Swapnil Singh

ORCID: 0000-0003-1159-7212
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Research Areas
  • Nonlinear Optical Materials Research
  • Liquid Crystal Research Advancements
  • Molecular spectroscopy and chirality
  • Free Radicals and Antioxidants
  • Spectroscopy and Quantum Chemical Studies
  • Crystallography and molecular interactions
  • Surfactants and Colloidal Systems
  • Computational Drug Discovery Methods
  • Organic Electronics and Photovoltaics
  • Thermodynamic properties of mixtures
  • Organic Light-Emitting Diodes Research
  • Tendon Structure and Treatment
  • Nonlinear Dynamics and Pattern Formation
  • Electrochemical Analysis and Applications
  • Synthetic Organic Chemistry Methods
  • Orthopedic Surgery and Rehabilitation
  • Asymmetric Synthesis and Catalysis
  • Biochemical effects in animals
  • Chemical synthesis and alkaloids
  • Foot and Ankle Surgery
  • Spectroscopy and Laser Applications
  • Molecular Spectroscopy and Structure
  • Prion Diseases and Protein Misfolding
  • Nanocluster Synthesis and Applications
  • Structural and Chemical Analysis of Organic and Inorganic Compounds

Indiana University Bloomington
2023-2025

University of Alabama at Birmingham
2023-2024

University of Wrocław
2020-2022

Indian Institute of Science Education and Research Mohali
2021

University of Kota
2018

University of Lucknow
2013-2017

Temple University
2009

Indian Institute of Technology Kanpur
2005

University of Georgia
2004

Two-dimensional infrared (2D IR) spectroscopy is a powerful technique for measuring molecular heterogeneity and dynamics with high spatiotemporal resolution. The methods can be applied to characterize specific residues of proteins by incorporating frequency-resolved vibrational labels. However, the time scale that 2D IR measure limited label's excited-state lifetime due decay absorption bands. To extend this scale, labels longer lifetimes are sought. An effective approach inhibiting...

10.1021/acs.analchem.4c04689 article EN Analytical Chemistry 2025-01-10

SUMMARY Saliva of many vector arthropods contains factors that inhibit haemostatic responses in their vertebrate hosts. Less is known about the effect saliva on host immune responses. We investigated Aedes aegypti salivary gland extracts antigen‐stimulated transgenic OVA‐TCR DO11 mouse splenocytes vitro . T‐cell proliferation was inhibited a dose‐dependent manner, with greater than 50% inhibition at 0·3 pair (SGP) equivalents/mL. LPS‐stimulated B‐cell also inhibited. Secretion Th1 cytokines...

10.1111/j.0141-9838.2004.00712.x article EN Parasite Immunology 2004-06-01

Background: The stability of the hindfoot greatly relies on integrity talonavicular joint. Pathologies affecting this joint often necessitate fusion. Our study explores risks posed to neurovascular and tendon structures during simulated percutaneous preparation for Methods: In 9 fresh cadaver specimens, was accessed through two portals. A 2-mm Shannon burr employed surface with distraction provided by a pin-based distractor. Dissections were performed assess potential damage critical...

10.1177/10711007231224793 article EN Foot & Ankle International 2024-01-28

In the present work, structural and spectroscopic investigations were carried out on a borreverine derivative. Borreverine is class of alkaloid as well natural antimalarial drug extracted from Borreria verticillata. With aim finding possible conformers, detailed conformational analysis derivative was conducted utilizing density functional theory employing B3LYP/6-31G(d,p) method. The crystallographic geometry used for full optimization, followed by analysis. investigation predicted most...

10.2116/analsci.33.99 article EN Analytical Sciences 2017-01-01

Background: Ankle sprains are a common musculoskeletal injury among the general population and often involve lateral ligament complex. Although majority of ankle treated successfully with nonsurgical conservative measures, an estimated 5% to 20% injuries ultimately develop chronic instability (CAI). Multiple surgical treatment modalities for complex exist, such as anatomical nonanatomical reconstruction. The current gold standard primary repair is Broström-Gould procedure. This first article...

10.1177/24730114241228272 article EN cc-by-nc Foot & Ankle Orthopaedics 2024-01-01

Surface-enhanced Raman scattering (SERS) circumvents the inherent insensitivity of spectroscopy and offers a powerful tool for ultrasensitive detection characterization biomolecules at low concentrations. Here we show that SERS via electrostatic tethering between surface-modified negatively charged silver nanoparticles highly positively intrinsically disordered N-terminal domain prion protein allows sensitive reproducible as hundreds nanomolar These measurements preferentially illuminate...

10.1021/acs.jpclett.1c00240 article EN The Journal of Physical Chemistry Letters 2021-03-24

Near-infrared spectroscopy (NIR) and DFT calculations were applied to study solvent effect on competition between weak strong interactions in phenol solutions.

10.1039/d1cp02103f article EN Physical Chemistry Chemical Physics 2021-01-01

This work provides new insight into assembling of phenol in various solvents and competition between different kinds interactions. To examine both weak strong interactions, we selected a series non-aromatic aromatic solvents. Infrared spectra were measured at low (0.05 M) high (2 content. In addition, performed density functional theory calculations the structures harmonic vibrational 1:1 complexes with associates from dimer to tetramer. Based on these results, divided three groups. The...

10.1177/00037028211052302 article EN Applied Spectroscopy 2021-10-14

A two-step procedure for preparing 2-alkyl-1,3-butadienes is described. Cuprate addition to commercially available 1,4-dibromo-2-butene yields 3-alkyl-4-bromo-1-butene, a product of SN2′ substitution. Dehydrohalogenation gives 2-alkyl-1,3-butadienes.

10.1021/jo802737x article EN The Journal of Organic Chemistry 2009-03-04

This work provides new quantitative information on vibrational spectra of liquid CHCl3, CDCl3, CHBr3 and CDBr3. Deconvolution the mid-infrared (MIR), near-infrared (NIR) Raman permitted for determination parameters fundamentals, overtones combination bands. Simultaneously, anharmonic were calculated by MP2 B3LYP methods. Using these data, first time, we estimated experimental theoretical contributions from vibrations (overtones bands) to MIR all studied compounds. For chloroforms contribute...

10.1016/j.molliq.2021.116277 article EN cc-by-nc-nd Journal of Molecular Liquids 2021-04-24

10.1016/j.saa.2020.119176 article EN Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy 2020-11-16

Chlorambucil is a well-known chemotherapy drug that being used to treat chronic myelogenous leukemia. As it contains ten flexible rotational bonds, the possible spatial conformations have been identified theoretically. The spectral signatures of monomer and dimer structures chlorambucil frequency shifts due non-covalent interactions (NCIs) illustrated using FT-IR FT-Raman spectra. bond correlation between carbon hydrogen nuclei has obtained 2D-HSQC NMR spectrum. assignments harmonic normal...

10.1016/j.arabjc.2017.10.012 article EN cc-by-nc-nd Arabian Journal of Chemistry 2017-11-14
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