Publications

Crystal structure of a new silver(I) coordination polymer assembled from imidazolidine-2-thione (Imt), {[Ag₂(Imt)₃](NO₃)₂}<i> _n </i>

Abstract A new polymeric silver(I) complex of imidazolidine-2-thione (Imt), {[Ag 2 (Imt) 3 ](NO 3 ) 2 } n ( 1 ) was prepared and its structure was determined by single-crystal X-ray diffraction analysis. The silver atoms form infinite chains with two Ag − S(Imt) − Ag strands linked to each other by sulfur atoms of μ 4 -Imt ligands. Each silver(I) ion is bound to four sulfur atoms of bridging Imt ligands in a distorted tetrahedral environment. The crystal structure is stabilized by hydrogen bonding and weak argentophilic interactions. The hydrogen bonded nitrate ions connect the 1D chains to generate a 2D layer structure.

An investigation of the thermal decomposition of nickel citrate as a precursor for Ni NiO composite nanoparticles

GCN/CuFe2O4/SiO2 photocatalyst for photo-Fenton assisted degradation of organic dyes

Fluorescence, Photophysical Behaviour and DFT Investigation of E,E-2,5-bis[2-(3-pyridyl)ethenyl]pyrazine (BPEP)

Mechanochemical Gold(III)‐Carbon Bond Formation

Starting from a [(^MeO C^N^C)AuCl] complex as precursor, a direct substitution by C,H-activation from sp-, sp² - or sp³ -C,H-bonds under basic conditions in a planetary ball mill was achieved. Because of the extraordinary photophysical properties of the target compounds, this protocol provides an easy access to a highly valued complex class. In contrast to existing protocols, no pre-functionalization of the starting materials is necessary and the use of expensive transition metal catalysts can be avoided, which makes this application appealing also for industrial purposes. In addition the methodology was not restricted to pincer complexes, which was demonstrated by the substitution of chelate type [(tpy)AuCl₂ ] complexes.

A Cost‐Effective 3D Hydrogen Evolution Cathode with High Catalytic Activity: FeP Nanowire Array as the Active Phase

Iron is the cheapest and one of the most abundant transition metals. Natural [FeFe]-hydrogenases exhibit remarkably high activity in hydrogen evolution, but they suffer from high oxygen sensitivity and difficulty in scale-up. Herein, an FeP nanowire array was developed on Ti plate (FeP NA/Ti) from its β-FeOOH NA/Ti precursor through a low-temperature phosphidation reaction. When applied as self-supported 3D hydrogen evolution cathode, the FeP NA/Ti electrode shows exceptionally high catalytic activity and good durability, and it only requires overpotentials of 55 and 127 mV to afford current densities of 10 and 100 mA cm(2) , respectively. The excellent electrocatalytic performance is promising for applications as non-noble-metal HER catalyst with a high performance-price ratio in electrochemical water splitting for large-scale hydrogen fuel production.

Fabrication of polyetherimide nanocomposite membrane with amine functionalised halloysite nanotubes for effective removal of cationic dye effluents

A novel strategy to synthesize Au nanoplates and their application for enzymeless H2O2 detection

CCDC 989549: 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.

4-(4-Chlorophenyl)-8-methyl-2-oxo-1,2,3,4,4a,5,6,7-octahydroquinoline-3-carbonitrile

In the title compound, C(17)H(17)BrN(2)O, the N-containing ring adopts an envelope conformation with the C atom carrying the phenyl ring displaced by -0.531 (9) Å from the plane defined by the remaining five atoms (r.m.s. deviation = 0.0099 Å). The benzene ring is almost orthogonal to the ring to which it is attached, the C(CN)-C-C(Ph)-C(Ph) torsion angle being -101.3 (7)°. The cyclo-hexene ring is disordered over two conformations in a statistical ratio. The most prominent inter-actions in the crystal are pairs of N-H⋯O hydrogen bonds between inversion-related mol-ecules. The resulting dimers are linked into a three-dimensional architecture by C-H⋯N, C-H⋯Br and C-H⋯π inter-actions.

Photocatalytic synthesis of highly dispersed Pd nanoparticles on reduced graphene oxide and their application in methanol electro-oxidation

In this communication, we present a green photocatalytic method for the synthesis of highly dispersed Pd nanoparticles (PdNPs) with an average diameter of ca.10 ± 1 nm on the surface of reduced graphene oxide (RGO), using tin(IV) porphyrin (SnP) as a photocatalyst for the reduction of both graphene oxide (GO) and Pd(II). The as-prepared PdNPs–RGO nanocomposites exhibit higher electrocatalytic activities than the commercial Pd/C catalyst for methanol electro-oxidation in alkaline media.

4-(3-Methyl-4,5-dihydro-1<i>H</i>-benzo[<i>g</i>]indazol-1-yl)benzenesulfonamide

In the title compound, C(18)H(17)N(3)O(2)S, the aromatic ring bearing the sulfamide unit is aligned at 61.65 (1)° with respect to the pyrrole ring; its amino group forms N-H⋯N and N-H⋯O hydrogen bonds to neighboring mol-ecules, generating sheets in the ac plane.

(<i>E</i>)-1-(2,5-Dimethyl-3-thienyl)-3-(2-hydroxyphenyl)prop-2-en-1-one

In the title compound, C(15)H(14)O(2)S, the dihedral angle between the aromatic rings is 8.46 -(8)°. The central enone group is planar (r.m.s. deviation = 0.0267 Å) and is oriented at a dihedral angle of 1.20 (9)° with respect to the benzene ring and at 8.27 (9)° with respect to the thio-phene group. In the crystal, the mol-ecules are linked into polymeric chains extending along the b axis due to inter-molecular O-H⋯O hydrogen bonding. An S(6) ring motif is formed due to a short intra-molecular C-H⋯O contact. C-H⋯π inter-actions involving a methyl group of the 2,5-dimethyl-thienyl group and the benzene ring are present. π-π inter-actions between the centroids of the benzene and heterocyclic rings [3.7691 (9) Å] also occur.

N3-Sensitized TiO2/Nb2O5: A Novel Bilayer Structure for Dye-Sensitized Solar-Cell Application

Core–shell CoFe₂O₄@Co–Fe–Bi nanoarray: a surface-amorphization water oxidation catalyst operating at near-neutral pH

The exploration of high-performance and earth-abundant water oxidation catalysts operating under mild conditions is highly attractive and challenging. In this communication, core-shell CoFe₂O₄@Co-Fe-Bi nanoarray on carbon cloth (CoFe₂O₄@Co-Fe-Bi/CC) was successfully fabricated by in situ surface amorphization of CoFe₂O₄ nanoarray on CC (CoFe₂O₄/CC). As a 3D water oxidation electrode, CoFe₂O₄@Co-Fe-Bi/CC shows outstanding activity with an overpotential of 460 mV to drive a geometrical catalytic current density of 10 mA cm^-2 in 0.1 M potassium borate (pH 9.2). Notably, it also demonstrates superior long-term durability for at least 20 h with 96% Faradic efficiency. Density functional theory calculations indicate that the conversion from OOH* to O₂ is the rate-limiting step and the high water oxidation activity of CoFe₂O₄@Co-Fe-Bi/CC is associated with the lower free energy of 1.84 eV on a Co-Fe-Bi shell.

Electrochemical determination of olmesartan medoxomil using hydrothermally prepared nanoparticles composed SnO2–Co3O4 nanocubes in tablet dosage forms

Novel combination of zero-valent Cu and Ag nanoparticles @ cellulose acetate nanocomposite for the reduction of 4-nitro phenol

Bioinspired, Ultrastrong, Highly Biocompatible, and Bioactive Natural Polymer/Graphene Oxide Nanocomposite Films

Tough and biocompatible nanocomposite films: A new type of bioinspired ultrastrong, highly biocompatible, and bioactive konjac glucomannan (KGM)/graphene oxide (GO) nanocomposite film is fabricated on a large scale by a simple solution-casting method. Such KGM-GO composite films exhibit much enhanced mechanical properties under the strong hydrogen-bonding interactions, showing great potential in the fields of tissue engineering and food package.