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Dhibar S, Mohan A, Karmakar K, Mondal B, Roy A, Babu S, Garg P, Ruidas P, Bhattacharjee S, Roy S, Bera A, Ray SJ, Predeep P, Saha B. Novel supramolecular luminescent metallogels containing Tb(iii) and Eu(iii) ions with benzene-1,3,5-tricarboxylic acid gelator: advancing semiconductor applications in microelectronic devices. RSC Adv 2024; 14:12829-12840. [PMID: 38645531 PMCID: PMC11027726 DOI: 10.1039/d3ra07903a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Accepted: 04/04/2024] [Indexed: 04/23/2024] Open
Abstract
A novel strategy was employed to create supramolecular metallogels incorporating Tb(iii) and Eu(iii) ions using benzene-1,3,5-tricarboxylic acid (TA) as a gelator in N,N-dimethylformamide (DMF). Rheological analysis demonstrated their mechanical robustness under varying stress levels and angular frequencies. FESEM imaging revealed a flake-like hierarchical network for Tb-TA and a rod-shaped architecture for Eu-TA. EDX analysis confirmed essential chemical constituents within the metallogels. FT-IR, PXRD, Raman spectroscopy, and thermogravimetric analysis assessed their gelation process and material properties, showing semiconducting characteristics, validated by optical band-gap measurements. Metal-semiconductor junction-based devices integrating Al metal with Tb(iii)- and Eu(iii)-metallogels exhibited non-linear charge transport akin to a Schottky diode, indicating potential for advanced electronic device development. Direct utilization of benzene-1,3,5-tricarboxylic acid and Tb(iii)/Eu(iii) sources underscores their suitability as semiconducting materials for device fabrication. This study explores the versatile applications of Tb-TA and Eu-TA metallogels, offering insights for material science researchers.
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Affiliation(s)
- Subhendu Dhibar
- Colloid Chemistry Laboratory, Department of Chemistry, The University of Burdwan Golapbag Burdwan 713104 West Bengal India +91 7001575909 +91 9476341691
| | - Aiswarya Mohan
- Laboratory for Molecular Photonics and Electronics (LAMP), Department of Physics, National Institute of Technology Calicut Calicut 673603 Kerala India
| | - Kripasindhu Karmakar
- Colloid Chemistry Laboratory, Department of Chemistry, The University of Burdwan Golapbag Burdwan 713104 West Bengal India +91 7001575909 +91 9476341691
| | - Bijnaneswar Mondal
- Department of Chemistry, Guru Ghasidas Vishwavidyalaya Bilaspur 495009 Chhattisgarh India
| | - Arpita Roy
- Department of Physics, Indian Institute of Technology Patna Bihar 801106 India
| | - Saranya Babu
- Laboratory for Molecular Photonics and Electronics (LAMP), Department of Physics, National Institute of Technology Calicut Calicut 673603 Kerala India
| | - Parul Garg
- Department of Physics, Indian Institute of Technology Jammu J&K 181221 India
| | - Pradip Ruidas
- Department of Chemistry, Kazi Nazrul University Asansol 713303 West Bengal India
| | - Subham Bhattacharjee
- Department of Chemistry, Kazi Nazrul University Asansol 713303 West Bengal India
| | - Sanjay Roy
- Department of Chemistry, School of Science, Netaji Subhas Open University, Kalyani Regional Centre Kolkata 741251 India
| | - Ashok Bera
- Department of Physics, Indian Institute of Technology Jammu J&K 181221 India
| | - Soumya Jyoti Ray
- Department of Physics, Indian Institute of Technology Patna Bihar 801106 India
| | - Padmanabhan Predeep
- Laboratory for Molecular Photonics and Electronics (LAMP), Department of Physics, National Institute of Technology Calicut Calicut 673603 Kerala India
| | - Bidyut Saha
- Colloid Chemistry Laboratory, Department of Chemistry, The University of Burdwan Golapbag Burdwan 713104 West Bengal India +91 7001575909 +91 9476341691
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Jahan S, Rahman MM, Biswas SK, Hossain ATM, Saha B, Haque SMA. Breast Cancer in Younger and Older Women: A Comparison of Clinicopathological Traits. Mymensingh Med J 2024; 33:433-439. [PMID: 38557522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Breast cancer stands as the prevailing invasive cancer globally, bearing high mortality rates among women. Existing evidence indicates diminished survival rates in younger patients. Consequently, this study endeavors to assess and contrast the pathological features of breast cancer in women under 40 years of age with their older counterparts. Conducted as a cross-sectional analysis, this study encompasses 560 patients diagnosed with breast cancer, seeking treatment at Mymensingh Medical College Hospital (MMCH), Community Based Medical College Bangladesh (CBMCB) and several private hospitals in Mymensingh. The gathered data incorporates information such as age, residential area, occupation, tumor histopathology, TNM classification, staging and status of hormone receptor. The patients' mean age (standard deviation) was 49.7±11.9 years, with 20.5% below 40, most were from rural areas and were housewives. Ductal carcinoma prevailed as the most common histopathologic type (87.67%). However, younger patients exhibited a higher prevalence of lobular and other rare carcinomas compared to their older counterparts (p=0.04). Additionally, the younger group demonstrated larger tumor sizes (p=0.01), lymphatic node involvement (p=0.04) and advanced staging (p=0.004). Notably, younger age showed more negativity for estrogen and/or progesterone receptors. The results suggested that women under 40 years old exhibit more aggressive tumor characteristics and a more severe form of breast cancer compared to their older counterparts.
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Affiliation(s)
- S Jahan
- Dr Shahanaz Jahan, Associate Professor, Department of Pathology, Community Based Medical College Bangladesh (CBMCB), Mymensingh, Bangladesh; E-mail:
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Saha A, Ghosh S, Ganai S, Mukherjee P, Mahali K, Saha B, Henaish AMA, Guin PS, Alam P, Roy S. Analyzing of L-tryptophan thermodynamics and its solubility in aqueous acetonitrile blends at diverse temperatures. Biophys Chem 2024; 307:107195. [PMID: 38325036 DOI: 10.1016/j.bpc.2024.107195] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Revised: 01/26/2024] [Accepted: 01/31/2024] [Indexed: 02/09/2024]
Abstract
This paper delves into an investigation of the solubility characteristics of L-tryptophan within binary solvent systems containing aqueous acetonitrile. The primary emphasis of the study revolves around assessments based on mole fractions. The study utilizes these solubility values to assess thermodynamic constraints, including solution entropies and solution transfer free energetics. The calculated thermodynamic energies are correlated with interaction parameters, including Gibbs free energies and entropies, pertaining to the transfer of L-tryptophanfrom water to binary solvent blends of acetonitrile and water. Mathematical expressions are utilized to determine the transfer Gibbs free energies for chemical interactions, and the consequent entropies are clarified within the framework of solvent-solvent interactions. To expound upon the stability of L-tryptophan within the water-acetonitrile mixed system, we investigate the energetic aspects related to the transfer of chemicals Gibbs free energies. Additionally, standard temperature (298.15 K) is employed to calculate various related physicochemical parameters of solute/solvent.
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Affiliation(s)
- Avishek Saha
- Department of Chemistry, School of Sciences, Kalyani Regional Centre, Netaji Subhas Open University, West Bengal, India; Department of Chemistry, Srikrishna College, Bagula, Nadia, Pin- 741502, West Bengal, India
| | - Sourav Ghosh
- Department of Chemistry, School of Sciences, Kalyani Regional Centre, Netaji Subhas Open University, West Bengal, India
| | - Sintu Ganai
- Department of Chemistry, School of Sciences, Kalyani Regional Centre, Netaji Subhas Open University, West Bengal, India
| | - Puspal Mukherjee
- Department of Chemistry, School of Sciences, Kalyani Regional Centre, Netaji Subhas Open University, West Bengal, India
| | - Kalachand Mahali
- Department of Chemistry, University of Kalyani, Kalyani 741235, Nadia, India
| | - Bidyut Saha
- Colloid Chemistry Laboratory, Department of Chemistry, The University of Burdwan, Golapbag, Burdwan 713104, West Bengal, India
| | - A M A Henaish
- Physics Department, Faculty of Science, Tanta University, Tanta 31527, Egypt; NANOTECHCenter, Ural Federal University, Ekaterinburg 620002, Russia
| | - Partha Sarathi Guin
- ShibpurDinobundhoo Institution (College), 412/1, G.T. Road (South), Howrah 711102, India
| | - Perwez Alam
- Department of Pharmacognosy, College of Pharmacy, King Saud University, PO Box 2457, Riyadh 11451, Saudi Arabia
| | - Sanjay Roy
- Department of Chemistry, School of Sciences, Kalyani Regional Centre, Netaji Subhas Open University, West Bengal, India.
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Dhibar S, Roy A, Sarkar T, Das P, Karmakar K, Bhattacharjee S, Mondal B, Chatterjee P, Sarkar K, Ray SJ, Saha B. Rapid Semiconducting Supramolecular Mg(II)-Metallohydrogel: Exploring Its Potential in Nonvolatile Resistive Switching Applications and Antiseptic Wound Healing Properties. Langmuir 2024; 40:179-192. [PMID: 38112377 DOI: 10.1021/acs.langmuir.3c02298] [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] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
An effective strategy was employed for the rapid development of a supramolecular metallohydrogel of Mg(II) ion (i.e., Mg@PEHA) using pentaethylenehexamine (PEHA) as a low-molecular-weight gelator in aqueous medium under ambient conditions. The mechanical stability of the synthesized Mg@PEHA metallohydrogel was characterized by using rheological analysis, which showed its robustness across different angular frequencies and oscillator stress levels. The metallohydrogel exhibited excellent thixotropic behavior, which signifies that Mg@PEHA has a self-healing nature. Field emission scanning electron microscopy and transmission electron microscopy images were utilized to explore the rectangular pebble-like hierarchical network of the Mg@PEHA metallohydrogel. Elemental mapping through energy-dispersive X-ray spectroscopy analysis confirmed the presence of primary chemical constituents in the metallohydrogel. Fourier transform infrared spectroscopy spectroscopy provided insights into the possible formation strategy of the metallohydrogel. In this work, Schottky diode structures in a metal-semiconductor-metal geometry based on a magnesium(II) metallohydrogel (Mg@PEHA) were constructed, and the charge transport behavior was observed. Additionally, a resistive random access memory (RRAM) device was developed using Mg@PEHA, which displayed bipolar resistive switching behavior at room temperature. The researchers investigated the switching mechanism, which involved the formation or rupture of conduction filaments, to gain insights into the resistive switching process. The RRAM device demonstrated excellent performance with a high ON/OFF ratio of approximately 100 and remarkable endurance of over 5000 switching cycles. RRAM devices exhibit good endurance, meaning they can endure a large number of read and write cycles without significant degradation in performance. RRAM devices have shown promising reliability in terms of long-term performance and stability, making them suitable for critical applications that require reliable memory solutions. Significant inhibitory activity against the drug-resistant Klebsiella pneumonia strain and its biofilm formation ability was demonstrated by Mg@PEHA. The minimum inhibitory concentration value of the metallohydrogel was determined to be 3 mg/mL when it was dissolved in 1% DMSO. To study the antibiofilm activity, an MTT assay was performed, revealing that biofilm inhibition (60%) commenced at 1 mg/mL of Mg@PEHA when dissolved in 1% DMSO. Moreover, in the mouse excisional wound model, Mg@PEHA played a crucial role in preventing postoperative wound infections and promoting wound healing.
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Affiliation(s)
- Subhendu Dhibar
- Colloid Chemistry Laboratory, Department of Chemistry, The University of Burdwan, Golapbag, Burdwan 713104 West Bengal, India
| | - Arpita Roy
- Department of Physics, Indian Institute of Technology Patna, Bihar 801106, India
| | - Tuhin Sarkar
- Department of Microbiology, University of Kalyani, Kalyani 741235, India
| | - Priyanka Das
- Department of Microbiology, University of Kalyani, Kalyani 741235, India
| | - Kripasindhu Karmakar
- Colloid Chemistry Laboratory, Department of Chemistry, The University of Burdwan, Golapbag, Burdwan 713104 West Bengal, India
| | - Subham Bhattacharjee
- Department of Chemistry, Kazi Nazrul University, Asansol 713303 West Bengal, India
| | - Bijnaneswar Mondal
- Department of Chemistry, Guru Ghasidas Vishwavidyalaya, Bilaspur 495009 Chhattisgarh, India
| | - Priyajit Chatterjee
- University Science Instrumentation Centre, The University of Burdwan, Golapbag, Burdwan 713104 West Bengal, India
| | - Keka Sarkar
- Department of Microbiology, University of Kalyani, Kalyani 741235, India
| | - Soumya Jyoti Ray
- Department of Physics, Indian Institute of Technology Patna, Bihar 801106, India
| | - Bidyut Saha
- Colloid Chemistry Laboratory, Department of Chemistry, The University of Burdwan, Golapbag, Burdwan 713104 West Bengal, India
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Karmakar K, Roy A, Dhibar S, Majumder S, Bhattacharjee S, Rahaman SKM, Saha R, Chatterjee P, Ray SJ, Saha B. Exploration of a wide bandgap semiconducting supramolecular Mg(II)-metallohydrogel derived from an aliphatic amine: a robust resistive switching framework for brain-inspired computing. Sci Rep 2023; 13:22318. [PMID: 38102201 PMCID: PMC10724216 DOI: 10.1038/s41598-023-48936-2] [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: 07/24/2023] [Accepted: 12/01/2023] [Indexed: 12/17/2023] Open
Abstract
A rapid metallohydrogelation strategy has been developed of magnesium(II)-ion using trimethylamine as a low molecular weight gelator in water medium at room temperature. The mechanical property of the synthesized metallohydrogel material is established through the rheological analysis. The nano-rose like morphological patterns of Mg(II)-metallohydrogel are characterized through field emission scanning electron microscopic study. The energy dispersive X-ray elemental mapping analysis confirms the primary gel forming elements of Mg(II)-metallohydrogel. The possible metallohydrogel formation strategy has been analyzed through FT-IR spectroscopic study. In this work, magnesium(II) metallohydrogel (Mg@TMA) based metal-semiconductor-metal structures have been developed and charge transport behaviour is studied. Here, it is confirmed that the magnesium(II) metallohydrogel (Mg@TMA) based resistive random access memory (RRAM) device is showing bipolar resistive switching behaviour at room temperature. We have also explored the mechanism of resistive switching behaviour using the formation (rupture) of conductive filaments between the metal electrodes. This RRAM devices exhibit excellent switching endurance over 10,000 switching cycles with a large ON/OFF ratio (~ 100). The easy fabrication techniques, robust resistive switching behaviour and stability of the present system makes these structures preferred candidate for applications in non-volatile memory design, neuromorphic computing, flexible electronics and optoelectronics etc.
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Affiliation(s)
- Kripasindhu Karmakar
- Colloid Chemistry Laboratory, Department of Chemistry, The University of Burdwan, Golapbag, Burdwan, West Bengal, 713104, India
| | - Arpita Roy
- Department of Physics, Indian Institute of Technology Patna, Patna, Bihar, 801106, India
| | - Subhendu Dhibar
- Colloid Chemistry Laboratory, Department of Chemistry, The University of Burdwan, Golapbag, Burdwan, West Bengal, 713104, India.
| | - Shantanu Majumder
- Department of Physics, Indian Institute of Technology Patna, Patna, Bihar, 801106, India
| | - Subham Bhattacharjee
- Department of Chemistry, Kazi Nazrul University, Asansol, West Bengal, 713303, India
| | - S K Mehebub Rahaman
- Colloid Chemistry Laboratory, Department of Chemistry, The University of Burdwan, Golapbag, Burdwan, West Bengal, 713104, India
| | - Ratnakar Saha
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar, Odisha, 752050, India
| | - Priyajit Chatterjee
- University Science Instrumentation Centre, The University of Burdwan, Golapbag, Burdwan, West Bengal, 713104, India
| | - Soumya Jyoti Ray
- Department of Physics, Indian Institute of Technology Patna, Patna, Bihar, 801106, India.
| | - Bidyut Saha
- Colloid Chemistry Laboratory, Department of Chemistry, The University of Burdwan, Golapbag, Burdwan, West Bengal, 713104, India.
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Dhibar S, Pal B, Karmakar K, Roy S, Hafiz SA, Roy A, Bhattacharjee S, Ray SJ, Ray PP, Saha B. A 5-aminoisophthalic acid low molecular weight gelator based novel semiconducting supramolecular Zn(ii)-metallogel: unlocking an efficient Schottky barrier diode for microelectronics. Nanoscale Adv 2023; 5:6714-6723. [PMID: 38024309 PMCID: PMC10662173 DOI: 10.1039/d3na00671a] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 10/13/2023] [Indexed: 12/01/2023]
Abstract
A novel method has been successfully developed for creating supramolecular metallogels using zinc(ii) ions and 5-aminoisophthalic acid as the gelator (low molecular weight gelator) in a dimethylformamide (DMF) solvent at room temperature. Comprehensive rheological investigations confirm the robust mechanical strength of the resulting zinc(ii)-metallogel. Microstructural analysis conducted through field-emission scanning electron microscopy (FESEM) unveils a unique flake-like morphology, with energy-dispersive X-ray (EDX) elemental mapping confirming the prevalence of zinc as the primary constituent of the metallogel. To understand the formation mechanism of this metallogel, Fourier-transform infrared (FT-IR) spectroscopy was employed. Notably, these supramolecular zinc(ii)-metallogel assemblies exhibit electrical conductivity reminiscent of metal-semiconductor (MS) junction electronic components. Surprisingly, the metallogel-based thin film device showcases an impressive electrical conductivity of 1.34 × 10-5 S m-1. The semiconductor characteristics of the synthesized zinc(ii)-metallogel devices, including their Schottky barrier diode properties, have been extensively investigated. This multifaceted study opens up a promising avenue for designing functional materials tailored for electronic applications. It harnesses the synergistic properties of supramolecular metallogels and highlights their significant potential in the development of semiconductor devices. This work represents a novel approach to the creation of advanced materials with unique electronic properties, offering exciting prospects for future innovations in electronic and semiconductor technologies.
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Affiliation(s)
- Subhendu Dhibar
- Colloid Chemistry Laboratory, Department of Chemistry, The University of Burdwan Golapbag Burdwan 713104 West Bengal India +91 7001575909 +91 9476341691
| | - Baishakhi Pal
- Department of Physics, Jadavpur University Jadavpur Kolkata 700032 India +91 3324572844
| | - Kripasindhu Karmakar
- Colloid Chemistry Laboratory, Department of Chemistry, The University of Burdwan Golapbag Burdwan 713104 West Bengal India +91 7001575909 +91 9476341691
| | - Sanjay Roy
- Department of Chemistry, School of Sciences, Kalyani Regional Centre, Netaji Subhas Open University West Bengal India
| | - Sk Abdul Hafiz
- Department of Chemistry, KaziNazrul University Asansol 713303 West Bengal India
| | - Arpita Roy
- Department of Physics, Indian Institute of Technology Patna Bihar 801106 India
| | | | - Soumya Jyoti Ray
- Department of Physics, Indian Institute of Technology Patna Bihar 801106 India
| | - Partha Pratim Ray
- Department of Physics, Jadavpur University Jadavpur Kolkata 700032 India +91 3324572844
| | - Bidyut Saha
- Colloid Chemistry Laboratory, Department of Chemistry, The University of Burdwan Golapbag Burdwan 713104 West Bengal India +91 7001575909 +91 9476341691
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Dhibar S, Pal S, Karmakar K, Hafiz SA, Bhattacharjee S, Roy A, Rahaman SKM, Ray SJ, Dam S, Saha B. Two novel low molecular weight gelator-driven supramolecular metallogels efficient in antimicrobial activity applications. RSC Adv 2023; 13:32842-32849. [PMID: 38025858 PMCID: PMC10630960 DOI: 10.1039/d3ra05019j] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 10/08/2023] [Indexed: 12/01/2023] Open
Abstract
A remarkable ultrasonication technique was successfully employed to create two novel metallogels using citric acid as a low molecular weight gelator, in combination with cadmium(ii)-acetate and mercury(ii)-acetate dissolved in N,N-dimethyl formamide at room temperature and under ambient conditions. The mechanical properties of the resulting Cd(ii)- and Hg(ii)-metallogels were rigorously examined through rheological analyses, which revealed their robust mechanical stability under varying angular frequencies and shear strains. Detailed characterization of the chemical constituents within these metallogels was accomplished through EDX mapping experiments, while microstructural features were visualized using field emission scanning electron microscope (FESEM) images. Additionally, FT-IR spectroscopic analysis was employed to elucidate the metallogel formation mechanism. Significantly, the antimicrobial efficacy of these novel metallogels was assessed against a panel of bacteria, including Gram-positive strains such as Bacillus subtilis and Staphylococcus epidermidis, as well as Gram-negative species like Escherichia coli and Pseudomonas aeruginosa. The results demonstrated substantial antibacterial activity, highlighting the potential of Cd(ii) and Hg(ii)-based citric acid-mediated metallogels as effective agents against a broad spectrum of bacteria. In conclusion, this study provides a comprehensive exploration of the synthesis, characterization, and antimicrobial properties of Cd(ii) and Hg(ii)-based citric acid-mediated metallogels, shedding light on their promising applications in combating both Gram-positive and Gram-negative bacterial infections. These findings open up exciting prospects for the development of advanced materials with multifaceted industrial and biomedical uses.
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Affiliation(s)
- Subhendu Dhibar
- Colloid Chemistry Laboratory, Department of Chemistry, The University of Burdwan Golapbag Burdwan-713104 West Bengal India +91 7001575909 +91 9476341691
| | - Suchetana Pal
- Department of Microbiology, The University of Burdwan Burdwan-713104 West Bengal India
| | - Kripasindhu Karmakar
- Colloid Chemistry Laboratory, Department of Chemistry, The University of Burdwan Golapbag Burdwan-713104 West Bengal India +91 7001575909 +91 9476341691
| | - Sk Abdul Hafiz
- Department of Chemistry, Kazi Nazrul University Asansol-713303 West Bengal India
| | - Subham Bhattacharjee
- Department of Chemistry, Kazi Nazrul University Asansol-713303 West Bengal India
| | - Arpita Roy
- Department of Physics, Indian Institute of Technology Patna Bihar-801106 India
| | - S K Mehebub Rahaman
- Colloid Chemistry Laboratory, Department of Chemistry, The University of Burdwan Golapbag Burdwan-713104 West Bengal India +91 7001575909 +91 9476341691
| | - Soumya Jyoti Ray
- Department of Physics, Indian Institute of Technology Patna Bihar-801106 India
| | - Somasri Dam
- Department of Microbiology, The University of Burdwan Burdwan-713104 West Bengal India
| | - Bidyut Saha
- Colloid Chemistry Laboratory, Department of Chemistry, The University of Burdwan Golapbag Burdwan-713104 West Bengal India +91 7001575909 +91 9476341691
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Sar P, Kundu S, Ghosh A, Saha B. Natural surfactant mediated bioremediation approaches for contaminated soil. RSC Adv 2023; 13:30586-30605. [PMID: 37859781 PMCID: PMC10583161 DOI: 10.1039/d3ra05062a] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 09/07/2023] [Indexed: 10/21/2023] Open
Abstract
The treatment of environmental pollution by employing microorganisms is a promising technology, termed bioremediation, which has several advantages over the other established conventional remediation techniques. Consequently, there is an urgent inevitability to develop pragmatic techniques for bioremediation, accompanied by the potency of detoxifying soil environments completely. The bioremediation of contaminated soils has been shown to be an alternative that could be an economically viable way to restore polluted soil. The soil environments have long been extremely polluted by a number of contaminants, like agrochemicals, polyaromatic hydrocarbons, heavy metals, emerging pollutants, etc. In order to achieve a quick remediation overcoming several difficulties the utility of biosurfactants became an excellent advancement and that is why, nowadays, the biosurfactant mediated recovery of soil is a focus of interest to the researcher of the environmental science field specifically. This review provides an outline of the present scenario of soil bioremediation by employing a microbial biosurfactant. In addition to this, a brief account of the pollutants is highlighted along with how they contaminate the soil. Finally, we address the future outlook for bioremediation technologies that can be executed with a superior efficiency to restore a polluted area, even though its practical applicability has been cultivated tremendously over the few decades.
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Affiliation(s)
- Pintu Sar
- Department of Chemistry, The University of Burdwan Golapbag Burdwan 713104 WB India
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata Mohanpur - 741246 West Bengal India
| | - Sandip Kundu
- Department of Chemistry, The University of Burdwan Golapbag Burdwan 713104 WB India
| | - Aniruddha Ghosh
- Department of Chemistry, The University of Burdwan Golapbag Burdwan 713104 WB India
| | - Bidyut Saha
- Department of Chemistry, The University of Burdwan Golapbag Burdwan 713104 WB India
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Begum W, Saha B, Mandal U. A comprehensive review on production of bio-surfactants by bio-degradation of waste carbohydrate feedstocks: an approach towards sustainable development. RSC Adv 2023; 13:25599-25615. [PMID: 37649573 PMCID: PMC10463011 DOI: 10.1039/d3ra05051c] [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: 07/26/2023] [Accepted: 08/17/2023] [Indexed: 09/01/2023] Open
Abstract
The advancement of science and technology demands chemistry which is safer, smarter and green by nature. The sustainability of science thus requires well-behaved alternates that best suit the demand. Bio-surfactants are surface active compounds, established to affect surface chemistry. In general, microbial bio-surfactants are a group of structurally diverse molecules produced by different microbes. A large number of bio-surfactants are produced during hydrocarbon degradation by hydrocarbonoclistic microorganisms during their own growth on carbohydrates and the production rate is influenced by the rate of degradation of carbohydrates. The production of such biological surfactants is thus of greater importance. This write up is a dedicated review to update the existing knowledge of inexpensive carbohydrate sources as substrates, microorganisms and technologies of biosurfactant production. This is an economy friendly as well as sustainable approach which will facilitate achieving some sustainable development goals. The production is dependent on the fermentation strategies, different factors of the microbial culture broth and downstream processing; these all have been elaborately presented in this article.
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Affiliation(s)
- Wasefa Begum
- Department of Chemistry, The University of Burdwan Golapbag West Bengal 713104 India
| | - Bidyut Saha
- Department of Chemistry, The University of Burdwan Golapbag West Bengal 713104 India
| | - Ujjwal Mandal
- Department of Chemistry, The University of Burdwan Golapbag West Bengal 713104 India
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Islam M, Rabbani G, Siddiqua S, Islam S, Islam R, Hossain A, Hossen N, Saha B, Khatun N, Alif S, Karim M. 150P Sex differences in inoperable lung cancer risk and prognosis: Evidence from low-income population setting. J Thorac Oncol 2023. [DOI: 10.1016/s1556-0864(23)00404-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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Dhibar S, Pal B, Karmakar K, Kundu S, Bhattacharjee S, Sahoo R, Mehebub Rahaman SK, Dey D, Pratim Ray P, Saha B. Exploring a supramolecular gel to
in‐situ
crystal fabrication from the low molecular weight gelators: a crystal engineering approach towards microelectronic device application. ChemistrySelect 2023. [DOI: 10.1002/slct.202204214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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Karmakar K, Dey A, Dhibar S, Sahu R, Bhattacharjee S, Karmakar P, Chatterjee P, Mondal A, Saha B. A novel supramolecular Zn(ii)-metallogel: an efficient microelectronic semiconducting device application. RSC Adv 2023; 13:2561-2569. [PMID: 36741164 PMCID: PMC9844075 DOI: 10.1039/d2ra07374a] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [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: 11/20/2022] [Accepted: 01/10/2023] [Indexed: 01/19/2023] Open
Abstract
A unique strategy for the synthesis of a supramolecular metallogel employing zinc ions and adipic acid in DMF medium has been established at room temperature. Rheological analysis was used to investigate the mechanical characteristics of the supramolecular Zn(ii)-metallogel. Field emission scanning electron microscopy and transmission electron microscopy were used to analyse the hexagonal shape morphological features of the Zn(ii)-metallogel. Interestingly, the electrical conductivity is observed in the electronic device with Zn(ii)-metallogel based metal-semiconductor (MS) junctions. All aspects of the metallogel's electrical properties were investigated. The electrical conductivity of the metallogel-based thin film device was 7.38 × 10-5 S m-1. The synthesised Zn(ii)-metallogel based device was investigated for its semi-conductive properties, such as its Schottky barrier diode nature.
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Affiliation(s)
- Kripasindhu Karmakar
- Colloid Chemistry Laboratory, Department of Chemistry, The University of BurdwanGolapbagBurdwan-713104West BengalIndia+91 7001575909+91 9476341691
| | - Arka Dey
- Department of Physics, National Institute of Technology DurgapurDurgapur-713209West BengalIndia
| | - Subhendu Dhibar
- Colloid Chemistry Laboratory, Department of Chemistry, The University of BurdwanGolapbagBurdwan-713104West BengalIndia+91 7001575909+91 9476341691
| | - Rajib Sahu
- Max-Plank-Institut für Eisenforschung GmbHMax-Plank-Str. 140237 DüsseldorfGermany
| | | | - Priya Karmakar
- Colloid Chemistry Laboratory, Department of Chemistry, The University of BurdwanGolapbagBurdwan-713104West BengalIndia+91 7001575909+91 9476341691
| | - Priyajit Chatterjee
- University Science Instrumentation Centre, The University of BurdwanGolapbagBurdwan-713104West BengalIndia
| | - Aniruddha Mondal
- Department of Physics, National Institute of Technology DurgapurDurgapur-713209West BengalIndia
| | - Bidyut Saha
- Colloid Chemistry Laboratory, Department of Chemistry, The University of BurdwanGolapbagBurdwan-713104West BengalIndia+91 7001575909+91 9476341691
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13
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KUNDU SANDIP, Karmakar P, Rahaman SM, Mitra M, Rajwar S, Dhibar S, Layek M, SAR PINTU, Saha B. A promising mixed micellar approach to tune the oxidation of isoprenol by diperiodatoargentate(III) in aqueous media. NEW J CHEM 2023. [DOI: 10.1039/d2nj05120f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Use of environmentally benign nanoreactors in water is crucial for sustainable organic synthesis. Herein, we report that the nanomicelles as formulated by two surfactants (cationic cetylpyridinium chloride (CPC) and nonionic...
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14
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Saha AK, Saha B. Profile of neonatal candidiasis in tertiary neonatal intensive care unit: A report from a developing country. J Neonatal Perinatal Med 2023; 16:501-506. [PMID: 37718871 DOI: 10.3233/npm-231204] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/19/2023]
Abstract
BACKGROUND Systemic candidiasis is an important nosocomial infection in neonatal intensive care units. The objective of this study was to identify the change in the profile of neonatal candidiasis in a tertiary neonatal intensive care unit (NICU) in eastern India in recent times. METHODS It was a retrospective review of case records from 2014 to 2019 from a tertiary NICU of eastern India. Data of the fungal sepsis, demographic details, risk factors of fungal sepsis and mortality were collected from 103 neonates. RESULTS One hundred and three neonates had blood culture positive for fungal species of which 91 (88.3%) infants weighed ≥1500 g and 66 (64%) infants were term. There was significant higher incidence of candidiasis among outborn (Relative risk of outborn 18.84, 95% CI 10.74-33.05). Prolonged antibiotic usage (>14 days), meropenem usage (>5 days), central catheterization (>5 days), invasive mechanical ventilation (>5 days), surgical intervention were found in 64 (62.1%), 46 (44.6%), 31(30.0%), 40 (38.8%) and 39 (37.8%) infants. Non albicans candida (NAC) was isolated as the predominant species (82/103, 79.6%). Resistance to both of fluconazole and amphotericin B were found in 19 (18.4%) babies. Presence of NAC infection and resistance to both amphotericin B and fluconazole were independent predictors of candida associated mortality in NICU. CONCLUSION Neonatal candidiasis is found among outborn infants with higher birth weight and gestational age. NAC species are predominant organisms with resistance to common antifungal drugs.
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Affiliation(s)
- A K Saha
- Department of Neonatology, Institute of Post-Graduate Medical Education & Research and SSKM Hospital, Kolkata, India
| | - B Saha
- Department of Neonatology, Institute of Post-Graduate Medical Education & Research and SSKM Hospital, Kolkata, India
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Mehebub Rahaman S, Chakraborty M, Mandal T, Kundu S, Dhibar S, Kumar D, Ibrahim SM, Chakravarty M, Saha B. Mechanically tuned lanthanum carbonate nanorods in water-in-oil microemulsion scaffolds. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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16
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Dhibar S, Dey A, Dalal A, Bhattacharya S, Sahu R, Sahoo R, Mondal A, Mehebub Rahaman SK, Kundu S, Saha B. An Organic Acid consisted Multiresponsive Self-Healing Supramolecular Cu(II)-Metallogel: Fabrication and Analysis of semiconducting device. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.121021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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17
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Chowdhury B, Mehebub Rahaman S, Ghosh A, Mahali K, Sar P, Saha B. Synergistic reinforcement of CPC/TX-100 mixed micellar microenvironment for diperiodatocuprate(III) (DPC) oxidation of 1-propanol and 1,3-propanediol. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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18
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Saha B, Khatun N, Azim N, Islam SA, Proteek MF, Islam MR, Begum FA, Biddut MA, Khan MK, Islam MR. Platelet Count as a Prognostic Factor in Stage IV Non-Small Cell Lung Cancer. Mymensingh Med J 2022; 31:937-946. [PMID: 36189536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Increase platelet count can accompany various cancers including lung cancer. This finding has recently been suggested to indicate poor prognosis. In patients with malignancies, thrombocytosis has previously been related disease stage, histological type and survival. In this study, the prevalence of thrombocytosis and the prognostic information provided by platelet count were analyzed in patients with stage IV Non-Small Cell Lung Cancer (NSCLC) with an aim to assess elevated platelet count as a prognostic factor in patients with stage IV NSCLC and to investigate whether there is relationship between thrombocytosis, other clinico-pathologic factors and median survival. This prospective observational study was conducted in National Institute of Cancer Research and Hospital (NICRH), Dhaka, Bangladesh from September 2019 to August 2020. A total of 108 patients were enrolled purposively. Detail history taking, thorough physical examination was done along with relevant investigations. Data were collected by semi structured questionnaire and analysis was done with the help of Statistical Package for Social Science (SPSS), version 21.0. The mean age of the patients was found 56.4±12.2 years with range from 35 to 75 years. Majority (79.6%) patients were male, 52.8% patients came from low income and 36.1% were farmer. Majority (40.7%) were symptomatic; in bed >50.0% of day. Almost two third (59.3%) had <5.0% weight loss. Almost three fourth (69.4%) had squamous cell carcinoma. At the time of first assessment 75(69.4%) patients had normal and 33(30.6%) had elevated platelet count level. Age, sex and histological type were statistically not significant between normal and elevated platelet count level groups. But performance status, weight loss were statistically significant (p<0.05) between two groups. According to univariate analysis, age, performance status at presentation, weight loss more than 10.0% for 3 months and platelet count prior the start of treatment were all significant predictors for the overall survival. In multivariate analysis age, performance status at presentation and initial thrombocytosis were independent prognostic determinants for overall survival. Median survival time was significantly higher for the normal platelet count group and elevated platelet count group (7.5 months versus 5.5 months) respectively (95% CI, 5.5-7.5), p<0.001. The frequency of thrombocytosis in patients with stage-IV NSCLC at first presentation was 30.6% and median survival time in these patients was significantly shorter compared in patients without thrombocytosis. These results concluded that an elevated platelet count could be a useful prognostic factor for survival in patients with stage-IV NSCLC.
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Affiliation(s)
- B Saha
- Dr Beauty Saha, Registrar, Department of Radiotherapy, Mymensingh Medical College Hospital, Mymensingh, Bangladesh; E-mail:
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Pal A, Sarkar R, Karmakar K, Mondal MH, Saha B. Surfactant as an anti-corrosive agent: a review. TENSIDE SURFACT DET 2022. [DOI: 10.1515/tsd-2022-2434] [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] [Indexed: 11/15/2022]
Abstract
Abstract
Metal corrosion has always been a serious problem in industry. There has always been a need to increase the number of possible, cost-effective corrosion inhibitors. However, many commercially available corrosion inhibitors have both high efficiency and high toxicity, which has led environmental authorities to ban their use. As a result, there is growing interest in scientific research into the use of environmentally friendly compounds. Surfactants and biocompatible corrosion inhibitors are special types of chemicals suitable for long-term industrial use. Molecules with unique hydrophilic and hydrophobic properties can be used in a wide range of applications to solve solubilisation problems and improve extraction processes. The use of surfactant-based products to prevent corrosion on metallic surfaces is a new approach in the field of chemical science. This review article addresses the mechanism of corrosion on metal surfaces and discusses in detail the use of environmentally friendly, cost-effective and readily available surfactants as corrosion inhibitors. The properties and applications of different types of surfactants are also discussed.
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Affiliation(s)
- Aniruddha Pal
- Department of Chemistry, Homogeneous Catalysis Laboratory , The University of Burdwan , Burdwan 713104 , WB , India
| | - Ratan Sarkar
- Department of Chemistry, Homogeneous Catalysis Laboratory , The University of Burdwan , Burdwan 713104 , WB , India
| | - Kripasindhu Karmakar
- Department of Chemistry, Homogeneous Catalysis Laboratory , The University of Burdwan , Burdwan 713104 , WB , India
| | - Monohar Hossain Mondal
- Chemical Sciences Laboratory , Government General Degree College , Singur , Hooghly 712409 , WB , India
| | - Bidyut Saha
- Department of Chemistry, Homogeneous Catalysis Laboratory , The University of Burdwan , Burdwan 713104 , WB , India
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Begum W, Rai S, Banerjee S, Bhattacharjee S, Mondal MH, Bhattarai A, Saha B. A comprehensive review on the sources, essentiality and toxicological profile of nickel. RSC Adv 2022; 12:9139-9153. [PMID: 35424851 PMCID: PMC8985085 DOI: 10.1039/d2ra00378c] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [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: 01/18/2022] [Accepted: 03/15/2022] [Indexed: 12/17/2022] Open
Abstract
This review contains up-to-date knowledge and recent advancements on the essentiality, sources, and toxicological profile of nickel and its different compounds. Nickel is a recognized essential element for several important biological processes like the healthy growth of plants, animals, and soil/water microbes; though an excess amount of nickel intoxicates flora and fauna. Nickel is found to affect the photosynthetic function of higher plants; it can severely degrade soil fertility and causes many chronic diseases in humans. Due to the huge growth in the nickel industry and consumption of nickel-containing products, environmental pollution has become inevitable by the element nickel and also varieties of its by-products through all the phases of making, utilization and dumping. We have focused on the importance of agenda 2030 (UN 17 SDGs) during the preparation of the write-up and have highlighted goals 3, 6, 8, 9, 11, 12, 13, 14, and 15 by elaborately discussing associated points. The plausible molecular mechanism of nickel toxicity is presented in simple diagrams. The article elaborates on possible methods for remediation of nickel toxicity and the treatment of nickel dermatitis and nickel cancer. Recent advancements in the understanding of the dual aspects of nickel as beneficial and a carcinogen are the key subject of this article. This review contains up-to-date knowledge and recent advancements on the essentiality, sources, and toxicological profile of nickel and its different compounds.![]()
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Affiliation(s)
- Wasefa Begum
- Department of Chemistry, The University of Burdwan Burdwan-713104 WB India +91-342-2530452 +919476341691 +91-342-2533913
| | - Summi Rai
- Department of Chemistry, Mahendra Morang Adarsh Multiple Campus, Tribhuvan University Biratnagar Nepal
| | - Soujanya Banerjee
- Department of Chemistry, The University of Burdwan Burdwan-713104 WB India +91-342-2530452 +919476341691 +91-342-2533913
| | - Sudip Bhattacharjee
- Chemical Sciences Laboratory, Government General Degree College Singur Hooghly 712409 WB India +919475337890 +91-33-2630-0126
| | - Monohar Hossain Mondal
- Chemical Sciences Laboratory, Government General Degree College Singur Hooghly 712409 WB India +919475337890 +91-33-2630-0126
| | - Ajaya Bhattarai
- Department of Chemistry, Mahendra Morang Adarsh Multiple Campus, Tribhuvan University Biratnagar Nepal
| | - Bidyut Saha
- Department of Chemistry, The University of Burdwan Burdwan-713104 WB India +91-342-2530452 +919476341691 +91-342-2533913
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21
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Chowdhury B, Sar P, Kumar D, Saha B. Advancement of Cu(III) and Fe(III) directed oxidative transformations: Recent impact of aqueous micellar environment. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.117993] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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22
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Dhibar S, Ojha SK, Mohan A, Prabhakaran SPC, Bhattacharjee S, Karmakar K, Karmakar P, Predeep P, Ojha AK, Saha B. A multistimulus-responsive self-healable supramolecular copper( ii)-metallogel derived from l-(+) tartaric acid: an efficient Schottky barrier diode. NEW J CHEM 2022. [DOI: 10.1039/d2nj03086a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A low molecular weight gelator l-(+) tartaric acid- based self-healing supramolecular Cu(ii)-metallogel offers an electronic device of Schottky barrier diode at room temperature.
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Affiliation(s)
- Subhendu Dhibar
- Department of Chemistry, The University of Burdwan, Golapbag, Burdwan-713104, West Bengal, India
| | - Saurav Kumar Ojha
- Department of Physics, Motilal Nehru National Institute of Technology Allahabad, Prayagraj-211004, India
| | - Aiswarya Mohan
- Laboratory for Molecular Photonics and Electronics, Department of Physics, National Institute of Technology Calicut, Kozhikode-673603, Kerala, India
| | | | - Subham Bhattacharjee
- Department of Chemistry, Kazi Nazrul University, Asansol-713303, West Bengal, India
| | - Kripasindhu Karmakar
- Department of Chemistry, The University of Burdwan, Golapbag, Burdwan-713104, West Bengal, India
| | - Priya Karmakar
- Department of Chemistry, The University of Burdwan, Golapbag, Burdwan-713104, West Bengal, India
| | - Padmanabhan Predeep
- Laboratory for Molecular Photonics and Electronics, Department of Physics, National Institute of Technology Calicut, Kozhikode-673603, Kerala, India
| | - Animesh Kumar Ojha
- Department of Physics, Motilal Nehru National Institute of Technology Allahabad, Prayagraj-211004, India
| | - Bidyut Saha
- Department of Chemistry, The University of Burdwan, Golapbag, Burdwan-713104, West Bengal, India
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Chowdhury S, Rakshit A, Acharjee A, Kumar D, Saha B. Anionic micelles and their ideal binary mixture: Worth media for sustainable oxidation of hydrophobic alcohol. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.117118] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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24
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Kumar B, Das B, Garain A, Rai S, Begum W, Inamuddin M, Mondal MH, Bhattarai A, Saha B. Diverse utilization of surfactants in coal-floatation for the sustainable development of clean coal production and environmental safety: a review. RSC Adv 2022; 12:23973-23988. [PMID: 36093245 PMCID: PMC9400654 DOI: 10.1039/d2ra02861a] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 08/09/2022] [Indexed: 12/04/2022] Open
Abstract
The rapidly increasing modern industrial world demands a huge uninterrupted energy supply, where high-quality coal (HQC) is one of the major sources of the required energy. In this regard, a gigantic amount of solid waste including ash and toxic chemicals, such as heavy metals, nitrate and sulphur, gases including NOx and SOx are emitted during the direct incineration process of low-rank coal. About 10 Gt of CO2 and about one-fifth of total greenhouse gases in the world are emitted each year due to coal combustion in power plants, making it the single largest cause of climate change. The UN proposed that OECD countries stop producing electricity from coal by 2030 and the rest of the world by 2040. Herein, we discuss the development of modern technologies that can convert low-quality coal (LQC) into high-quality coal (HQC) to minimize the impact of fossil fuel burn, climate change, premature death of animals and all other related environmental hazards. Amongst the many established technologies, flotation pre-treatment is the most common and effective method used worldwide due to its lower energy input than other methods. In this review, we attempt to present an up-to-date understanding of the applications and utilities of surfactants in coal floating. We also demonstrate the possible modernization of this surfactant chemistry and its prospects. The rapidly increasing modern industrial world demands a huge uninterrupted energy supply, where high-quality coal (HQC) is one of the major sources of the required energy.![]()
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Affiliation(s)
- Biplab Kumar
- Department of Chemistry, The University of Burdwan, Burdwan-713104, WB, India
| | - Bidisha Das
- Department of Chemistry, The University of Burdwan, Burdwan-713104, WB, India
| | - Amit Garain
- Chemical Sciences Laboratory, Government General Degree College, Singur, Hooghly-712409, WB, India
| | - Summi Rai
- Department of Chemistry, M.M.A.M.C., Tribhuvan University, Biratnagar 56613, Nepal
| | - Wasefa Begum
- Department of Chemistry, The University of Burdwan, Burdwan-713104, WB, India
| | - Md. Inamuddin
- Department of Applied Chemistry, Aligarh Muslim University, Aligarh-202002, India
| | - Monohar Hossain Mondal
- Chemical Sciences Laboratory, Government General Degree College, Singur, Hooghly-712409, WB, India
| | - Ajaya Bhattarai
- Department of Chemistry, M.M.A.M.C., Tribhuvan University, Biratnagar 56613, Nepal
| | - Bidyut Saha
- Department of Chemistry, The University of Burdwan, Burdwan-713104, WB, India
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Tamang N, Shrestha P, Khadka B, Mondal MH, Saha B, Bhattarai A. A Review of Biopolymers' Utility as Emulsion Stabilizers. Polymers (Basel) 2021; 14:127. [PMID: 35012149 PMCID: PMC8747219 DOI: 10.3390/polym14010127] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 12/17/2021] [Accepted: 12/22/2021] [Indexed: 11/16/2022] Open
Abstract
Polysaccharides, polynucleotides, and polypeptides are basic natural polymers. They have various applications based on their properties. This review mostly discusses the application of natural polymers as emulsion stabilizers. Natural emulsion stabilizers are polymers of amino acid, nucleic acid, carbohydrate, etc., which are derived from microorganisms, bacteria, and other organic materials. Plant and animal proteins are basic sources of natural emulsion stabilizers. Pea protein-maltodextrin and lentil protein feature entrapment capacity up to 88%, (1-10% concentrated), zein proteins feature 74-89% entrapment efficiency, soy proteins in various concentrations increase dissolution, retention, and stability to the emulsion and whey proteins, egg proteins, and proteins from all other animals are applicable in membrane formation and encapsulation to stabilize emulsion/nanoemulsion. In pharmaceutical industries, phospholipids, phosphatidyl choline (PC), phosphatidyl ethanol-amine (PE), and phosphatidyl glycerol (PG)-based stabilizers are very effective as emulsion stabilizers. Lecithin (a combination of phospholipids) is used in the cosmetics and food industries. Various factors such as temperature, pH, droplets size, etc. destabilize the emulsion. Therefore, the emulsion stabilizers are used to stabilize, preserve and safely deliver the formulated drugs, also as a preservative in food and stabilizer in cosmetic products. Natural emulsion stabilizers offer great advantages because they are naturally degradable, ecologically effective, non-toxic, easily available in nature, non-carcinogenic, and not harmful to health.
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Affiliation(s)
- Nirmala Tamang
- Department of Chemistry, Mahendra Morang Adarsh Multiple Campus (M.M.A.M.C.), Tribhuvan University, Biratnagar 56613, Nepal;
| | - Pooja Shrestha
- Central Department of Biotechnology, Tribhuvan University, Kirtipur 44618, Nepal; (P.S.); (B.K.)
| | - Binita Khadka
- Central Department of Biotechnology, Tribhuvan University, Kirtipur 44618, Nepal; (P.S.); (B.K.)
| | | | - Bidyut Saha
- Homogeneous Catalysis Laboratory, Department of Chemistry, The University of Burdwan, Burdwan 713104, India
| | - Ajaya Bhattarai
- Department of Chemistry, Mahendra Morang Adarsh Multiple Campus (M.M.A.M.C.), Tribhuvan University, Biratnagar 56613, Nepal;
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Sarma U, Maiti M, Nair A, Bhadange S, Bansode Y, Srivastava A, Saha B, Mukherjee D. Regulation of STAT3 signaling in IFNγ and IL10 pathways and in their cross-talk. Cytokine 2021; 148:155665. [PMID: 34366205 DOI: 10.1016/j.cyto.2021.155665] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 07/20/2021] [Accepted: 07/23/2021] [Indexed: 11/17/2022]
Abstract
The pro-inflammatory IFNγ-STAT1 pathway and anti-inflammatory IL10-STAT3 pathway elicit cellular responses primarily utilizing their canonical STATs. However IL10 mediated STAT1 and IFNγ mediated STAT3 activation is also observed, suggesting crosstalk of these functionally opposing signaling pathways can potentially reshape the canonical dynamics both STATs and alter the expression of their target genes. Herein, we measured the dynamics of STATs in response to different doses of IL10 or IFNγ and in their co-stimulation and employed quantitative modeling to understand the regulatory mechanisms controlling signal responses in individual and co-simulation scenarios. Our experiments show, STAT3 in particular, exhibits a bell-shaped dose-response while treated with IFNγ or IL10 and our model quantiatively captured the dose-dependent dynamics of both the STATs in both pathways. The model next predicted and subsequent experiments validated that STAT3 dynamics would robustly remain IL10 specific when subjected to a co-stimulation of both IFNγ and IL10. Genes common to both pathways also exhibited IL10 specific expression during the co-stimulation. The findings thus uncover anovel feature of the IL10-STAT3 signaling axis during pathway crosstalk. Finally, parameter sampling coupled to information theory based analysis showed that bell-shaped signal-response of STAT3 in both pathways is primarily dependent on receptor concentration whereas robustness of IL10-STAT3 signaling axis in co-stimulation results from the negative regulation of the IFNγ pathway.
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Affiliation(s)
- U Sarma
- National Centre for Cell Science, NCCS Complex, Ganeshkhind, SP Pune University Campus, Pune 411007, India.
| | - M Maiti
- National Centre for Cell Science, NCCS Complex, Ganeshkhind, SP Pune University Campus, Pune 411007, India
| | - A Nair
- National Centre for Cell Science, NCCS Complex, Ganeshkhind, SP Pune University Campus, Pune 411007, India
| | - S Bhadange
- National Centre for Cell Science, NCCS Complex, Ganeshkhind, SP Pune University Campus, Pune 411007, India
| | - Y Bansode
- National Centre for Cell Science, NCCS Complex, Ganeshkhind, SP Pune University Campus, Pune 411007, India
| | - A Srivastava
- National Centre for Cell Science, NCCS Complex, Ganeshkhind, SP Pune University Campus, Pune 411007, India
| | - B Saha
- National Centre for Cell Science, NCCS Complex, Ganeshkhind, SP Pune University Campus, Pune 411007, India
| | - D Mukherjee
- National Centre for Cell Science, NCCS Complex, Ganeshkhind, SP Pune University Campus, Pune 411007, India.
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Abstract
Abstract
The coronavirus disease 2019 (COVID-19) has led to serious health and economic damage to all over the world, and it still remains unstoppable. The SARS-CoV-2, by using its S-glycoprotein, binds with an angiotensin-converting enzyme 2 receptor, mostly present in alveolar epithelial type II cells. Eventually pulmonary surfactant depletion occurs. The pulmonary surfactant is necessary for maintaining the natural immunity as well as the surface tension reduction within the lung alveoli during the expiration. Its insufficiency results in the reduction of blood oxygenation, poor pulmonary regeneration, lung fibrosis, and finally the respiratory system collapses. Exogenous surfactants have previously shown great promise in the treatment of infant respiratory distress syndrome, and they may also aid in the healing of damaged alveolar cells and the prevention of respiratory failure. Surfactant based therapy has been advised for the prevention of COVID-19, and the trials have begun around the world. Furthermore, greater research on the timing, dose, and the distribution of surfactant to the COVID-19 patients is required before this technique can be implemented in clinical practice.
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Affiliation(s)
- Sk Mehebub Rahaman
- Homogeneous Catalysis Laboratory, Department of Chemistry, The University of Burdwan , Burdwan , 713104 , West Bengal , India
| | - Budhadeb Chowdhury
- Homogeneous Catalysis Laboratory, Department of Chemistry, The University of Burdwan , Burdwan , 713104 , West Bengal , India
| | - Animesh Acharjee
- Homogeneous Catalysis Laboratory, Department of Chemistry, The University of Burdwan , Burdwan , 713104 , West Bengal , India
- Department of Chemistry, Hooghly Mohsin College , Chinsurah , West Bengal , India
| | - Bula Singh
- Department of Chemistry, Visva-Bharati University , Bolpur , West Bengal , India
| | - Bidyut Saha
- Homogeneous Catalysis Laboratory, Department of Chemistry, The University of Burdwan , Burdwan , 713104 , West Bengal , India
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Bhattarai A, Rub MA, Jaffari ZH, Saha B, Thu HT, Alghamdi YG, Kumar D. Spectroscopic and Conductometric Analyses of Ninhydrin and Threonine Reaction in Double-Headed Geminis. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c03184] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Ajaya Bhattarai
- Department of Chemistry, M.M.A.M.C., Tribhuvan University, Biratnagar 56613, Nepal
| | - Malik Abdul Rub
- Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Zeeshan Haider Jaffari
- Department of Environmental Engineering and Management, Chaoyang University of Technology, No. 168, Jifeng E. Rd, Wufeng
District, Taichung 413310, Taiwan
| | - Bidyut Saha
- Department of Chemistry, The University of Burdwan, Golapbag, Burdwan 713104, West Bengal, India
| | - Hoang Thi Thu
- Division of Computational Physics, Institute for Computational Science, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam
- Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam
| | - Yousef G. Alghamdi
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Dileep Kumar
- Division of Computational Physics, Institute for Computational Science, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam
- Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam
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Pal A, Mondal MH, Adhikari A, Bhattarai A, Saha B. Scientific information about sugar-based emulsifiers: a comprehensive review. RSC Adv 2021; 11:33004-33016. [PMID: 35493572 PMCID: PMC9042091 DOI: 10.1039/d1ra04968b] [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: 06/27/2021] [Accepted: 09/20/2021] [Indexed: 11/21/2022] Open
Abstract
The instantaneous demand for foods, detergents, cosmetics, and personal care products that can be commercialized with value-added benefits including natural origin, environmental friendliness, and sustainability is increasing day by day. Accordingly, the associated industries are trying to identify bioactive ingredients that may be natural alternatives to synthetic ones. This review article is mainly aimed at the classification of natural saccharide-based emulsifiers (which are mainly bio-surfactants), their methods of preparation and their various types of applications in daily life activities. Different routes of production of mono and polysaccharide-based emulsifiers and their industrial advantages are exclusively highlighted. The readers can get an approach on how sugar-based emulsifiers are synthesized and used in the pharmaceutical, food, and personal care industries to contribute excellent physicochemical properties and feature excellent functional characteristics. Many of the synthetic procedures are associated with the use of natural ingredients to prepare emulsions concerning “eco-friendly” selective materials. In this report, an endeavour has been made towards contextual examples for the production methods of some saccharide-based emulsifiers and their advantages in various fields. Amphiphilic natural emulsifiers form tiny droplets of oil-in-water stable emulsions and are very much effective for industries.![]()
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Affiliation(s)
- Aniruddha Pal
- Homogeneous Catalysis Laboratory, Department of Chemistry, The University of Burdwan Burdwan-713104 WB India
| | - Monohar Hossain Mondal
- Homogeneous Catalysis Laboratory, Department of Chemistry, The University of Burdwan Burdwan-713104 WB India .,Chemical Sciences Laboratory, Government General Degree College Singur Hooghly 712409 WB India
| | - Achyut Adhikari
- Central Department of Chemistry, Tribhuvan University Kirtipur Nepal
| | - Ajaya Bhattarai
- Department of Chemistry, M.M.A.M.C., Tribhuvan University Biratnagar Nepal
| | - Bidyut Saha
- Homogeneous Catalysis Laboratory, Department of Chemistry, The University of Burdwan Burdwan-713104 WB India
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Bhattarai A, Saha B, Jaffari ZH, Rub MA, Alghamdi YG, Kumar D. Analysis of interaction between glutamic acid and ninhydrin in the presence of acetate buffer solvent: Impact of gemini (twin-headed) surfactants. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127061] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Rakshit A, Chowdhury S, Acharjee A, Dome K, Karmakar K, Saha B. Aggregation of Surfactants: Catalytic Reinforcement in Oxidation of Unsaturated E-Crotonaldehyde. TENSIDE SURFACT DET 2021. [DOI: 10.1515/tsd-2020-2336] [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] [Indexed: 11/15/2022]
Abstract
Abstract
In this work, the kinetics of the micellar catalyzed oxidation of the unsaturated aliphatic aldehyde, E-crotonaldehyde in aqueous medium under pseudo 1st-order reaction condition was spectrophotometrically investigated at 25 °C. In the spectrophotometric measurement, the rate of the reaction was recorded by the decreasing intensity of the metallic oxidant, hexavalent chromium [Cr(VI)], in acidic aliquots at 450 nm with varying concentration of surfactants and/or heteroaromatic promoters. Spectral evidences have been produced in favour of the mechanistic approach and the product formation.
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Affiliation(s)
- Atanu Rakshit
- Homogeneous Catalysis Laboratory, Department of Chemistry, The University of Burdwan , Burdwan 713104 , WB, India
| | - Suman Chowdhury
- Homogeneous Catalysis Laboratory, Department of Chemistry, The University of Burdwan , Burdwan 713104 , WB, India
| | - Animesh Acharjee
- Homogeneous Catalysis Laboratory, Department of Chemistry, The University of Burdwan , Burdwan 713104 , WB, India
- Department of Chemistry, Hooghly Mohsin College , Chinsurah, WB , India
| | - Kuheli Dome
- Department of Chemistry, IIT (ISM), Dhanbad , Jharkhand 826004 , India
| | - Kripasindhu Karmakar
- Homogeneous Catalysis Laboratory, Department of Chemistry, The University of Burdwan , Burdwan 713104 , WB, India
| | - Bidyut Saha
- Homogeneous Catalysis Laboratory, Department of Chemistry, The University of Burdwan , Burdwan 713104 , WB, India
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Affiliation(s)
- Ratan Sarkar
- Homogeneous Catalysis Laboratory, Department of Chemistry The University of Burdwan Burdwan West Bengal India
| | - Aniruddha Pal
- Homogeneous Catalysis Laboratory, Department of Chemistry The University of Burdwan Burdwan West Bengal India
| | - Atanu Rakshit
- Homogeneous Catalysis Laboratory, Department of Chemistry The University of Burdwan Burdwan West Bengal India
| | - Bidyut Saha
- Homogeneous Catalysis Laboratory, Department of Chemistry The University of Burdwan Burdwan West Bengal India
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Abstract
Abstract
Micelles and 4d- or 5d-transition metal ions have been proved to be effective catalysts for the oxidation of 1-pentanol by Ce(IV) in aqueous medium under pseudo 1st order reaction conditions at 258C. Although cationic micelles show a speed retarding effect, anionic SDS micelles accelerate the reaction rate. The Ir(III) and Ru(III) catalysed reactions show shorter half-lives at micromolar concentration. Active Ce(IV) species are also identified and an explanation of the different catalytic activities of metal ions and micelles is presented. The accumulation of the substrate in the Stern-layer of the SDS micelles is detected. The reaction product is confirmed by melting point analysis, a 2,4-DNP test, and by IR and NMR studies.
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Affiliation(s)
- Animesh Acharjee
- Department of Chemistry, The University of Burdwan, Golapbag, Burdwan 713104, West Bengal, India
- Department of Chemistry, Hooghly Mohsin College, Chinsurah 712101, West Bengal, India
| | - Atanu Rakshit
- Department of Chemistry, The University of Burdwan, Golapbag, Burdwan 713104, West Bengal, India
| | - Suman Chowdhury
- Department of Chemistry, The University of Burdwan, Golapbag, Burdwan 713104, West Bengal, India
| | - Bidyut Saha
- Department of Chemistry, The University of Burdwan, Golapbag, Burdwan 713104, West Bengal, India
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Pal A, Garain A, Chowdhury D, Mondal MH, Saha B. A Comparative Spectral Study on the Interaction of Organic Dye Congo-Red with Selective Aqueous Micellar Media of CPC, Rhamnolipids and Saponin. TENSIDE SURFACT DET 2020. [DOI: 10.3139/113.110700] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Abstract
The present study is an investigation of the solubilising ability of natural and conventional surfactants saponin (sapindus saponin or reetha saponin), Rhamnolipids (RLs) and N-cetylpyridinium chloride (CPC) respectively via dye-surfactant interaction. The ionic dye Congo Red was examined by absorption spectroscopy method for the study. The dye interacted strongly with oppositely charged surfactant N-cetylpyridinium chloride in the pre-micellar concentration range and formed a stable dye-surfactant complex. The thermodynamic parameter, free energy change for all the systems was calculated at a constant temperature of 25°C. The ΔG0 value for N-cetylpyridinium chloride is found to be −33.269 kJ/mol while for saponin and rhamnolipids the values were −16.084 kJ/mol and −26.006 kJ/mol respectively. The values clearly indicate the efficiency of N-cetylpyridinium chloride surfactant compared to the other two surfactants. The present study aims to understand the dye solubilization in surfactant media in order to develop environmentally friendly, green and cost effective techniques.
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Affiliation(s)
- Aniruddha Pal
- Homogeneous Catalysis Laboratory , Department of Chemistry, The University of Burdwan, Burdwan-713104, WB , India
| | - Amit Garain
- Homogeneous Catalysis Laboratory , Department of Chemistry, The University of Burdwan, Burdwan-713104, WB , India
| | - Deep Chowdhury
- Homogeneous Catalysis Laboratory , Department of Chemistry, The University of Burdwan, Burdwan-713104, WB , India
| | - Monohar Hossain Mondal
- Chemical Sciences Laboratory , Government General degree College, Singur, Hooghly 712409, WB , India
| | - Bidyut Saha
- Homogeneous Catalysis Laboratory , Department of Chemistry, The University of Burdwan, Burdwan-713104, WB , India
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Saha B, Swain D, Borgohain P, Rout GR, Koyama H, Panda SK. Enhanced exudation of malate in the rhizosphere due to AtALMT1 overexpression in blackgram (Vigna mungo L.) confers increased aluminium tolerance. Plant Biol (Stuttg) 2020; 22:701-708. [PMID: 32174006 DOI: 10.1111/plb.13112] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 03/07/2020] [Indexed: 06/10/2023]
Abstract
Worldwide, 50% of soil is acidic, which induces aluminium (Al) toxicity in plants, as the phyto-availability of Al3+ increases in acidic soil. Plants responds to Al3+ toxicity by exuding organic acids into the rhizosphere. The organic acid responsible for Al3+ stress response varies from species to species, which in the case of blackgram (Vigna mungo L.) is citrate. In blackgram, an Arabidopsis malate transporter, AtALMT1, was overexpressed with the motive of inducing enhanced exudation of malate. Transgenics were generated using cotyledon node explants through Agrobacterium tumefaciens-mediated transformation. The putative transgenics were initially screened by AtALMT1-specific genomic DNA PCR, followed by quantitative PCR. Two independent transgenic events were identified and functionally characterized in the T3 generation. The transgenic lines, Line 1 and 2, showed better root growth, relative water content and chlorophyll content under Al3+ stress. Both lines also accounted for less oxidative damage, due to reduced accumulation of ROS molecules. Photosynthetic efficiency, as measured in terms of Fv /Fm , NPQ and Y(II), increased when compared to the wild type (WT). Relative expression of genes (VmSTOP1, VmALS3, VmMATE) responsible for Al3+ stress response in blackgram showed that overexpression of a malate transporter did not have any effect on their expression. Malate exudation increased whereas citrate exudation did not show any divergence from the WT. A pot stress assay found that the transgenics showed better adaptation to acidic soil. This report demonstrates that the overexpression of a malate transporter in a non-malate exuding species improves adaptation to Al3+ toxicity in acidic soil without effecting its stress response mechanism.
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Affiliation(s)
- B Saha
- Plant Molecular Biotechnology Laboratory, Department of Life Science and Bioinformatics, Assam University, Silchar, India
| | - D Swain
- Department of Agricultural Biotechnology, Orissa University of Agricultural Technology, Bhubaneswar, India
| | - P Borgohain
- Plant Molecular Biotechnology Laboratory, Department of Life Science and Bioinformatics, Assam University, Silchar, India
| | - G R Rout
- Department of Agricultural Biotechnology, Orissa University of Agricultural Technology, Bhubaneswar, India
| | - H Koyama
- Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan
| | - S K Panda
- Plant Molecular Biotechnology Laboratory, Department of Life Science and Bioinformatics, Assam University, Silchar, India
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Patidar A, Selvaraj S, Chauhan P, Guzman CA, Ebensen T, Sarkar A, Chattopadhyay D, Saha B. Peptidoglycan-treated tumor antigen-pulsed dendritic cells impart complete resistance against tumor rechallenge. Clin Exp Immunol 2020; 201:279-288. [PMID: 32443171 DOI: 10.1111/cei.13468] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 05/12/2020] [Accepted: 05/12/2020] [Indexed: 12/28/2022] Open
Abstract
Solid tumors elicit suppressive T cell responses which impair antigen-presenting cell (APC) functions. Such immune suppression results in uncontrolled tumor growth and mortality. Addressing APC dysfunction, dendritic cell (DC)-mediated anti-tumor vaccination was extensively investigated in both mice and humans. These studies never achieved full resistance to tumor relapse. Herein, we describe a repetitive RM-1 murine tumor rechallenge model for recurrence in humans. Using this newly developed model, we show that priming with tumor antigen-pulsed, Toll-like receptor (TLR)2 ligand-activated DCs elicits a host-protective anti-tumor immune response in C57BL/6 mice. Upon stimulation with the TLR2 ligand peptidoglycan (PGN), the tumor antigen-pulsed DCs induce complete resistance to repetitive tumor challenges. Intra-tumoral injection of PGN reduces tumor growth. The tumor resistance is accompanied by increased expression of interleukin (IL)-27, T-box transcription factor TBX21 (T-bet), IL-12, tumor necrosis factor (TNF)-α and interferon (IFN)-γ, along with heightened cytotoxic T lymphocyte (CTL) functions. Mice primed four times with PGN-stimulated tumor antigen-pulsed DCs remain entirely resistant to repeat challenges with RM-1 tumor cells, suggesting complete prevention of relapse and recurrence of tumor. Adoptive transfer of T cells from these mice, which were fully protected from RM-1 rechallenge, confers anti-tumor immunity to syngeneic naive recipient mice upon RM-1 challenge. These observations indicate that PGN-activated DCs induce robust host-protective anti-tumor T cells that completely resist tumor growth and recurrence.
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Affiliation(s)
- A Patidar
- National Centre for Cell Science, Pune, India
| | - S Selvaraj
- National Centre for Cell Science, Pune, India
| | - P Chauhan
- National Centre for Cell Science, Pune, India
| | - C A Guzman
- Helmholtz Centre for Infection Research (HZI), Braunschweig, Germany
| | - T Ebensen
- Helmholtz Centre for Infection Research (HZI), Braunschweig, Germany
| | - A Sarkar
- Trident Academy of Creative Technology, Bhubaneswar, India
| | | | - B Saha
- National Centre for Cell Science, Pune, India.,Trident Academy of Creative Technology, Bhubaneswar, India.,National Institute of Traditional Medicine, Belagavi, India
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Mandal S, Biswas S, Mondal MH, Saha B. Green Methodology Development for the Surfactant Assisted Williamson Synthesis of 4-Benzyloxy Benzoic Acid (Ether) in Aqueous Media. TENSIDE SURFACT DET 2020. [DOI: 10.3139/113.110676] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Abstract
Modern science and technology promote synthesis routes which are eco-friendly, chemicals which are promoted as “green” and solvents which are less toxic. A convenient method for the synthesis of ether by the reaction of 4-hydroxy benzoic acid and benzyl chloride using a surfactant as catalyst has been developed. The targeted ether is completely immiscible in water but in association with the interface active surfactants, the production of such a hydrophobic organic compound in water has been made possible. Micelles produce a pseudo-cellular organic environment to isolate species from the bulk solvent and favour the compartmentalization of reagents as well. Thus, the enhancement of the local concentration takes place and consequently the reactivity increases. The interaction of such unique chemo-, regio- and stereo-selectivity of surfactants made this reaction feasible. Organic species added to a micellar media are distributed between bulk water and micelles depending on their polarity, charge and dimension. This novel chemistry describes a set of green methods for carrying out this new generation Williamson reaction which can also be used for selective O-alkylation.
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Affiliation(s)
- Sangita Mandal
- Homogeneous Catalysis Laboratory , Department of Chemistry, The University of Burdwan, Burdwan 713104, WB , India
| | - Satyajit Biswas
- Homogeneous Catalysis Laboratory , Department of Chemistry, The University of Burdwan, Burdwan 713104, WB , India
- Department of Chemistry , Hooghly Women's College, Hooghly WB , India
| | | | - Bidyut Saha
- Chemical Sciences Laboratory , Government General degree College Singur, Hooghly 712409, WB , India
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Mondal MH, Ali MA, Pal A, Saha B. A Review on Micellar Catalyzed Oxidation Reactions of Organic Functional Groups in Aqueous Medium Using Various Transition Metals. TENSIDE SURFACT DET 2019. [DOI: 10.3139/113.110654] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Abstract
The current requirement for science and research concerns the absolute sustainable development of a chemistry that is inherently safer, smarter and more environmentally friendly. The oxidation reaction is a very fundamental transformation reaction in organic synthesis and likely plays a significant role in the production of various value-added chemicals from biomass and others precursors. In the focus of making kinetic experiments greener several modified methodologies and safe chemicals have been employed. Surfactants are such suitable alternate that go with the requirments. Surfactant aggregates i. e. micelles are nano-sized supra molecules, able to act as catalysts. They can be used to catalyze the organic functional group transformation reactions mediated with transition metals and promoted with various aromatic bases. This allowed water to be used as a solvent, where the reactions became more sustainable. The recyclability of used surfactants, enhancement of reaction kinetics and speed of reaction with no consumption of energy has added more value to this type of catalytic oxidation. This article aims to contribute to the discussion of the mechanistic aspects of various types of surfactant-catalyzed oxidation of organic functional groups.
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Affiliation(s)
- Monohar Hossain Mondal
- Chemical Sciences Laboratory , Government General degree College Singur, Hooghly 712409, WB , India
- Department of Chemistry , Hooghly Mohsin College, Hooghly 712101, WB , India
| | - Md. Ansar Ali
- Homogeneous Catalysis Laboratory , Department of Chemistry, The University of Burdwan, Burdwan 713104, WB , India
| | - Aniruddha Pal
- Department of Chemistry , Hooghly Mohsin College, Hooghly 712101, WB , India
| | - Bidyut Saha
- Homogeneous Catalysis Laboratory , Department of Chemistry, The University of Burdwan, Burdwan 713104, WB , India
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Panda A, Pati A, Saha B, Kumar A, Mohapatra S. The role of viscous and capillary forces in the prediction of critical conditions defining super-hydrophobic and hydrophilic characteristics. Chem Eng Sci 2019. [DOI: 10.1016/j.ces.2019.06.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Sar P, Ghosh A, Scarso A, Saha B. Surfactant for better tomorrow: applied aspect of surfactant aggregates from laboratory to industry. Res Chem Intermed 2019. [DOI: 10.1007/s11164-019-04017-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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41
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Patra G, Saha B, Mukhopadhyay S. High titres of IgM-bound circulating immune complexes and erythrocytic oxidative damage are indicators of dengue severity. Clin Exp Immunol 2019; 198:251-260. [PMID: 31260079 DOI: 10.1111/cei.13346] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/24/2019] [Indexed: 01/12/2023] Open
Abstract
Global incidence of dengue has drastically increased in the last few years. Despite the global morbidity and mortality associated with dengue infection, mechanisms of immune control and viral pathogenesis are poorly explored. Pancytopenias, along with increased oxidative stress, are salient clinical findings in severe dengue patients. Previously, we demonstrated significant differences of circulating immune complexes (CICs) among severe and non-severe dengue patients. Accordingly, here we sought to determine the contributory role of affinity-purified antibody-bound CICs in dengue severity. To characterize intracellular oxidative stress induced by antibody-bound CICs, 5-(and-6)-chloromethyl-2'-7'-dichlorodihydrofluorescein diacetate (DCFDA) was measured by flow cytometry. At the same time, CICs sensitized healthy red blood cells (RBC) and patients' RBC morphology was determined by scanning electron microscopy and flow cytometry analysis. Erythrophagocytosis and ferritin levels were further determined in severe and non-severe dengue patients. Our results showed that the severe patients had high titres of immunoglobulin (Ig)M-bound CICs (P < 0·0001) in their sera, increased intracellular oxidative stress (P < 0·0001), high ferritin levels (P < 0·0001), altered morphology of RBC and finally enhanced erythrophagocytosis. This study shows for the first time that RBC morphology is altered in severe dengue patients. Taken together, this study suggests that the enhanced IgM-bound CICs could contribute to the increased oxidative stress and act directly on RBC destruction of severe dengue patients, and is an important pathophysiological determinant. Hence, IgM-bound CICs can serve as an important laboratory parameter to monitor dengue infection progression.
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Affiliation(s)
- G Patra
- Department of Laboratory Medicine, School of Tropical Medicine, Kolkata, India
| | - B Saha
- Department of Tropical Medicine, Calcutta School of Tropical Medicine, Kolkata, India
| | - S Mukhopadhyay
- Department of Laboratory Medicine, School of Tropical Medicine, Kolkata, India
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Mandal S, Mandal S, Biswas S, Mondal MH, Saha B. Synthesis of 2-(Prop-2-ynyloxy) Benzaldehyde using Salicyl Aldehyde and Propargyl Bromide in Aqueous Micellar Media. TENSIDE SURFACT DET 2019. [DOI: 10.3139/113.110629] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Abstract
Advances in science and technology are promoting eco-friendly synthesis routes, green chemicals, and non-hazardous solvents. A suitable method for the synthesis of 2-(prop-2-ynyloxy) benzaldehyde was developed using three different aqueous micellar media. The targeted product ether is completely immiscible in water, but in combination with interface active surfactants it has been possible to produce the hydrophobic organic compound in water. Micelles function as a pseudocellular organic environment to isolate species from the main solvent and favor compartmentalization of reagents. There is an increase in the local concentration and consequently the reactivity increases. The use of such unique chemo-, regio-, and stereoselectivity renders this reaction new. Organic species added to a micellar media are distributed between water and micelles depending on polarity, charge, and size. In the experiments it was observed that salicylaldehyde and propargyl bromide interacted best in CTAB media and the yield of the formed product was 96 %.
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Affiliation(s)
- Sangita Mandal
- Homogeneous Catalysis Laboratory , Department of Chemistry, The University of Burdwan, Burdwan-713104, WB , India
| | - Swagata Mandal
- Homogeneous Catalysis Laboratory , Department of Chemistry, The University of Burdwan, Burdwan-713104, WB , India
| | - Satyajit Biswas
- Homogeneous Catalysis Laboratory , Department of Chemistry, The University of Burdwan, Burdwan-713104, WB , India
- Department of Chemistry , Hooghly Women's College, Hooghly WB , India
| | - Monohar Hossain Mondal
- Chemical Sciences Laboratory , Government General degree College, Singur, Hooghly 712409, WB , India
| | - Bidyut Saha
- Homogeneous Catalysis Laboratory , Department of Chemistry, The University of Burdwan, Burdwan-713104, WB , India
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Chowdhury S, Rakshit A, Acharjee A, Saha B. Novel Amphiphiles and Their Applications for Different Purposes with Special Emphasis on Polymeric Surfactants. ChemistrySelect 2019. [DOI: 10.1002/slct.201901160] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Suman Chowdhury
- Homogeneous Catalysis LaboratoryDepartment Of ChemistryThe University Of Burdwan, Golapbag, Burdwan, Pin - 713104 West Bengal India
| | - Atanu Rakshit
- Homogeneous Catalysis LaboratoryDepartment Of ChemistryThe University Of Burdwan, Golapbag, Burdwan, Pin - 713104 West Bengal India
| | - Animesh Acharjee
- Homogeneous Catalysis LaboratoryDepartment Of ChemistryThe University Of Burdwan, Golapbag, Burdwan, Pin - 713104 West Bengal India
| | - Bidyut Saha
- Homogeneous Catalysis LaboratoryDepartment Of ChemistryThe University Of Burdwan, Golapbag, Burdwan, Pin - 713104 West Bengal India
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Siva Sankara Babu T, Srinivasu N, Saha B, Venkat Reddy S. Synthesis and Antimicrobial Activity of 1-Aryl-4-(arylimino)-6-iminohexahydro-1,3,5-triazine-2-thione Derivatives. RUSS J GEN CHEM+ 2019. [DOI: 10.1134/s1070363219040303] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Saha B, Pal KK. Kinetics and Mechanism of 1,10-Phenanthroline Catalysed Chromium(VI) Oxidation of D-Glucose in Aqueous Micellar Media. Progress in Reaction Kinetics and Mechanism 2019. [DOI: 10.3184/007967405779133994] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The kinetics and mechanism of CrVI oxidation of D-glucose in the presence and absence of 1,10-phenanthroline (phen) in aqueous acid media have been studied under the conditions, [sugar]T ≥ [CrVI]T at different temperatures. The monomeric species of CrVI has been found to be kinetically active in the absence of phen whereas in the phen-catalysed path, the CrVI - phen complexes have been found to be the active oxidants. Both the paths show a first order dependence on [sugar]T and [CrVI]T. The uncatalysed path shows a second order dependence on [H+], while the catalysed path shows a first order dependence on [H+]. The phen-catalysed path is first-order in [phen]T. These observations remain unaltered in the presence of externally added surfactants. CPC inhibits both pathways while SDS catalyses the reactions.
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Affiliation(s)
- Bidyut Saha
- Department of Chemistry, The University of Burdwan, Golapbag, Burdwan - 713104, WB, India
| | - Kalyan K. Pal
- Department of Chemistry, Hetampur K.C College, Hetampur - 731124, Birbhum, WB, India
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Saha B, Islam M, Das AK. Kinetics and Mechanism of 2,2′-bipyridine Catalysed Chromium(VI) Oxidation of Dimethyl Sulfoxide in the Presence and Absence of Surfactants†. Journal of Chemical Research 2019. [DOI: 10.3184/030823405774309050] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In the 2,2′-bipyridine (bipy) catalysed CrVI oxidation of dimethyl sulfoxide (DMSO) to dimethyl sulfone, the CrVI–bipy complex formed at the pre - equilibrium step undergoes a nucleophilic attack by the S or O of DMSO to form a positively charged reactive intermediate. This intermediate experiences an oxygen transfer or a ligand coupling to give the products. The anionic surfactant (SDS) accelerates the process while the cationic surfactant (CPC) retards the reaction.
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Affiliation(s)
- Bidyut Saha
- Department of Chemistry, Visva Bharati University, Santiniketan- 731235, West Bengal, India
| | - Monirul Islam
- Department of Chemistry, Visva Bharati University, Santiniketan- 731235, West Bengal, India
| | - Asim K. Das
- Department of Chemistry, Visva Bharati University, Santiniketan- 731235, West Bengal, India
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Das AK, Roy A, and DK, Saha B. Micellar Effect: Evidence in Favour of different Mechanistic Paths of Chromium(VI) Oxidation of Formic Acid and Oxalic Acid in Aqueous Acid Media. Journal of Chemical Research 2019. [DOI: 10.3184/030823401103169135] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The cationic surfactant, cetylpyridinium chloride (CPC) inhibits the CrVI oxidation of formic acid in a monotonic fashion in aqueous H2SO4 media. On the other hand, under comparable conditions, CPC catalyses the CrVI oxidation of oxalic acid and then it inhibits the reaction after attaining a maximum value in the rate vs [CPC]T profile. The observed micellar effect has been explained in the light of the proposed reaction mechanism and it provides an indirect evidence in favour of 3 e-transfer step for CrVI oxidation of oxalic acid.
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Affiliation(s)
- Asim K. Das
- Department of Chemistry, Visva-Bharati, Santiniketan – 731235, West Bengal, India
| | - Aparna Roy
- Department of Chemistry, Visva-Bharati, Santiniketan – 731235, West Bengal, India
| | - Dalia Kar and
- Department of Chemistry, Visva-Bharati, Santiniketan – 731235, West Bengal, India
| | - Bidyut Saha
- Department of Chemistry, Visva-Bharati, Santiniketan – 731235, West Bengal, India
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Saha B, Islam M, Das AK. Micellar Effect on the Catalytic Co-Oxidation of Dimethyl Sulfoxide and Oxalic Acid by Chromium(VI) in Aqueous Acid Media: A Kinetic Study. Progress in Reaction Kinetics and Mechanism 2019. [DOI: 10.3184/007967405779134047] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The CrVI oxidation of a mixture of dimethyl sulfoxide (DMSO) and oxalic acid (OXH2) in aqueous acid media occurs much faster than that of either of the two substrates alone (DMSO reacts extremely slowly under the experimental conditions). In the mixture, both substrates undergo oxidation simultaneously in a ternary complex of CrVI through a three electron transfer step (i.e. CrVI → CrIII), two electrons from DMSO and one electron from oxalic acid. Hitherto there has been a debate regarding the existence of a 3e transfer in a single step. The micellar effect may be considered as a probe for 3e transfer in a single step.
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Affiliation(s)
- Bidyut Saha
- Department of Chemistry, Burdwan University, Burdwan 713104, West Bengal, India
| | - Monirul Islam
- Department of Chemistry, Visva- Bharati University, Santiniketan-731235, West Bengal, India
| | - Asim K. Das
- Department of Chemistry, Visva- Bharati University, Santiniketan-731235, West Bengal, India
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Das AK, Roy A, Saha B, Das M. Cooxidation of Formic Acid and Oxalic Acid by Chromium(VI) in Aqueous Acid Media: A Kinetic Study. Journal of Chemical Research 2019. [DOI: 10.3184/030823401103169973] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The Cr(VI) oxidation of a mixture of formic acid and oxalic acid in aqueous acid media occurs much faster than that of either of the two substrates alone; in the mixture, both substrates undergo oxidation simultaneously in a ternary complex of Cr(VI) through a three-electron transfer step (i.e. Cr(VI) → Cr(III)).
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Affiliation(s)
- Asim K. Das
- Department of Chemistry, Visva-Bharati University, Santiniketan – 731235, West Bengal, India
| | - Aparna Roy
- Department of Chemistry, Visva-Bharati University, Santiniketan – 731235, West Bengal, India
| | - Bidyut Saha
- Department of Chemistry, Visva-Bharati University, Santiniketan – 731235, West Bengal, India
| | - Mahua Das
- Department of Chemistry, Visva-Bharati University, Santiniketan – 731235, West Bengal, India
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Chowdhury B, Mondal MH, Barman MK, Saha B. A study on the synthesis of alkaline copper(III)-periodate (DPC) complex with an overview of its redox behavior in aqueous micellar media. Res Chem Intermed 2019. [DOI: 10.1007/s11164-018-3643-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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