Publications

Mixed micellization between amphiphilic drug promethazine hydrochloride and cationic surfactant (conventional as well as gemini)

Nanophotocatalysis and Environmental Applications Materials and Technology

A simple route for preparation of highly stable CuO nanoparticles for nonenzymatic glucose detection

Highly stable CuO nanoparticles about 2–4 nm in diameter have been successfully prepared by heating aqueous Cu(OAc)2 and urea solution in the presence of poly[(2-ethyldimethylammonioethyl methacrylate ethyl sulfate)-co-(1-vinylpyrrolidone)] (PQ11). Direct placing of the resultant dispersion on a glassy carbon electrode (GCE) without the use of an immobilization support matrix leads to very stable CuO nanoparticle-containing films with remarkable catalytic performance toward the oxidation of glucose. This sensor shows good response to glucose in comparison to other normally co-existing electroactive species (such as dopamine, ascorbic acid and uric acid). The linear detection range is estimated to be from 5 μM to 2.3 mM (r = 0.994), and the detection limit is estimated to be 0.5 μM at a signal-to-noise ratio of 3. More importantly, it suggests that this glucose sensor can be used for the glucose detection in human blood serum.

A Mechanistic Approach to the Influence of Surfactants on the Oxidation of Ethyl Mercaptan and its Dimer Ethyl Mercaptan Disulfide by Hexacyanoferrate(III) Ions in Aqueous Medium

Abstract In this paper we report on the rate of oxidation of ethyl mercaptan and its dimer ethyl mercaptan disulfide by alkaline hexacyanoferrate(III) along with its mechanistic pathway, spectrophotometrically. The influence of different experimental parameters, such as change in concentration of EtSH, HCF, OH − and reaction temperature was studdie. It was observed that the order of reaction decreases in [EtSH] or [OH − ] from first order to higher concentration, but it certainly did not tend towards zero order. The effect of surfactants on the rate of reaction was observed at the critical micelle concentration (CMC) of the surfactant and reported to be below the CMC. The investigators, thus, concluded that the added products have an insignificant effect on the reaction rate. Further, the activation parameters were evaluated which lend support to the proposed mechanism. The thermodynamic quantities were also determined and the binding parameters have also been evaluated using the Menger and Portnoy model.

CCDC 731289: 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.

Polyaniline/MnO2/porous carbon nanofiber electrodes for supercapacitors

Negative Solvatochromism of Ferrocenyl Methine Dyes

Abstract. A novel solvatochromic ferrocenyl methine dyes has been synthesized by condensation of ferrocen-3-caboxaldehyde with active methylene compounds under Knoevengel conditions and characterized by UV-vis in a range of solvents. Compound 1a has a red shift in π-π* and a blue shift increases with solvent polarity in the MLCT (M→A) while 1b-1d variation of red as well as blue shifts from both states. No d-d transition is observed in these compounds. These shifts are interpreted by different dipole moments in the ground and excited state as well as solvent interaction between solute/solvent and H-bonding with the acceptor.

Interaction of an Amphiphilic Drug and Sodium Bis(2-ethylhexyl)sulfosuccinate at Low Concentrations in the Absence and Presence of Sodium Chloride

Electrodeposition of cobalt-sulfide nanosheets film as an efficient electrocatalyst for oxygen evolution reaction

Analysis of surface and bulk properties of amphiphilic drug ibuprofen and surfactant mixture in the absence and presence of electrolyte

CoP Nanosheet Arrays Supported on a Ti Plate: An Efficient Cathode for Electrochemical Hydrogen Evolution

ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTCoP Nanosheet Arrays Supported on a Ti Plate: An Efficient Cathode for Electrochemical Hydrogen EvolutionZonghua Pu†, Qian Liu†, Ping Jiang‡, Abdullah M. Asiri§∥, Abdullah Y. Obaid§∥, and Xuping Sun*†§∥View Author Information† Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical engineering, China West Normal University, Nanchong 637002, Sichuan China‡ College of Chemistry, Chongqing Normal University, Chongqing 401331, Chongqing, China§ ∥ §Chemistry Department, Faculty of Science and ∥Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah 21589, Saudi Arabia*E-mail: [email protected]Cite this: Chem. Mater. 2014, 26, 15, 4326–4329Publication Date (Web):July 17, 2014Publication History Received7 April 2014Revised17 July 2014Published online23 July 2014Published inissue 12 August 2014https://pubs.acs.org/doi/10.1021/cm501273shttps://doi.org/10.1021/cm501273srapid-communicationACS PublicationsCopyright © 2014 American Chemical SocietyRequest reuse permissionsArticle Views6876Altmetric-Citations276LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-AlertscloseSupporting Info (1)»Supporting Information Supporting Information SUBJECTS:Catalysts,Electrical properties,Electrodes,Evolution reactions,Two dimensional materials Get e-Alerts

CCDC 845463: 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.

1-(1<i>H</i>-1,2,3-Benzotriazol-1-yl)-2-(4-methoxyphenyl)ethanone

In the title compound, C(15)H(13)N(3)O(2), the dihedral angle between the benzotriazole ring system (r.m.s. deviation = 0.0124 Å) and the benzene ring is 76.21 (3)°. The meth-oxy C atom deviates from its benzene ring plane by 0.063 (2)Å. In the crystal, inversion dimers linked by pairs of C-H⋯O hydrogen bonds generate R(2) (2)(12) loops.

Electropolymerization of cobalto(5,10,15-tris(4-aminophenyl)-20-phenylporphyrin) for electrochemical detection of antioxidant-antipyrine

Porphyrins are a kind of aromatic molecules possessing unique physic-chemical properties. In this manuscript, it was thus utilized to synthesize 5,10,15-tris(4-aminophenyl)-20-phenylporphyrin and cobalto(5,10,15-tris(4-aminophenyl)-20-phenylporphyrin). In addition, conducting cobalto(5,10,15-tris(4-aminophenyl)-20-phenylporphyrin) polymeric films were successfully prepared by electropolymerization approach on glassy carbon electrode in the presence of dimethyl formamide solution and 0.1 M tetra-n-butyl ammonium perchlorate at 100 mV/s scan rate. The synthesized polymeric films were evaluated as the active electrode materials to detect an antioxidant (Antipyrine) present in pharmaceuticals and the limit of detection is ~ 74 μM.

Sustainable Product Packaging Using Vegetables Fibres and Its Composite

4-(5,3′-Dimethyl-5′-oxo-2-phenyl-2′,5′-dihydro-2<i>H</i>-[3,4′]bipyrazol-1′-yl)benzenesulfonamide monohydrate

In the title compound, C(20)H(19)N(5)O(3)S·H(2)O, the pyrazole ring is connected to a pyrazolone ring, and the two five-membered rings are aligned at 45.0 (1)°. The pyrazole ring is connected to a phenyl ring and the two are twisted by 42.7 (1)°. Finally, the pyrazolone ring is connected to a benzene ring and the two are twisted by 19.5 (1)°. The N-H and -NH(2) portions and the solvent water mol-ecules are engaged in N-H⋯N, N-H⋯O and O-H⋯O hydrogen-bonding inter-actions to generate a three-dimensional network.

RuO₂ nanoparticle-decorated TiO₂ nanobelt array as a highly efficient electrocatalyst for the hydrogen evolution reaction at all pH values

RuO 2 nanoparticles decorated TiO 2 nanobelt on titanium plate is active for electrocatalytic hydrogen evolution, requiring overpotentials of 130, 143, and 380 mV to drive 100 mA cm −2 in 0.5 M H 2 SO 4 , 1.0 M KOH, and 1.0 M PBS solution, respectively.

Detection of Acetylcholine in an Enzyme‐Free System Based on a GCE/V2O5 NRs/BPM Modified Sensor

Abstract In this approach, vanadium pentoxide nanorods (V 2 O 5 NRs) were prepared by utilizing a facile wet‐chemical approach (WCA) in an alkaline phase at low temperatures then applied to detect acetylcholine. Various optical techniques, such as Ultra‐Violet spectroscopy (UV‐Visible), Fourier Transform Infra‐red spectroscopy (FTIR), Powder X‐ray Diffraction (XRD), Field Emission Scanning Emission Microscopy (FESEM), X‐ray Electron Dispersive Spectroscopy (XEDS) and X‐ray Photo‐electron Spectroscopy (XPS) were applied to analyse the V 2 O 5 NRs for structural, optical, functional, morphological and elemental analyses. Adjustment of the light weight fabrication of NRs onto Glassy carbon electrode (GCE) exhibited sensitive and selective acetylcholine sensor probe. Based on the stable current‐voltage relationship, analytical sensing parameters like sensitivity, Linear dynamic range (LDR), Limit of detection (LOD), Limit of quantification (LOQ), durability and interference measurement of the fabricated sensor (GCE/V 2 O 5 NRs/BPM) for acetylcholine detection were evaluated and reported in this paper. Here, Nafion was used as a binding polymer matrix (BPM) for the fabrication of flat GCE with V 2 O 5 NRs. Acetylcholine calibration curve was found to be linear throughout in a broad range of concentration of target acetylcholine analyte. Calibration curve was employed to calculate the sensing parameters such as sensitivity (101.27 nAμM −1 cm −2 ), LOD down to 11.58 pM, LOQ (38.60 pM) and LDR (100 pM∼100 μM) of the developed GCE/V 2 O 5 NRs/BPM sensor probe. The use of the facile WCA method for the synthesis of low‐dimensional V 2 O 5 NRs is a good strategy for developing an un‐doped nano‐material based sensor for enzyme‐free bio‐molecule recognition and detection via this electrochemical approach. The developed (GCE/V 2 O 5 NRs/BPM) sensor probe could be used to selectively detect acetylcholine in real biological samples by electrochemical method with satisfactory outcomes.