Publications

Superior hydrogen evolution electrocatalysis enabled by CoP nanowire array on graphite felt

CCDC 1881665: Experimental Crystal Structure Determination

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

Exploration of nonlinear optical enhancement and interesting optical behavior with pyrene moiety as the conjugated donor and efficient modification in acceptor moieties

CCDC 788445: Experimental Crystal Structure Determination

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

Biofibers and Biopolymers for Biocomposites

Green Photocatalytic Synthesis of Au Nanoparticles/Multi-walled Carbon Nanotubes Nanocomposites and their Application for Glucose Sensing

In this communication, we report on a novel green photocatalytic route to synthesize Au nanoparticles/multi-walled carbon nanotubes (AuNPs/MWCNTs) nanocomposites with the use of Sn-porphyrin (SnP) as a high-efficiency photocatalyst to reduce Au3+ to form AuNPs onto MWCNTs. Such AuNPs/MWCNTs nanocomposites exhibit good catalytic performance toward both oxidation and reduction of H2O2. An electrochemical glucose biosensor was further constructed by dropping glucose oxidase on the surface of AuNPs/MWCNTs nanocomposites modified glassy carbon electrode. The biosensor shows linear response toward different concentrations of glucose from 1 to 33 mM (r = 0.998) and the detection limit at 0.5 V is estimated to be 240 μM at a signal-to-noise ratio of 3.

CCDC 1904345: Experimental Crystal Structure Determination

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

Assessment of antibacterial cellulose nanocomposites for water permeability and salt rejection

Advances in Mesoporous Thin Films via Self-Assembly Process

BaSrLaFe12O19 nanorods: optical and magnetic properties

Mixed Micellization, Thermodynamic and Adsorption Behavior of Tetracaine Hydrochloride in the Presence of Cationic Gemini/Conventional Surfactants

In this approach, tensiometry and UV-visible techniques are used to determine the effect of cationic gemini and conventional surfactants on tetracaine hydrochloride (TCH), an anesthetic drug. We have estimated micellar, interfacial, and energetic constraints. To gain a deep understanding of their mixed association behavior, the outputs were examined using different theoretical models. The critical micelle concentration for single and mixed amphiphiles was estimated. The cmc values of mixed amphiphiles were found between the individual amphiphiles due to strong attractive interaction (synergism) between the components after mixing. The non-ideal behavior of mixtures was confirmed by the larger values of ideal cmc than the experimental cmc values. The negative values of interaction parameter (<i>β</i>) and values of activity coefficients less than unity indicate strong synergistic interaction between drug and surfactant. The stability of the mixed systems is demonstrated by the negative Gibbs free energy of micellization and excess free energy of micellization. In contrast to a single chain surfactant, a double chain surfactant (gemini) exhibits better interactions with the drug. Spectral measurements (UV-visible spectra) were used to monitor the binding of the drug with surfactant (conventional as well as gemini). Studying these mixed aggregates could help to optimize their compositions and find synergistic properties between TCH monomers and surfactants.

Structural investigations, anti-leishmanial, antibacterial and docking studies of new pentavalent antimony carboxylates

Synergistic effect of an antipsychotic drug chlorpromazine hydrochloride with pluronic triblock copolymer: A physicochemical study

A MnS/FeS₂ heterostructure with a high degree of lattice matching anchored into carbon skeleton for ultra-stable sodium-ion storage

Taking their similarities in crystal structures and close lattice parameters into consideration, cubic pyrite FeS 2 and MnS were used to construct a heterostructure for achieving synchronous improvements in specific capacity and rate performance.

CCDC 872568: Experimental Crystal Structure Determination

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

Self-Aggregation of Cationic Dimeric and Anionic Monomeric Surfactants with Nonionic Surfactant in Aqueous Medium

Abstract Spectrofluorometric measurements have been used to elaborate the self-aggregation of mixture of anioinic, sodium dodecylbenzenesulfonate (SDBS), and cationic gemini, alkanediyl-α, ω-bis (tetradecyldimethylammonium bromide) (14-4-14) with nonionic surfactant, polyoxyethylene 10 cetyl ether (Brij-56). The critical micelle concentration (cmc) of the binary mixtures has been investigated. Application of the regular solution theory (RST) to the experimental data yield the interaction parameter at mixed micelles (β), indicate an attractive interaction and reflect the synergistic behavior in both Brij-56/SDBS and Brij-56/14-4-14 systems. The micelle aggregation number (N agg) was measured using a steady state fluorescence quenching method. The N agg values of the mixed surfactant system were larger than those of pure components. The micropolarity of various combinations and the binding constants (K sv) were determined from the ratio of intensity of peaks (I 1/I 3) of pyrene fluorescence emission spectrum and its quenching, respectively. Keywords: Aggregation numbercritical micelle concentrationgemini surfactantmicropolarity Notes The literature values are given in parentheses. a Bakshi et al.[ Citation 30 ];. b Kabir-ud Din et al.[ Citation 31 ];. c Azum et al.[ Citation 32 ]. Color versions of one or more of the figures in the article can be found online at www.tandfonline.com/ldis.

Acidically oxidized carbon cloth: a novel metal-free oxygen evolution electrode with high catalytic activity

The efficiency of many energy storage technologies is limited by the sluggish kinetics of the oxygen evolution reaction (OER) and it is thus of great importance to develop highly active OER electrocatalysts made from earth-abundant elements. In this communication, we report a novel metal-free oxygen evolution electrode with high catalytic activity and stability through simple acidic oxidation of commercially available carbon cloth (CC). The resulting acidically oxidized CC exhibits an overpotential of 328 mV and a Tafel slope of 82 mV dec(-1) with 100% Faradaic efficiency. This electrode needs an overpotential of 477 mV to afford a current density of 10 mA cm(-2) and maintains its catalytic activity for at least 24,000 s. It offers us a low-cost flexible electrocatalytic electrode for device integration toward water splitting and rechargeable metal-air battery applications.

DNA-Binding and Cytotoxicity of Copper(I) Complexes Containing Functionalized Dipyridylphenazine Ligands

A set of copper(I) coordination compounds with general formula [CuBr(PPh₃)(dppz-R)] (dppz-R = dipyrido[3,2-a:2',3'-c]phenazine (<b>Cu-1</b>), 11-nitrodipyrido[3,2-a:2',3'-c]phenazine (<b>Cu-2</b>), 11-cyanodipyrido[3,2-a:2',3'-c]phenazine (<b>Cu-3</b>), dipyrido[3,2-a:2',3'-c]phenazine-11-phenone (<b>Cu-4</b>), 11,12-dimethyldipyrido[3,2-a:2',3'-c]phenazine (<b>Cu-5</b>)) have been prepared and characterized by elemental analysis, ¹H-NMR and ³¹P-NMR spectroscopies as well as mass spectrometry. The structure of <b>Cu-1</b> was confirmed by X-ray crystallography. The effect of incorporating different functional groups on the dppz ligand on the binding into CT-DNA was evaluated by absorption spectroscopy, fluorescence quenching of EtBr-DNA adducts, and viscosity measurements. The functional groups affected the binding modes and hence the strength of binding affinities, as suggested by the changes in the relative viscosity. The differences in the quenching constants (K_sv) obtained from the fluorescence quenching assay highlight the importance of the functional groups in altering the binding sites on the DNA. The molecular docking data support the DNA-binding studies, with the sites and mode of interactions against B-DNA changing with the different functional groups. Evaluation of the anticancer activities of the five copper compounds against two different cancer cell lines (M-14 and MCF-7) indicated the importance of the functional groups on the dppz ligand on the anticancer activities. Among the five copper complexes, the cyano-containing complex (<b>Cu-3</b>) has the best anticancer activities.