A5020461124- ZnO doping and properties
- Asymmetric Synthesis and Catalysis
- Copper-based nanomaterials and applications
- Copper Interconnects and Reliability
- Electrocatalysts for Energy Conversion
- Chalcogenide Semiconductor Thin Films
- Metal and Thin Film Mechanics
- Advanced battery technologies research
- Synthetic Organic Chemistry Methods
- Chemical synthesis and alkaloids
- Catalytic C–H Functionalization Methods
- Semiconductor materials and devices
- Alkaloids: synthesis and pharmacology
- Oxidative Organic Chemistry Reactions
- Supercapacitor Materials and Fabrication
- Quantum Dots Synthesis And Properties
- X-ray Diffraction in Crystallography
- Catalytic Processes in Materials Science
- Aluminum Alloys Composites Properties
- Cyclopropane Reaction Mechanisms
- Perovskite Materials and Applications
- Magnetic properties of thin films
- Advanced Synthetic Organic Chemistry
- Carbon dioxide utilization in catalysis
- HVDC Systems and Fault Protection
Indian Institute of Science Education and Research Kolkata
2022-2025
Korea University
2025
Southwestern Medical Center
2023-2025
The University of Texas Southwestern Medical Center
2023-2025
Indian Institute of Science Education and Research, Bhopal
2016-2024
Vidyasagar University
2019-2023
All India Institute of Medical Sciences
2023
University of Iowa
2023
Creative Commons
2023
Indian Institute of Engineering Science and Technology, Shibpur
2018-2021
The development of metal-free bifunctional electrocatalysts for hydrogen and oxygen evolution reactions (HER OER) is significant but rarely demonstrated. Porous organic polymers (POPs) with well-defined electroactive functionalities show superior performance in reaction (HER) (OER). Precise control the active sites' local environment requires careful modulation linkers through judicious selection building units. Here, a systematic strategy introduced modulating functionality to design...
Highly durable porous battery-type supercapacitor charge storage material derived through electrochemical surface reconstruction of nickel cobalt pyrophosphate.
Epoxides are versatile chemical intermediates that used in the manufacture of diversified industrial products. For decades, thermochemical conversion has long been employed as primary synthetic route. However, it several drawbacks, such harsh and explosive operating conditions, well a significant greenhouse gas emissions problem. In this study, we propose an alternative electrocatalytic epoxidation reaction, using [CoIII(TAML)]- (TAML = tetraamido macrocyclic ligand) molecular catalyst....
Ternary carbide in metal matrix composites constitute a big challenge the industry, and this regard their surface treatment is one of most important issues. (CuxTiyCz, where x, y z are integers) thin films synthesized by magnetron sputtering characterized with respect to film depth. X-ray photoelectron spectroscopy (XPS) Cu-2p Ti-2p peaks shows associated shake-up satellite at smaller depth; peak intensity reduced higher The relative Cu Ti increases larger optical band gap varies from 1.83...
An organocatalytic enantioselective aldol reaction using paraformaldehyde as C1-unit has been developed for the synthesis of 2-oxindoles sharing vicinal all-carbon quaternary stereocenters. The methodology is eventually employed in formal total (+)-folicanthine (1b).
The design and development of efficient low-cost electrocatalysts for both anodic (oxygen evolution reaction (OER)/hydrazine oxidation (HzOR)) cathodic (hydrogen (HER)) reactions are the major challenges cleaner hydrogen production. Especially, fabrication with abundant electrochemically active sites through simple synthetic routes is great interest to draw excellent catalytic efficiency. This report provides a strategy prepare CoS2–MoS2 heterostructures spheroid-like CoS2 sulfurization from...
Introducing foreign elements into a crystal lattice could trigger phase transformation, serving as an excellent means to fabricate highly electrocatalytic phases. NiCo2S4 is notably thiospinel phase, normally synthesized via two‐step route and rarely explored for hydrazine oxidation reaction (HzOR). This work reports one‐step hydrothermal syntheses of CuCo2S4 their performance HzOR oxygen evolution (OER). Time‐dependent suggest formation (M, Co)9S8; M=Ni/Cu followed by conversion the...
Utilization of carbon dioxide (CO2) as a C1 feedstock to synthesize value-added chemicals using catalyst made from earth-abundant elements and under mild conditions is sustainable approach toward neutrality but difficult achieve. Herein, the CoAl2O4/Al2O3 composite developed used for light-driven epoxide cyclic carbonate conversion CO2. catalysts (x% Co–Al2O3) are prepared by calcining cobalt-incorporated Al-oxy-hydroxide at 500 °C an air atmosphere. The 15% Co–Al2O3 (57% Al2O3 43% CoAl2O4)...
<title>Abstract</title> Intestinal homeostasis relies on a protective mucus layer that separates bacteria from the host, with Muc2 as its primary component. This secreted, gel-forming mucin is heavily O-glycosylated, allowing it to retain water and support beneficial bacteria. For first time, we demonstrate N-glycosylation plays critical in maturation, O-glycosylation, barrier integrity, prevention of dysbiosis. Using mouse models global intestine-specific N-glycan deficiency- caused by loss...
Laparoscopic trans abdominal preperitoneal (TAPP) repair of hernia is one the most commonly performed surgeries and may cause significant postoperative pain. Among different truncal block techniques, quadratus lumborum (QL) transversus abdominis plane blocks (TAP) are used during this surgery. We aimed to investigate whether, bilateral QL by trans-muscular approach provided better analgesia as compared posterior TAP in these patients.Forty adult patients with American Society...
Diaspore [α-AlO(OH)] is found to be an efficient halide-free catalyst for the succesful fixation of CO 2 into epoxides make cyclic carbonates.
A general approach to bispyrroloindolines via a key thiourea-catalyzed addition of malonates 3-sulfonyl-3'-indolyl-2-oxindoles is reported. The enantioselelective process found be highly effective (up 94% ee), where C-C bond formation leads the synthesis number 2-oxindoles with an all-carbon quaternary stereocenter.
We report an efficient direct alkynylations of 3-alkyl/aryl 2-oxindoles employing ethynyl-1,2-benziodoxol-3(1H)-one (EBX) to afford a wide variety 3-alkynyl-3-alkyl/aryl 2-oxindole under transition-metal free condition. In addition activated carbonyl compounds viz. 2-oxindole-3-alkylcarboxylates, this protocol works efficiently on 2-oxindols as well thereby widening the scope even further. Eventually, Pd(0)-catalyzed asymmetric decarboxylative allylation few products is shown furnish...
Biomimetic total syntheses of either enantiomers a number ergot alkaloids, chanoclavine I (1b), aldehyde (1c), pyroclavine (1e), festuclavine (1f), pibocin A (1g), 9-deacetoxyfumigaclavine C (1h), and fumigaclavine G (1i), have been achieved from seco-agroclavine (1a). The advanced intermediate for (1a) was synthesized via key thiourea-catalyzed intramolecular nitronate addition onto α,β-unsaturated ester.
We report the surface stoichiometry of Tix-CuyNz thin film as a function depth. Films are deposited by high power impulse (HiPIMS) and DC magnetron sputtering (DCMS). The composition Ti, Cu, N in is investigated X-ray photoelectron spectroscopy (XPS). At larger depth, relative Cu Ti increased compared to surface. amount adventitious carbon which present on strongly decreases with Deposited films also contain significant oxygen whose origin not fully clear. Grazing incidence diffraction...
1T-MoS 2 -metallic Ni composite as cathode and NiS anode material showed efficient electrocatalytic performance towards total water splitting under alkaline conditions.
Dimerization of 3-substituted 2-oxindoles has been developed under a mild electrochemical condition, avoiding toxic chemical oxidants and metal by-products. This methodology forms C(sp3)-C(sp3) bond at the pseudobenzylic position two partners with broad substrate scope. These dimeric structural motifs are important building blocks for total synthesis pyrroloindoline alkaloids. Furthermore, this work demonstrates in-depth mechanistic insights employing electrochemistry, which suggests...
A comprehensive study on the electronic structure and optical properties of a Cu3N film is performed by first-principles using density functional theory. The Hubbard (U) term added in local approximation approach for improvement theoretical band gap energy. unit cell shows strong hybridization Cu 3d N 2p orbitals near-valence region (M) because their antibonding states which are also observed molecular (HOMO–LUMO). conduction dominated very small amount 3p orbitals. exhibits negligible...
Abstract Battery‐type supercapacitors have drawn significant attention due to their high charge storage ability resulted from the combined surface and intercalation redox phenomenon. In this regard, nickel chalcogenides are expected deliver specific capacity accompanied by dominant battery‐type supercapacitor features. Herein, we developed a facile one step solvothermal route prepare pure phase Ni 3 Se 4 nanostructures attempted understand synthetic factors such as solvent Ni/Se ratio on...