A5050082956- Surfactants and Colloidal Systems
- Advanced Polymer Synthesis and Characterization
- Photochemistry and Electron Transfer Studies
- Electrostatics and Colloid Interactions
- Analytical Chemistry and Chromatography
- Ionic liquids properties and applications
- Pickering emulsions and particle stabilization
- Polymer Nanocomposites and Properties
- Lipid Membrane Structure and Behavior
- Nanoparticles: synthesis and applications
- Surface Modification and Superhydrophobicity
- Protein Interaction Studies and Fluorescence Analysis
- Block Copolymer Self-Assembly
- Environmental Chemistry and Analysis
- Drug Solubulity and Delivery Systems
- Advancements in Transdermal Drug Delivery
- Perovskite Materials and Applications
- Gold and Silver Nanoparticles Synthesis and Applications
- Chemical and Physical Properties in Aqueous Solutions
- Mechatronics Education and Applications
- Bacteriophages and microbial interactions
- Spectroscopy and Quantum Chemical Studies
- Lubricants and Their Additives
- ZnO doping and properties
- Advanced Drug Delivery Systems
Deutsches Elektronen-Synchrotron DESY
2023-2025
University of Bristol
2020-2022
Dharmsinh Desai University
2014-2021
Sardar Patel University
2016
UCLouvain
2012-2013
Weatherford College
2009-2012
Veer Narmad South Gujarat University
2008-2010
The emerging class of hybrid organic-inorganic perovskites (HOIPs) has exhibited fascinating properties for a wide range technological applications. With halide ions, HOIPs have provided novel optoelectronic devices including efficient solar cells and with pseudohalide anions-like formate (HCOO-), enigmatic electromagnetic been obtained in HOIPs. Large-scale synthesis such 2D HOIP films is immense importance the advancement its application as materials. We shown using in-situ X-ray...
The stability of silver nanoparticles is controlled mainly by two major factors, namely, aggregation and oxidation. In the present study, were synthesized using different series reducing agents like a strong agent (sodium borohydride), mild (tri-sodium citrate), weak (glucose) with capping agents, polyvinyl pyrrolidone (PVP K 30), starch, sodium carboxyl methyl cellulose (NaCMC). characterized UV-Visible absorption spectroscopy, dynamic light scattering (DLS), atomic force microscopy (AFM),...
Abstract Aqueous solution properties of polyethylene oxide– block ‐polypropylene ‐polyethylene oxide TBP [(PEO) 103 (PPO) 39 (PEO) ] were studied in the presence sodium salts with different anions (NaI, NaBr, NaCl, NaF, Na 2 SO 4 , 3 PO ) to investigate unimer‐to‐micelle transition [critical micelle concentration (CMC), critical micellization temperature (CMT)], size and phase separation (cloud point). This TBP, due its very hydrophilic (80% PEO) nature does not form micelles at ambient...
The micellization process of binary surfactant mixtures containing cationic surfactants viz. dodecyl pyridinium halide (C12PyX; X=Cl, Br, I), tetradecyl pyridium bromide (C14PyBr), and hexadecyl (C16PyX; Br) a nonionic nonapolyethylene glycol ether (C12E9), decapolyethylene (C12E10), dodecapolyethylene (C12E12), pentadecapolyethylene (C12E15) in water at different mole fractions (0–1) were studied by surface tension method. composition mixed micelles the interaction parameter, β evaluated...
Halogen-free surface active and biamphiphilic ionic liquids 1-alkyl-3-methylimidazolium octylsulphates (C<italic>n</italic>mim C<sub>8</sub>SO<sub>4</sub>, <italic>n</italic> = 4, 6, 8, 10) were synthesized their aqueous solution behaviour was studied using NMR scattering techniques.
Abstract 2D organic–inorganic hybrid lead halide perovskite films are fascinating optoelectronic materials for white‐light emission and lasing applications. Here, it is demonstrated that nano‐meter‐thick of perovskites can be formed at room temperature using Langmuir–Schaefer (LS) deposition technique. In situ X‐ray measurements reveal a self‐assembly process the formation air–water interface. This requires presence stearic acid monolayer on water subphase having solution lead‐perovskite in...
The micelles of two poly(ethylene oxide)‐poly(propylene oxide)‐poly(ethylene oxide) (PEO‐PPO‐PEO) block copolymers, P123 and F127 (same mol wt PPO but different % PEO) in aqueous solution the absence presence salts as well ionic surfactants were mainly examined by dynamic light scattering (DLS). study is further supported cloud point viscosity measurements. change (CP), size obeys Hofmeister lyotropic series. Addition both cationic cetylpyridinium chloride (CPC) anionic sodium dodecylsulfate...
Among various polymers, the Teflon surface possesses extreme hydrophobicity (low energy), which is of great interest to both industry and academia. In this report, we discuss stability aqueous dispersions (particle size range 100–3000 nm) formulated by a novel strategy that involves distinct combinations surfactant polymer mixtures for dispersion stabilization. As first step, hydrophobic particles were wetted using surfactants (ionic, Triton, Brij, Tween, Pluronic series) bearing different...
The dynamic surface tension of aqueous poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) [(PEO-PPO-PEO)]-type polymeric surfactant (P103, P105, F108, P123, and F127) solutions were correlated with water penetration in packed Teflon powders, the sedimentation suspensions these solutions, foamability, contact angle measurements on a surface. DST trend bubble lifetime indicated that overall slowdown diffusion process is function higher (PEO) molecular weight for given series block...
Lipoteichoic acid (LTA), a surface associated polymer amphiphile tethered directly to the Gram-positive bacterial cytoplasmic membrane, is key structural and functional membrane component. Its composition in regulated by bacteria under different physiological conditions. How such LTA compositional variations modulate stability integrity poorly understood. Here, we have investigated changes mixed liposomes mimicking lipid of membranes, which concentration Bacillus Subtilis was varied between...
Supramolecular assemblies involving interaction of a small organic molecule, 2-hydroxy-6-Naphthoic acid (HNA), with poly(styrene)-block-poly(4-vinylpyridine) (PS-b-P4VP) diblock copolymers are utilized to obtain micellar structures in solution, nanostructured thin films on flat substrates and, finally, nanoporous films. The formation hydrogen bonds between HNA and the poly(4-vinylpyridine) (P4VP) blocks is confirmed by spectroscopic measurements. accordingly P4VP/HNA hydrogen-bonded...