An Au/SnO-SnO nanosheet based composite used for rapid detection of hydrogen sulphide.

In this work, a new type of HS sensor was fabricated by means of drop-coating of an Au/SnO-SnO nanosheet material, which was prepared by a one-pot hydrothermal reaction, onto a gold electrode in an alumina ceramic tube with the formation of a thin nanocomposite film. The microstructure and morphology of the nanosheet composites were characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). A gas-sensitivity study presented good HS-sensing performance of such Au/SnO-SnO nanosheet composites.

ZnO@CuO hollow nanosphere-based composites used for the sensitive detection of hydrogen sulfide with long-term stability.

In this study, zinc oxide@cupric oxide hollow nanospheres (ZnO@CuO HNS, 330 nm in diameter) were successfully prepared by a hard-template method using amino-phenolformaldehyde resin spheres (APF) as the templates. A new type of thin-film gas sensor toward hydrogen sulfide (HS) was fabricated by means of drop-coating on the gold electrode of an alumina ceramic tube. The microstructure and morphology of the nanosphere composites were characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM), and the gas-sensing performance of the composites toward the detection of HS were investigated.

A Bifunctional Luminescent Metal-Organic Framework for the Sensing of Paraquat and Fe Ions in Water.

The hydrothermal reaction of Zn ions with a mixture of two ligands, Hcptpy and H btc (Hcptpy=4-(4-carboxyphenyl)-2,2':4',4''-terpyridine; H btc=1,3,5-benzenetricarboxylic acid), led to the formation of a 3D metal-organic framework (MOF) with 1D channels, [Zn (cptpy)(btc)(H O)] (1), which was structurally characterized by using single-crystal X-ray diffraction (SXRD). In MOF 1, two independent Zn ions were interconnected by btc ligands to form a 1D chain, whilst adjacent Zn ions were alternately bridged by cptpy ligands to generate a 2D sheet, which was further linked by 1D chains to form a 3D framework with a new (3,3,4,4)-connected topology. Furthermore, compound 1 also exhibited excellent stability towards air and water and, more importantly, luminescence experiments indicated that it could serve as a probe for the sensitive detection of paraquat (PAQ) and Fe ions in aqueous solution.

Prediction of boiling points of organic compounds by QSPR tools.

The novel electro-negativity topological descriptors of YC, WC were derived from molecular structure by equilibrium electro-negativity of atom and relative bond length of molecule. The quantitative structure-property relationships (QSPR) between descriptors of YC, WC as well as path number parameter P3 and the normal boiling points of 80 alkanes, 65 unsaturated hydrocarbons and 70 alcohols were obtained separately. The high-quality prediction models were evidenced by coefficient of determination (R(2)), the standard error (S), average absolute errors (AAE) and predictive parameters (Qext(2),RCV(2),Rm(2)).

A novel fluorescent probe for copper ions based on polymer-modified CdSe/CdS core/shell quantum dots.

Quantum dots (QDs) have become one of the most attractive fields of current research because of their unique optical properties. Novel copper-sensitive fluorescent fluoroionophores based on CdSe/CdS core/shell QDs modified with a polymer of MAO-mPEG were synthesized and characterized in the present work. A pH of 6.

A reusable capacitive immunosensor based on a CuS ultrathin film constructed by using a surface sol-gel technique.

A capacitive sensing method based on a CuS ultrathin film modified electrode prepared by a surface sol-gel technique has been developed for the direct detection of human IgA. The resulting CuS film was investigated with cyclic voltammetry (CV), impedance spectroscopy, and quartz crystal microbalance (QCM). CV and impedance examinations showed that the CuS film formed on the gold electrode surface was insulated, and was applicable to form an insulating layer of a capacitive immunosensor.

Triaqua(2-{[(E)-5-formyl-2-oxidobenzyl-idene]amino}ethanesulfonato)cobalt(II) dihydrate.

The title compound, [Co(C(10)H(9)NO(5)S)(H(2)O)(3)]·2H(2)O, is a cobalt-Schiff base complex derived from taurine. There are two complex mol-ecules and four solvent water mol-ecules in the asymmetric unit. The central Co atom is six coordinated by two O atoms and one N atom of the ligand and three O atoms of water mol-ecules, forming a slightly distorted octa-hedral geometry.

Di-mu-hydroxo-bis[aqua(1,10-phen-anthroline-kappa2N,N')copper(II)] trans-bis(2-([(E)-5-formyl-2-oxido-kappaO-benzylidene]amino-kappaN)ethanesulfonato(2-))copper(II) hexahydrate.

The title compound, [Cu(2)(OH)(2)(C(12)H(8)N(2))(2)(H(2)O)(2)][Cu(C(10)H(9)NO(5)S)(2)].6H(2)O, is comprised of a copper-centred complex cation and a copper-centred complex anion; the cation lies about an inversion centre and in the anion the Cu atom lies on an inversion centre. In the doubly charged bridged dicopper cation, each Cu centre has distorted square-pyramidal geometry.