A5001545852- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Crystallography and molecular interactions
- High-Energy Particle Collisions Research
- Luminescence and Fluorescent Materials
- Quantum Chromodynamics and Particle Interactions
- Particle physics theoretical and experimental studies
- Silicone and Siloxane Chemistry
- Advanced Sensor and Energy Harvesting Materials
- Theoretical and Computational Physics
- Organic Electronics and Photovoltaics
- Organoboron and organosilicon chemistry
- Polymer crystallization and properties
- Statistical Mechanics and Entropy
- Enzyme Structure and Function
- Rheology and Fluid Dynamics Studies
- Drug Transport and Resistance Mechanisms
- Polymer Nanocomposites and Properties
- Calcium Carbonate Crystallization and Inhibition
- Photochromic and Fluorescence Chemistry
- Phenothiazines and Benzothiazines Synthesis and Activities
- Stochastic processes and statistical mechanics
- Nuclear physics research studies
- Markov Chains and Monte Carlo Methods
- Polymer composites and self-healing
Université Libre de Bruxelles
2024-2025
Indian Institute of Science Education and Research Kolkata
2018-2024
Vidyasagar University
2023
Central China Normal University
2017-2019
Intas Pharmaceuticals (India)
2009
Jadavpur University
1993-1999
Living tissue uses stress-accumulated electrical charge to close wounds. Self-repairing synthetic materials, which are typically soft and amorphous, usually require external stimuli, prolonged physical contact, long healing times. We overcome many of these limitations in piezoelectric bipyrazole organic crystals, recombine following mechanical fracture without any direction, autonomously self-healing milliseconds with crystallographic precision. Kelvin probe force microscopy, birefringence...
We report the first measurement of elliptic anisotropy (v_{2}) charm meson D^{0} at midrapidity (|y|<1) in Au+Au collisions sqrt[s_{NN}]=200 GeV. The was conducted by STAR experiment RHIC utilizing a new high-resolution silicon tracker. measured v_{2} 0%-80% centrality can be described viscous hydrodynamic calculation for transverse momentum (p_{T}) less than 4 GeV/c. as function kinetic energy (m_{T}-m_{0}, where m_{T}=sqrt[p_{T}^{2}+m_{0}^{2}]) is consistent with that light mesons 10%-40%...
Ductility is a common phenomenon in many metals but difficult to achieve molecular crystals. Organic crystals bend plastically on one or two face-specific directions fracture when stressed any other arbitrary directions. An exceptional metal-like ductility and malleability the isomorphous of globular molecules, BH3 NMe3 BF3 , reported, with characteristic tensile stretching, compression, twisting, thinning. The mechanically deformed samples, which transition lower symmetry phases, retain...
Although many examples of mechanically flexible crystals are currently known, their utility in all-flexible devices is not yet adequately demonstrated, despite immense potential for fabricating high performance devices. Here, we report two alkylated diketopyrrolopyrrole (DPP) semiconducting single crystals, one which displays impressive elastic mechanical flexibility whilst the other brittle. Using crystal structures and density functional theory (DFT) calculations, show that methylated...
The development of multidrug resistance (due to drug efflux by P-glycoproteins) is a major drawback with the use paclitaxel (PTX) in treatment cancer. rationale behind this study prepare PTX nanoparticles (NPs) for reversal based on fact that loaded into NPs not recognized P-glycoproteins and hence effluxed out cell. Also, intracellular penetration could be enhanced anchoring transferrin (Tf) PTX-PLGA-NPs. PTX-loaded PLGA (PTX-PLGA-NPs), Pluronic®P85-coated (P85-PTX-PLGA-NPs), Tf-anchored...
Abstract Molecular crystals are not known to be as stiff metals, composites and ceramics. Here we report an exceptional mechanical stiffness high hardness in a elastically bendable organic cocrystal [caffeine (CAF), 4-chloro-3-nitrobenzoic acid (CNB) methanol (1:1:1)] which is comparable certain low-density metals. Spatially resolved atomic level studies reveal that the mechanically interlocked weak hydrogen bond networks separated by dispersive interactions give rise these properties. Upon...
Mechanically responsive organic crystals with thermo-mechano-fluorochromic behavior are relatively scarce. A polymorphic J and H aggregate system such mechanosalient properties has potential importance for the understanding of structure-mechanochromic luminescence. Herein, we not only carefully investigated nanomechanical a fluorophore (biphenyl-4-ylmethylidene) propanedinitrile but also demonstrated their exceptional thermo-mechanochromic Both polymorphs were characterized using single...
Abstract Dynamic molecular crystals combining multiple and finely tunable functionalities are attracting an increasing attention due to their potential applications in a broad range of fields as efficient energy transducers stimuli‐responsive materials. In this context, multicomponent organic salt, piperazinium trifluoroacetate (PZTFA), endowed with unusual multidimensional responsive landscape is reported. Crystals the salt undergo smooth plastic deformation under mechanical stress...
The study demonstrates how the distribution of intermolecular interactions varying strengths along different directions in anisotropic layer structure triclinic boric acid leads to extensive mechanical shearing that...
We report new STAR measurements of the single-spin asymmetries ${A}_{L}$ for ${W}^{+}$ and ${W}^{\ensuremath{-}}$ bosons produced in polarized proton-proton collisions at $\sqrt{s}=510\text{ }\text{ }\mathrm{GeV}$ as a function decay-positron decay-electron pseudorapidity. The data were obtained 2013 correspond to an integrated luminosity $250\text{ }{\mathrm{pb}}^{\ensuremath{-}1}$. results are combined with previous $86\text{ A comparison theoretical expectations based on lepton-nucleon...
Abstract Ductility is a common phenomenon in many metals but difficult to achieve molecular crystals. Organic crystals bend plastically on one or two face‐specific directions fracture when stressed any other arbitrary directions. An exceptional metal‐like ductility and malleability the isomorphous of globular molecules, BH 3 NMe BF , reported, with characteristic tensile stretching, compression, twisting, thinning. The mechanically deformed samples, which transition lower symmetry phases,...
Dissolution properties and membrane permeability studies were conducted for four newly prepared multidrug salts of norfloxacin with NSAIDs, diclofenac, diflunisal, mefenamic acid indomethacin.
Although, dynamic crystals are attractive for use in many technologies, molecular level mechanisms of various solid-state processes and their interdependence, remain poorly understood. Here, we report a rare example crystal (1), involving heavy transition metal, rhenium, with an initial two-face elasticity (within ≈1 % strain), followed by elasto-plastic deformation, at room temperature. Further, these transform to rotator (plastic) phase ≈105 °C, displaying exceptional malleability....
Covalent organic nanotubes (CONTs) are one-dimensional porous frameworks constructed from building blocks via dynamic covalent chemistry. CONTs synthesized as insoluble powder that restricts their potential applications. The judicious selection of 2,2′-bipyridine-5,5′-dicarbaldehyde and tetraaminotriptycene for TAT-BPy has led to constructing flexible yet robust self-standing fabric up 3 μm thickness. CONT have been characterized by solid-state (1D) 13C CP-MAS, two-dimensional (2D) 13C–1H...
Single crystals of monoaromatic compounds exhibiting both mechanical softness and optical properties have attracted significant scientific interest in recent years, but they are very scarce.
In this paper we present an analysis of our $^{32}\mathrm{induced}$ interaction data at 200A GeV in terms factorial correlators. The correlated moments are found to increase with decreasing bin-bin separation, D. This follows a power law within the region D\ensuremath{\le}1. Bin-size independence correlators is observed for values D=0.4 and D=0.8. Our consistent dimension-independent scaling relation proposed by Seixas, which gives way out ``intermittent''-``nonintermittent'' ambiguity.
The cocrystallisation of carbamazepine (CBZ) with 3,4-/3,5-dihydroxybenzoic acids (34/35DHBA) different stoichiometries formed molecular alloys, exchanging a water molecule, in their isostructural CBZ dihydrate form. Furthermore, we show correlation between the mechanical properties CBZ-DHBA cocrystals amount coformer present.
The multifractal nature of target residues in ${}^{16}\mathrm{O}\ensuremath{-}\mathrm{A}\mathrm{g}\mathrm{B}\mathrm{r}$ interactions at $60A\mathrm{GeV}$ and ${}^{32}\mathrm{S}\ensuremath{-}\mathrm{A}\mathrm{g}\mathrm{B}\mathrm{r}$ $200A\mathrm{GeV}$ has been observed using the $〈{G}_{q}〉$-moment T-moment (Takagi's) methods.
Nonstatistical multiplicity fluctuations in narrow pseudorapidity intervals have been studied the pionization process of ${\ensuremath{\pi}}^{\ensuremath{-}}\ensuremath{-}\frac{\mathrm{Ag}}{\mathrm{Br}}$ and $p\ensuremath{-}\frac{\mathrm{Ag}}{\mathrm{Br}}$ interaction data at 350 GeV/c 400 GeV/c, respectively, terms scaled factorial moments. An intermittent pattern is evident for processes both cases. investigation anomalous fractal dimensions suggests a cascading mechanism multihadron...
Amphiphilic di-cationic fumaronitrile derivatives with peripheral n-alkyl chains formed organic nanoparticles (NPs) through self-assembly in aqueous media. The NPs exhibited enhanced luminescence both steady-state and delayed mode comparison to their molecularly dissolved state. Due the presence of multivalent array positive charges on surface, they were found bind heparin, a bio-polyanion which is routinely employed during surgery as an anticoagulant. electrostatically driven co-assemblies...