A5071664360- Electrochemical Analysis and Applications
- Molecular Junctions and Nanostructures
- Electrochemical sensors and biosensors
- Porphyrin and Phthalocyanine Chemistry
- Metal-Catalyzed Oxygenation Mechanisms
- Analytical Chemistry and Sensors
- Mesenchymal stem cell research
- Advanced biosensing and bioanalysis techniques
- SARS-CoV-2 and COVID-19 Research
- COVID-19 Clinical Research Studies
- Long-Term Effects of COVID-19
- Hemoglobin structure and function
- Electrocatalysts for Energy Conversion
- Gas Sensing Nanomaterials and Sensors
- Neonatal Health and Biochemistry
- Material Dynamics and Properties
- Mesoporous Materials and Catalysis
- Hemoglobinopathies and Related Disorders
- Surface Chemistry and Catalysis
- Iron oxide chemistry and applications
- Autophagy in Disease and Therapy
- Nanocluster Synthesis and Applications
- Cancer, Hypoxia, and Metabolism
- Conducting polymers and applications
- RNA Interference and Gene Delivery
All India Institute of Medical Sciences
2023-2025
Stanford University
2025
Cardiovascular Institute of the South
2025
Indian Association for the Cultivation of Science
1979-2021
Temple University
2017
Government of West Bengal
2014
University of Calcutta
2014
An iron porphyrin catalyst with four electron donor groups is reported. The ligand bears a distal hydrogen bonding pocket which inverts the normal axial binding selectivity exhibited by porphyrins bearing sterically crowded structures. This specifically reduces O2 electrons under both fast and slow fluxes at pH 7.
Electrodes bearing thiolate and imidazole coordinated iron porphyrin catalysts are constructed characterized using resonance Raman spectroscopy, absorption electrochemistry. The cyclic voltammetry data their pH dependences used to establish the nature of exchangeable trans ligands in both these cases. In situ monitoring partially reduced oxygen species (PROS) produced during O2 reduction rotating ring disc electrochemistry (RRDE) experiments provide direct insight into "push-effect" ligand....
Background Mesenchymal stem cells (MSCs) mediate immunomodulation through various mechanisms, including apoptosis, efferocytosis, and mitochondrial transfer. Our study investigates the impact of hypoxia preconditioning on immune metabolic reprogramming immunomodulatory potential MSCs in acute graft-versus-host disease (aGVHD). Additionally, we explored differential effects tissue-specific MSCs, specifically bone marrow (BM) Wharton Jelly (WJ), elucidated mechanisms underlying variability...
Cardiac wall motion abnormalities (WMA) are strong predictors of mortality, but current screening methods using Q waves from electrocardiograms (ECGs) have limited accuracy and vary across racial ethnic groups. This study aimed to identify novel ECG features deep learning enhance WMA detection, referencing echocardiography as the gold standard. We collected echocardiogram data 35,210 patients in California labeled unstructured language parsing echocardiographic reports. A neural network...
The protonation state of thiols in self-assembled monolayers (SAMs) on Ag and Au surfaces nanoparticles (NPs) has been an issue contestation.
Controlled three-dimensional positioning of nanoparticles is achieved by delivering single fluorescent from a nanopipette and capturing them at well-defined regions an electrified substrate. To control the position nanoparticles, force pressure-driven flow pipette balanced attractive electrostatic substrate, providing strategy which nanoparticle trajectories can be manipulated in real time. visualize motion, resistive-pulse electrochemical setup coupled with optical microscope, are tracked...
Investigation of the proton coupled electron transfer steps involved in electrocatalytic ORR by hemin modified electrodes allows determination pKas proximal and distal oxygen atoms a rate determining FeIII–OOH species.
Convenient detection of thiol groups using Raman spectroscopy.
Using a combination of self-assembly and synthesis, bioinspired electrodes having dilute iron porphyrin active sites bound to axial thiolate imidazole ligands are created atop self-assembled monolayers (SAMs). Resonance Raman data indicate that picket fence architecture results in high-spin (HS) ground state (GS) these complexes hydrogen-bonding triazole low-spin (LS) state. The reorganization energies (λ) thiolate- imidazole-bound for both HS LS states experimentally determined. λ 5C...
Ammonium tetrathiomolybdate modified gold electrodes can easily tune the rate of electron transfer to redox active species when deposition time is varied.
COVID19 is a pandemic that has affected millions around the world since March 2020. While many patients recovered completely with mild illness, succumbed to various organ morbidities. This heterogeneity in clinical presentation of infection posed challenge clinicians world. It therefore crucial identify specific organ-related morbidity for effective treatment and better patient outcomes. We have carried out serum-based proteomic experiments protein biomarkers can flag dysfunctions patients.
A general and modular synthetic route is developed for the synthesis of azidoalkylthiol molecules, which contain an amide functional group, from common easily available precursors. SAMs (self-assembled monolayers) formed by these containing azidoalkylthiols are characterised attenuated total reflectance FTIR spectroscopy, X-ray photoelectron contact angle goniometry surface enhanced Raman spectroscopy. Signature peaks identified in data allows direct observation all groups on Au electrodes...
SARS-CoV-2 causes substantial extrapulmonary manifestations in addition to pulmonary disease. Some of the major organs affected are cardiovascular, hematological and thrombotic, renal, neurological, digestive systems. These types muti-organ dysfunctions make it difficult challenging for clinicians manage treat COVID-19 patients. The article focuses identify potential protein biomarkers that can flag various organ systems COVID-19. Publicly reposited high throughput proteomic data from human...
Reactions requiring controlled delivery of protons and electrons are important in storage energy small molecules. While control over proton transfer can be achieved by installing appropriate chemical functionality the catalyst, electron-transfer (ET) rates utilizing self-assembled monolayers (SAMs) on electrodes. Thus, a deeper understanding ET through SAM to an immobilized or covalently attached redox-active species is desirable. Long-range across several SAM-covered Au electrodes ferrocene...
Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation A. Das, Roychowdhury, S. P. Pati, Bandyopadhyay, D. Das; Structural, magnetic Mössbauer studies of (BiFeO3)0.7−(SrFe12O19)0.3 nanocomposite prepared by a sol-gel route. AIP Conf. Proc. 24 April 2014; 1591 (1): 399–401. https://doi.org/10.1063/1.4872616 Download citation file: Ris (Zotero) Reference Manager...