Browsing by Author "Moumita Saha"

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A Comprehensive Review of Novel Emerging Electrolytes for Supercapacitors: Aqueous and Organic Electrolytes Versus Ionic Liquid-Based Electrolytes
(American Chemical Society, 2024) Moumita Saha; Ambrish Kumar; Rahul Kanaoujiya; Kamalakanta Behera; Shruti Trivedi
Storage of energy is essential to meet the daily demand for powering portable devices. This necessitates the development of storage systems such as supercapacitors (SCs), batteries, and solar cells. SCs have garnered a lot of attention for their ability to provide a massive amount of power. Nevertheless, traditional mechanisms fall short of our expectations. Ionic liquids (ILs), the evolutionary green designer solvents, are efficient enough to substitute for conventional electrolytes such as aqueous or organic electrolytes in SCs. A limited potential window of aqueous electrolytes restricts the performance of high energy electrodes. In contrast, organic electrolytes with high volatility, flammability, and lack of tunability are not suitable for long-term and robust applications. Beneficial properties of ILs such as negligible volatility, high thermal, chemical, and electrochemical stability have overcome many restrictions in SCs and improved their overall performances. ILs can be used as standalone electrolyte or can be mixed with organic electrolytes, redox elements, and polymers to obtain electrolytes for SCs. The structure of anions and cations has been found to significantly influence overall electrochemical performances. ILs benefit SCs with a wider working voltage, temperature range, and better energy density. ILs have been utilized not only as electrolytes but also in the synthesis of electrode materials. Consequently, it is essential to discuss recent findings and the function of ILs in achieving higher-performing SCs. This review mainly highlights the most recent findings on the use of ILs-based electrolytes and electrodes in supercapacitors. © 2024 American Chemical Society
Green solvents tailored nanostructures of block copolymers and their potential applications in drug delivery
(Elsevier B.V., 2024) Ambrish Kumar; Moumita Saha; Ritik Vishwakarma; Kamalakanta Behera; Shruti Trivedi
In the past decades, deep eutectic solvents (DESs) and ionic liquids (ILs) have garnered significant interest in various disciplines of the chemical, physical and biological sciences as task-oriented (designer) and emerging “green” solvent substitutes to the hazardous and volatile organic solvents. The physicochemical properties of these green designer solvents are precisely customizable by tuning the structures of their constituents for a particular application. These unique substances have shown enormous application potentials in several interdisciplinary research fields, like, catalysis, synthesis, biocatalysis, separation and extraction, biomolecular dissolution and stability, nanoscience, pharmaceutics, and drug delivery. Furthermore, block copolymers (BCPs) self-assembled nanostructures such as vesicles, micelles, microemulsions, polymersomes, etc. formed within different solvent media have attracted various researchers around the world owing to their immense potential for application in several domains of science and technology including drug delivery, photonic material, data storage, etc. This review highlights current advancements in the self-assembly of BCPs forming nanostructures within green designer solvent media like ILs and DESs. Additionally, it also gives an overview of applications of ILs, DESs, and external stimuli-responsive BCP within ILs and DESs, as drug delivery vehicles. This review will further enhance the potential utility of these unique materials (so-called designer solvents) and will help researchers design novel ILs and DESs for suitable applications including polymer science, nanoscience, pharmaceutics, drug delivery, etc. © 2024 Elsevier B.V.
Interaction between antidepressant drug trazodone with double-stranded DNA: Multi-spectroscopic and computational analysis
(Elsevier B.V., 2024) Ambrish Kumar; Moumita Saha; Juhi Saraswat; Kamalakanta Behera; Shruti Trivedi
Trazodone (TZD) is an antidepressant drug used to treat major depressive and sleeping disorders. Elevated doses of trazodone are associated with central nervous system depression, which manifests as nausea, drowsiness, confusion, vertigo, exhaustion, etc. To develop a clinically viable active pharmaceutical compound with minimal adverse effects, it is imperative to possess a comprehensive knowledge of the drug's action mechanism on DNA. Hence, we investigate the mode of interaction between trazodone and DNA utilizing various spectroscopic and computational techniques. Studies using UV–vis titration showed that the DNA and trazodone have an effective interaction. The magnitude of the Stern-Volmer constant (KSV) has been calculated to be 5.84 × 106 M−1 by the Lehrer equation from a steady-state fluorescence study. UV–vis absorption, DNA melting, dye displacement, and circular dichroism studies suggested that trazodone binds with DNA in minor grooves. Molecular docking and molecular dynamic simulation demonstrated that the TZD-DNA system was stable, and the mode of binding was minor groove. Furthermore, ionic strength investigation demonstrates that DNA and trazodone do not have a substantial electrostatic binding interaction. © 2024 Elsevier B.V.
Ionic Liquids as Green Sustainable Materials in Textiles
(John Wiley and Sons Inc, 2025) Moumita Saha; Farooq Ahmad Wani; Manoj Kumar Banjare; Ambrish Kumar; Ritik Vishwakarma; Kamalakanta Behera; Shruti Trivedi
Textile industry is one of the major pollution causing sector which needs totally an eco-friendly process instead of traditional ones. From harvesting crops or synthesizing fibers which requires very large quantities of water with extreme chemicals, to discarded fabrics causing environmental damages, textile industry requires a complete green processing method. Green solvent like ionic liquids (ILs) are emerging as a new substitute in the textile engineering processes. ILs are formed by mainly organic cations and organic/inorganic anions having many attractive physicochemical properties like high conductivity, low vapor pressure, good thermal stability etc. Here, we have discussed how ILs can be involved in textile processing like coloring of fabric or introducing novel properties, and pollution control. Thus, great efforts are being made worldwide to show a cleaner production structure to decline the toxicity and environmental threat of textile chemicals. Ultimately the goal is to increases sustainability and provides an opportunity to make novel generations of textile processes and also produce high-valued innovative textiles for greater purpose. © 2025 Wiley-VCH GmbH.
Ionic liquids: environmentally sustainable materials for energy conversion and storage applications
(Springer, 2024) Gaurav Choudhary; Jyoti Dhariwal; Moumita Saha; Shruti Trivedi; Manoj K. Banjare; Rahul Kanaoujiya; Kamalakanta Behera
Ionic liquids (ILs), often known as green designer solvents, have demonstrated immense application potential in numerous scientific and technological domains. ILs possess high boiling point and low volatility that make them suitable environmentally benign candidates for many potential applications. The more important aspect associated with ILs is that their physicochemical properties can be effectively changed for desired applications just by tuning the structure of the cationic and/or anionic part of ILs. Furthermore, these eco-friendly designer materials can function as electrolytes or solvents depending on the application. Owing to the distinctive properties such as low volatility, high thermal and electrochemical stability, and better ionic conductivity, ILs are nowadays immensely used in a variety of energy applications, particularly in the development of green and sustainable energy storage and conversion devices. Suitable ILs are designed for specific purposes to be used as electrolytes and/or solvents for fuel cells, lithium-ion batteries, supercapacitors (SCs), and solar cells. Herein, we have highlighted the utilization of ILs as unique green designer materials in Li-batteries, fuel cells, SCs, and solar cells. This review will enlighten the promising prospects of these unique, environmentally sustainable materials for next-generation green energy conversion and storage devices. Ionic liquids have much to offer in the field of energy sciences regarding fixing some of the world’s most serious issues. However, most of the discoveries discussed in this review article are still at the laboratory research scale for further development. This review article will inspire researchers and readers about how ILs can be effectively applied in energy sectors for various applications as mentioned above. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2023.
MXene-based hybrid nanostructures for sensing application: Fundamental and state-of-art
(Elsevier, 2024) Ritik Vishwakarma; Ambrish Kumar; Moumita Saha; Bhawna; Kamalakanta Behera; Shruti Trivedi
MXenes have emerged as a cutting-edge class of materials with exceptional sensing capabilities, positioning them at the forefront of sensing technology. They exhibit remarkable properties that enable them to be used as sensing materials. These two-dimensional (2D) transition metal carbides and nitrides, derived from layered MAX phases which was itself a very large family making MXenes even larger family. MXenes have emerged as state-of-the-art sensing materials due to their unique combination of properties, including high surface area, high surface-to-volume ratio, tunable surface chemistry, excellent electrical conductivity, high optical transmittivity, mechanical flexibility, and electrochemical activity which enables efficient interactions with analytes. The abundant Tx on the MXene surface, such as -OH, -O, and -F terminations, enhances the material's sensitivity to detect a wide range of analytes including gases, biomolecules, and heavy metals. These MXene-based sensors offer a limit of detection up to 10-12 or lower concentration levels and high selectivity for their target analytes is very high even in the many interfering analytes in the sample. These sensors can be tuned according to the need. In this chapter, we have highlighted about sensing applications of MXene-based hybrid nanostructures. © 2025 Elsevier Inc. All rights reserved.
MXenes in photothermal therapy
(Elsevier, 2024) Moumita Saha; Ambrish Kumar; Akhil P. Singh; Vaishali Khokhar; Shruti Trivedi; Kamalakanta Behera
The photothermal effect is the phenomenon where electromagnetic radiation is used to produce heat energy to treat various medical problems mainly cancer. Treatment of cancer using the photothermal effect is called photothermal therapy (PTT). PTT is a much safer and specific treatment in comparison to chemotherapy with minimal side effects. Recently, various treatments are being coupled with PTT to improve outcomes. The mechanism of cell death via hypoxia, photothermal conversion of light to heat in MXene, the superiority of MXenes above other photothermal agents, and recent progress in the use of MXene as a photothermal agent in the treatment of cancer and combination with other anticancer therapies are discussed in this chapter. © 2024 by Elsevier Inc. All rights reserved, including those for text and data mining, AI training, and similar technologies.
Role of 2D Materials in Environmental Monitoring
(CRC Press, 2022) Renu Dhahiya; Moumita Saha; Ashok Kumar; Pankaj Sharma; Ram Sevak Singh; Varun Rai; Kamalakanta Behera
[No abstract available]
Unusual aggregation behavior of porphyrin dye tetrakis (4- sulfonatophenylporphyrin) within aqueous deep eutectic solvents
(Elsevier B.V., 2025) Moumita Saha; Ambrish Kumar; Ritik Vishwakarma; Siddharth Pandey; Kamalakanta Behera; Shruti Trivedi
Aggregation behavior and photophysics of an anionic porphyrin dye named tetrakis(4-sulfonatophenyl)porphyrin (TPPS) was studied first time in four different choline chloride based deep eutectic solvents (DESs) i.e., reline, ethaline, glyceline, and maline. In three DESs (reline, ethaline, and glyceline), TPPS mainly remains in monomer form with minute J-aggregates. However, in fourth DES maline, a completely different behavior was observed where TPPS formed extended J- and H-aggregates. Further, effect of change in pH and role of water as additive was assessed through UV–vis molecular absorption and fluorescence emission spectroscopy. It is important to note that pH change showed no effect on TPPS spectra in maline, whereas, addition of water was found to disrupt both J- and H- aggregates. © 2025 Elsevier B.V.