an influential pharmacodynamic indole nucleus and hence the electrocatalytic property of has been investigated. Methods: The electrochemical analysis was demonstrated by cyclic voltammetry (CV) in the potential window of 0.2 V to 1.4 V using sodium dodecyl sulfate (SDS) modified carbon nano tube paste electrode (SDSMCNTPE) over a pH range of 6 to 8.5 in 0.2 M phosphate buffer solution (PBS). Surface morphology was studied by using Field emission-scanning electron microscopy (FESEM). Results: The CV study discloses that under ideal condition oxidation of IS arises at a potential of 0.970 V accompanied with an exceptional stability, selectivity and sensitivity for the resultant SDSMCNTPE contrasting to bare carbon nano tube paste electrode (BCNTPE). Individual parameters like electrode surface area, effect of surfactant, detection limit, simultaneous detection of IS and resorcinol (RC) were studied at a scan rate of 0.1 V/s. Scan rate study uncovers the process is diffusion controlled. The oxidation peak current amplified linearly with the surge in concentration of IS under ideal condition. Detection limit (LOD) and limit of quantification (LOQ) in the solution of optimum pH (7.5) at a scan rate of 0.100V/s is 2.4×10-7 M and 8.2 × 10-7 M respectively. Conclusion: The proposed electrode portrays excellent repeatability, reproducibility and reliability to resistant electrode fouling.
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Affiliation(s)
- Amrutha Balliamada Monnappa
- Department of Chemistry, FMKMC College, Madikeri, Constituent College of Mangalore University, Karnataka, India.,Department of Chemistry, N.M.A.M. Institute of Technology, (Visvesvaraya Technological University, Belgavi) Nitte, 574110, Udupi District, Karnataka, India
| | | | - Aarti Sripathi Bhatt
- Department of Chemistry, N.M.A.M. Institute of Technology, (Visvesvaraya Technological University, Belgavi) Nitte, 574110, Udupi District, Karnataka, India
| | - Kodi Malini
- Department of Chemistry, St Philomina College, Puttur, Dakshina Kannada, Karnataka, India
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Colorimetric ‘naked eye’ sensor for fluoride ion based on isatin hydrazones via hydrogen bond formation: Design, synthesis and characterization ascertained by Nuclear Magnetic Resonance, Ultraviolet–Visible, Computational and Electrochemical studies. INORG CHEM COMMUN 2020. [DOI: 10.1016/j.inoche.2020.108216] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Abdussalam A, Guan Y, Xu G. Amplified Anodic Electrogenerated Chemiluminescence of Tris(2,2′‐bipyridyl)ruthenium(II) for the Sensitive Detection of Isatin. ChemElectroChem 2020. [DOI: 10.1002/celc.201902148] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Abubakar Abdussalam
- State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of Sciences 5625 Renmin Street Changchun 130022 Jilin China
- School of Applied Chemistry and EngineeringUniversity of Science and Technology of China Hefei 230026 Anhui China
- Faculty of Science, Department of ChemistryBayero University PMB 3011 Kano Nigeria
| | - Yiran Guan
- State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of Sciences 5625 Renmin Street Changchun 130022 Jilin China
| | - Guobao Xu
- State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of Sciences 5625 Renmin Street Changchun 130022 Jilin China
- School of Applied Chemistry and EngineeringUniversity of Science and Technology of China Hefei 230026 Anhui China
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Silva BN, Sales Junior PA, Romanha AJ, Murta SM, Lima CH, Albuquerque MG, D'Elia E, Rodrigues JG, Ferreira VF, Silva FC, Pinto AC, Silva BV. Synthesis of New Thiosemicarbazones and Semicarbazones Containing the 1,2,3-1H-triazole-isatin Scaffold: Trypanocidal, Cytotoxicity, Electrochemical Assays, and Molecular Docking. Med Chem 2019; 15:240-256. [DOI: 10.2174/1573406414666180912120502] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 07/09/2018] [Accepted: 08/22/2018] [Indexed: 01/17/2023]
Abstract
Background:
Chagas disease, also known as American trypanosomiasis, is classified as
one of the 17 most important neglected diseases by the World Health Organization. The only drugs
with proven efficacy against Chagas disease are benznidazole and nifurtimox, however both show
adverse effects, poor clinical efficacy, and development of resistance. For these reasons, the search
for new effective chemical entities is a challenge to research groups and the pharmaceutical industry.
Objective:
Synthesis and evaluation of antitrypanosomal activities of a series of thiosemicarbazones
and semicarbazones containing 1,2,3-1H triazole isatin scaffold.
Method:
5&'-(4-alkyl/aryl)-1H-1,2,3-triazole-isatins were prepared by Huisgen 1,3-dipolar
cycloaddition and the thiosemicarbazones and semicarbazones were obtained by the 1:1 reactions
of the carbonylated derivatives with thiosemicarbazide and semicarbazide hydrochloride,
respectively, in methanol, using conventional reflux or microwave heating. The compounds were
assayed for in vitro trypanocidal activity against Trypanosoma cruzi, the aetiological agent of
Chagas disease. Beyond the thio/semicarbazone derivatives, isatin and triazole synthetic
intermediates were also evaluated for comparison.
Results:
A series of compounds were prepared in good yields. Among the 37 compounds evaluated,
18 were found to be active, in particular thiosemicarbazones containing a non-polar saturated
alkyl chain (IC50 = 24.1, 38.6, and 83.2 &µM; SI = 11.6, 11.8, and 14.0, respectively). To further
elucidate the mechanism of action of these new compounds, the redox behaviour of some active
and inactive derivatives was studied by cyclic voltammetry. Molecular docking studies were also
performed in two validated protein targets of Trypanosoma cruzi, i.e., cruzipain (CRZ) and phosphodiesterase
C (TcrPDEC).
Conclusion:
A class of thio/semicarbazones structurally simple and easily accessible was synthesized.
Compounds containing thiosemicarbazone moieties showed the best results in the series, being
more active than the corresponding semicarbazones. Our results indicated that the activity of
these compounds does not originate from an oxidation-reduction pathway but probably from the
interactions with trypanosomal enzymes.
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Affiliation(s)
- Bianca N.M. Silva
- Instituto de Quimica (IQ), Universidade Federal do Rio de Janeiro (UFRJ), Av. Athos da Silveira Ramos, 149, Cidade Universitaria, Ilha do Fundao, 21949-900, Rio de Janeiro, RJ, Brazil
| | - Policarpo A. Sales Junior
- Centro de Pesquisas Rene Rachou (CPqRR), Fundacao Oswaldo Cruz (FIOCRUZ), Av. Augusto de Lima, 1715, Barro Preto, 30190-002, Belo Horizonte, MG, Brazil
| | - Alvaro J. Romanha
- Centro de Pesquisas Rene Rachou (CPqRR), Fundacao Oswaldo Cruz (FIOCRUZ), Av. Augusto de Lima, 1715, Barro Preto, 30190-002, Belo Horizonte, MG, Brazil
| | - Silvane M.F. Murta
- Centro de Pesquisas Rene Rachou (CPqRR), Fundacao Oswaldo Cruz (FIOCRUZ), Av. Augusto de Lima, 1715, Barro Preto, 30190-002, Belo Horizonte, MG, Brazil
| | - Camilo H.S. Lima
- Faculdade de Farmacia (FF), Universidade Federal Fluminense (UFF), R. Mario Viana, 523, Santa Rosa, 24241- 000, Niteroi, RJ, Brazil
| | - Magaly G. Albuquerque
- Instituto de Quimica (IQ), Universidade Federal do Rio de Janeiro (UFRJ), Av. Athos da Silveira Ramos, 149, Cidade Universitaria, Ilha do Fundao, 21949-900, Rio de Janeiro, RJ, Brazil
| | - Eliane D'Elia
- Instituto de Quimica (IQ), Universidade Federal do Rio de Janeiro (UFRJ), Av. Athos da Silveira Ramos, 149, Cidade Universitaria, Ilha do Fundao, 21949-900, Rio de Janeiro, RJ, Brazil
| | - José G.A. Rodrigues
- Instituto de Quimica (IQ), Universidade Federal do Rio de Janeiro (UFRJ), Av. Athos da Silveira Ramos, 149, Cidade Universitaria, Ilha do Fundao, 21949-900, Rio de Janeiro, RJ, Brazil
| | - Vitor F. Ferreira
- Instituto de Quimica (IQ), Universidade Federal Fluminense (UFF), 24020-141 Niteroi, RJ, Brazil
| | - Fernando C. Silva
- Instituto de Quimica (IQ), Universidade Federal Fluminense (UFF), 24020-141 Niteroi, RJ, Brazil
| | - Angelo C. Pinto
- Instituto de Quimica (IQ), Universidade Federal do Rio de Janeiro (UFRJ), Av. Athos da Silveira Ramos, 149, Cidade Universitaria, Ilha do Fundao, 21949-900, Rio de Janeiro, RJ, Brazil
| | - Bárbara V. Silva
- Instituto de Quimica (IQ), Universidade Federal do Rio de Janeiro (UFRJ), Av. Athos da Silveira Ramos, 149, Cidade Universitaria, Ilha do Fundao, 21949-900, Rio de Janeiro, RJ, Brazil
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Mayuri P, Huang ST, Mani V, Kumar AS. A new organic redox species-indole tetraone trapped MWCNT modified electrode prepared by in-situ electrochemical oxidation of indole for a bifunctional electrocatalysis and simultaneous flow injection electroanalysis of hydrazine and hydrogen peroxide. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.02.107] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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9
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Isatin 1-morpholinomethyl, 1-hydroxymethyl, 1-methyl, and their halogenated derivatives, redox behaviour. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2017.05.030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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10
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Ensch M, Maldonado VY, Swain GM, Rechenberg R, Becker MF, Schuelke T, Rusinek CA. Isatin Detection Using a Boron-Doped Diamond 3-in-1 Sensing Platform. Anal Chem 2018; 90:1951-1958. [PMID: 29298039 DOI: 10.1021/acs.analchem.7b04045] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Boron-doped diamond (BDD) is a promising electrochemical tool that exhibits excellent chemical sensitivity and stability. These intrinsic advantages coupled with the material's vast microfabrication flexibility make BDD an attractive sensing device. In this study, two different 3-in-1 BDD electrode sensors were fabricated, characterized, and investigated for their capability to detect isatin, an anxiogenic indole that possesses anticonvulsant activity. Each device was comprised of a working, reference, and auxiliary electrode, all made of BDD. Two different working electrode geometries were studied, a 2 mm diameter macroelectrode (MAC) and a microelectrode array (MEA). The BDD quasi-reference electrode was studied by measuring its potential against a traditional Ag/AgCl reference electrode. While the potential shifted as a function of solution pH, a miniscule potential drift was observed when holding the solution pH constant. Specifically, the BDD quasi-reference electrode had a potential of -0.2 V (vs Ag/AgCl) in a pH 7 solution, and this remained stable for a 30-h time period. For the detection of isatin, solutions were analyzed using both sensors in pH 7.4 phosphate buffered saline (PBS). Using the MEA sensor, the limit of detection (LOD, (3σ)/m) for isatin was found to be 0.04 μM; an increase to 0.22 μM was observed with the MAC sensor. These results were compared to those obtained from UV-vis spectrophotometry, where a 0.57 μM LOD was observed. The feasibility for use in a complex sample matrix was also examined by completing measurements in urine simulant. The results presented herein indicate that both 3-in-1 BDD sensors are applicable at low limits of detection with potential application as an electrochemical detector for chromatographic methods.
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Affiliation(s)
- Mary Ensch
- Fraunhofer USA, Inc. Center for Coatings and Diamond Technologies, East Lansing, Michigan 48824-1226, United States.,Michigan State University , Department of Chemical Engineering, East Lansing, Michigan 48824-1226, United States
| | - Vanessa Y Maldonado
- Escuela Politecnica Nacional (EPN) , Department of Chemical Engineering, Quito, 170517, Ecuador.,Michigan State University , Department of Chemistry, East Lansing, Michigan 48824-1226, United States
| | - Greg M Swain
- Michigan State University , Department of Chemistry, East Lansing, Michigan 48824-1226, United States
| | - Robert Rechenberg
- Fraunhofer USA, Inc. Center for Coatings and Diamond Technologies, East Lansing, Michigan 48824-1226, United States
| | - Michael F Becker
- Fraunhofer USA, Inc. Center for Coatings and Diamond Technologies, East Lansing, Michigan 48824-1226, United States
| | - Thomas Schuelke
- Fraunhofer USA, Inc. Center for Coatings and Diamond Technologies, East Lansing, Michigan 48824-1226, United States.,Michigan State University , Department of Chemical Engineering, East Lansing, Michigan 48824-1226, United States.,Michigan State University , Department Electrical and Computer Engineering, East Lansing, Michigan 48824-1226, United States
| | - Cory A Rusinek
- Fraunhofer USA, Inc. Center for Coatings and Diamond Technologies, East Lansing, Michigan 48824-1226, United States
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Jarošová R, Sanchez S, Haubold L, Swain GM. Isatin Analysis Using Flow Injection Analysis with Amperometric Detection - Comparison of Tetrahedral Amorphous Carbon and Diamond Electrode Performance. ELECTROANAL 2017. [DOI: 10.1002/elan.201700272] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Romana Jarošová
- Charles University; Department of Analytical Chemistry; Prague 128 4 Czech Republic
- Department of Chemistry, 578 S. Shaw Lane; Michigan State University; East Lansing, Michigan 48824-1226 United States
| | - Simon Sanchez
- Department of Biological Sciences, 1 Camino Santa Maria; St. Mary's University; San Antonio, Texas 78228 United States
| | - Lars Haubold
- Fraunhofer Center for Coatings and Diamond Technologies, 1449 Engineering Research Center; Michigan State University; East Lansing, MI 48823
| | - Greg M. Swain
- Fraunhofer Center for Coatings and Diamond Technologies, 1449 Engineering Research Center; Michigan State University; East Lansing, MI 48823
- Department of Chemistry, 578 S. Shaw Lane; Michigan State University; East Lansing, Michigan 48824-1226 United States
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13
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Shabbir M, Akhter Z, Ahmad I, Ahmed S, Shafiq M, Mirza B, McKee V, Munawar KS, Ashraf AR. Schiff base triphenylphosphine palladium (II) complexes: Synthesis, structural elucidation, electrochemical and biological evaluation. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.04.003] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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14
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Nayak DS, Shetti NP. Electrochemical oxidation of provitamin B5, d-panthenol and its analysis in spiked human urine. J Anal Sci Technol 2016. [DOI: 10.1186/s40543-016-0092-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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15
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Shetti NP, Nayak DS, Bukkitgar SD. Electrooxidation of antihistamine drug methdilazine and its analysis in human urine and blood samples. ACTA ACUST UNITED AC 2016. [DOI: 10.1080/23312009.2016.1153274] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Nagaraj P. Shetti
- Department of Chemistry, K. L. E. Institute of Technology, Gokul, Hubballi 580030, Karnataka, India
| | - Deepti S. Nayak
- Department of Chemistry, K. L. E. Institute of Technology, Gokul, Hubballi 580030, Karnataka, India
| | - Shikandar D. Bukkitgar
- Department of Chemistry, K. L. E. Institute of Technology, Gokul, Hubballi 580030, Karnataka, India
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16
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Electrochemical behavior of isometamidium and its determination in milk at a SWCNT/AuNP-modified electrode. FOOD ANAL METHOD 2015. [DOI: 10.1007/s12161-015-0376-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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17
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Electrochemical and photovoltaic study of sunset yellow and tartrazine dyes. MONATSHEFTE FUR CHEMIE 2015. [DOI: 10.1007/s00706-015-1425-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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18
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Sarıgüney AB, Saf AÖ, Coşkun A. A newly synthesized thiazole derivative as a fluoride ion chemosensor: naked-eye, spectroscopic, electrochemical and NMR studies. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 128:575-582. [PMID: 24691372 DOI: 10.1016/j.saa.2014.02.032] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2013] [Revised: 02/04/2014] [Accepted: 02/07/2014] [Indexed: 06/03/2023]
Abstract
2,3-Indoledione 3-thiosemicarbazone (TSCI) and a novel compound 3-(2-(4-(4-phenoxyphenyl)thiazol-2-yl)hydrazono)indolin-2-one (FTHI) were synthesized with high yield and characterized by spectroscopic techniques. The complexation behaviors of TSCI and FTHI for various anionic species (F(-), Cl(-), Br(-), I(-), NO2(-), NO3(-), BzO(-), HSO4(-), ClO4(-)) in CH3CN were investigated and compared by UV-vis spectroscopy, cyclic voltammetry and (1)H NMR titration techniques. FTHI showed high degree of selectivity for fluoride over other anions. This selectivity could be easily observed by the naked eye, indicating that FTHI is potential colorimetric sensor for fluoride anion.
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Affiliation(s)
| | - Ahmet Özgür Saf
- Chemistry Department, Necmettin Erbakan University, 42099 Meram, Konya, Turkey
| | - Ahmet Coşkun
- Chemistry Department, Necmettin Erbakan University, 42099 Meram, Konya, Turkey.
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20
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Paul BK, Ray D, Guchhait N. Unraveling the binding interaction and kinetics of a prospective anti-HIV drug with a model transport protein: results and challenges. Phys Chem Chem Phys 2013; 15:1275-87. [DOI: 10.1039/c2cp42539d] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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22
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Saroj MK, Sharma N, Rastogi RC. Photophysical study of some 3-benzoylmethyleneindol-2-ones and estimation of ground and excited states dipole moments from solvatochromic methods using solvent polarity parameters. J Mol Struct 2012. [DOI: 10.1016/j.molstruc.2011.12.043] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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23
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Lopes IC, Santos PVF, Diculescu VC, de Araújo MCU, Oliveira-Brett AM. Sorbic Acid and Its Degradation Products: Electrochemical Characterization. ANAL LETT 2012. [DOI: 10.1080/00032719.2011.644738] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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24
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Naik KM, Nandibewoor ST. Electrochemical Behavior of Chalcone at a Glassy Carbon Electrode and Its Analytical Applications. ACTA ACUST UNITED AC 2012. [DOI: 10.4236/ajac.2012.39086] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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25
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Doménech A, Doménech-Carbó MT, Vázquez de Agredos-Pascual ML. From Maya Blue to “Maya Yellow”: A Connection between Ancient Nanostructured Materials from the Voltammetry of Microparticles. Angew Chem Int Ed Engl 2011; 50:5741-4. [DOI: 10.1002/anie.201100921] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2011] [Indexed: 11/10/2022]
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26
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From Maya Blue to “Maya Yellow”: A Connection between Ancient Nanostructured Materials from the Voltammetry of Microparticles. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201100921] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Karaaslan C, Suzen S. Electrochemical Behavior of Biologically Important Indole Derivatives. INTERNATIONAL JOURNAL OF ELECTROCHEMISTRY 2011. [DOI: 10.4061/2011/154804] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Voltammetric techniques are most suitable to investigate the redox properties of a new drug. Use of electrochemistry is an important approach in drug discovery and research as well as quality control, drug stability, and determination of physiological activity. The indole nucleus is an essential element of a number of natural and synthetic products with significant biological activity. Indole derivatives are the well-known electroactive compounds that are readily oxidized at carbon-based electrodes, and thus analytical procedures, such as electrochemical detection and voltammetry, have been developed for the determination of biologically important indoles. This paper explains some of the relevant and recent achievements in the electrochemistry processes and parameters mainly related to biologically important indole derivatives in view of drug discovery and analysis.
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Affiliation(s)
- Cigdem Karaaslan
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Ankara University, Tandogan 06100, Ankara, Turkey
| | - Sibel Suzen
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Ankara University, Tandogan 06100, Ankara, Turkey
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He JB, Ma GH, Chen JC, Yao Y, Wang Y. Voltammetry and spectroelectrochemistry of solid indigo dispersed in carbon paste. Electrochim Acta 2010. [DOI: 10.1016/j.electacta.2010.03.064] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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31
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Chemiluminescence determination of indole derivatives in human body fluids and soil by flow injection analysis using potassium permanganate. Mikrochim Acta 2009. [DOI: 10.1007/s00604-009-0257-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Mandal P, Ganguly T. Fluorescence Spectroscopic Characterization of the Interaction of Human Adult Hemoglobin and Two Isatins, 1-Methylisatin and 1-Phenylisatin: A Comparative Study. J Phys Chem B 2009; 113:14904-13. [DOI: 10.1021/jp9062115] [Citation(s) in RCA: 100] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Paulami Mandal
- Department of Spectroscopy, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Tapan Ganguly
- Department of Spectroscopy, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
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Gupta AK, Sindal RS. A comparative study of electrochemical reduction of isatin and its synthesized Schiff bases at HMDE. J CHEM SCI 2009. [DOI: 10.1007/s12039-009-0040-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Pontinha A, Oliveira S, Oliveira-Brett A. Electrochemical Oxidation of Metolazone at a Glassy Carbon Electrode. ELECTROANAL 2008. [DOI: 10.1002/elan.200804352] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Bulut VN, Ozdes D, Bekircan O, Gundogdu A, Duran C, Soylak M. Carrier element-free coprecipitation (CEFC) method for the separation, preconcentration and speciation of chromium using an isatin derivative. Anal Chim Acta 2008; 632:35-41. [PMID: 19100880 DOI: 10.1016/j.aca.2008.10.073] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2008] [Revised: 10/24/2008] [Accepted: 10/29/2008] [Indexed: 10/21/2022]
Abstract
A new, simple, rapid and sensitive separation, preconcentration and speciation procedure for chromium in environmental liquid and solid samples has been established. The present speciation procedure for Cr(III) and Cr(VI) is based on combination of carrier element-free coprecipitation (CEFC) and flame atomic absorption spectrometric (FAAS) determinations. In this method a newly synthesized organic coprecipitant, 5-chloro-3-[4-(trifluoromethoxy) phenylimino]indolin-2-one (CFMEPI), was used without adding any carrier element for coprecipitation of chromium(III). After reduction of chromium(VI) by concentrated H(2)SO(4) and ethanol, the procedure was applied for the determination of total chromium. Chromium(VI) was calculated as the difference between the amount of total chromium and chromium(III). The optimum conditions for coprecipitation and speciation processes were investigated on several commonly tested experimental parameters, such as pH of the solution, amount of coprecipitant, sample volume, etc. No considerable interference was observed from the other investigated anions and cations, which may be found in natural water samples. The preconcentration factor was found to be 40. The detection limit for chromium(III) corresponding to three times the standard deviation of the blank (N=10) was found 0.7 microg L(-1). The present procedure was successfully applied for speciation of chromium in several liquid and solid environmental samples. In order to support the accuracy of the method, the certified reference materials (CRM-TMDW-500 Drinking Water and CRM-SA-C Sandy Soil C) were analyzed, and standard APDC-MIBK liquid-liquid extraction method was performed. The results obtained were in good agreement with the certified values.
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Affiliation(s)
- Volkan Numan Bulut
- Department of Chemistry, Karadeniz Technical University, Faculty of Arts & Sciences, 61080 Trabzon, Turkey
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Oliveira SCB, Diculescu VC, Palleschi G, Compagnone D, Oliveira-Brett AM. Electrochemical oxidation of ochratoxin A at a glassy carbon electrode and in situ evaluation of the interaction with deoxyribonucleic acid using an electrochemical deoxyribonucleic acid-biosensor. Anal Chim Acta 2007; 588:283-91. [PMID: 17386822 DOI: 10.1016/j.aca.2007.02.029] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2006] [Revised: 02/06/2007] [Accepted: 02/13/2007] [Indexed: 10/23/2022]
Abstract
Ochratoxin A (OTA) is a fungal metabolite that occurs in foods, beverages, animal tissues, human blood and presents carcinogenic, teratogenic and nephrotoxic properties. This study concerns the redox properties of OTA using electrochemical techniques which have the potential for providing insights into the biological redox reactions of this molecule. The in situ evaluation of the OTA interaction with DNA using a DNA-electrochemical biosensor is also reported. The oxidation of OTA is an irreversible process proceeds with the transfer of one electron and one proton in a diffusion-controlled mechanism. The diffusion coefficient of OTA was calculated in pH 7 phosphate buffer to be D(O) = 3.65x10(-6) cm2 s(-1). The oxidation of OTA is also pH dependent for electrolytes with pH<7 and involves the formation of a main oxidation product which adsorbs strongly at the GCE surface undergoing reversible oxidation. In alkaline electrolytes OTA undergoes chemical deprotonation, the oxidation involving only the transfer of one electron. The electrochemical dsDNA-biosensor was also used to evaluate the possible interaction between OTA and DNA. The experiments have clearly proven that OTA interacts and binds to dsDNA strands immobilized onto a GCE surface, but no evidence of DNA-damage caused by OTA was obtained.
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Affiliation(s)
- S C B Oliveira
- Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade de Coimbra, 3004-535 Coimbra, Portugal
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