Four novel [Sr(thd)2(L)]n (n=2; L=diethylenetriamine (I), n=1; L=triethylenetetramine (II), tetraethylenepentamine (III), and tris(2-aminoethyl)amine (IV)) complexes were synthesized by the reaction of Sr(thd)2 with corresponding polyamines in THF and characterized by FTIR, 1H NMR and single-cry...

In order to investigate the molecular structure of aurothioglucose (ATG), six stable, well-known conformations of glucopyranose (Gp) have been computed and compared with Gp, thioglucopyranose (TGp), monomeric aurothioglucose (MATG), and dimeric aurothioglucose (DATG) models. The study has been p...

The methylchlorodisilanes MeCl2SiSiCl2Me, MeCl2SiSiClMe2 and MeCl2SiSiMe3 disproportionate in the presence of nucleophilic catalysts into the methylchlorosilanes MeSiCl3, Me2SiCl2, Me3SiCl and the polysilanes SinMenCln+2, SinMen+1Cln+1 and SinMen+2Cln (n=3–5). Qualitative kinetic studies ...

The methylchlorodisilanes SiCl2MeSiCl2Me (1), SiCl2MeSiClMe2 (2) and SiClMe2SiClMe2(3) disproportionate in the presence of a basic catalyst into methylchloromonosilanes and various methylchlorooligosilanes. Oligosilanes involving up to seven silicon atoms were identified by means of 29Si-,...

Iodine is an essential trace element for humans and grazing animals and is often deficient. Our aim was to investigate the role of soil properties in retaining and ‘fixing' iodine in soils and thereby controlling its phyto-availability to grass. Soils were spiked with labelled 129IO3− and ...

Two new spirobifluorene-based conjugated microporous polymers, TS-TAD and TS-TADP, were constructed via Friedel-Crafts coupling reactions. TS-TAD and TS-TADP possess high BET surface area of 828 and 783 m2 g−1, large pore volume of 1.51 and 0.54 cm3 g−1, good stability, and display excellent gue...

Different from starch and amylose [(1 → 4)-α-D-glucopyranan], cellulose [(1 → 4)-β-D-glucopyranan] or wood fiber (natural cellulose or cellulose I) and paper (re-generated cellulose or cellulose II) have been believed for long years in many papers and high-school textbooks that they do not f...

Cross-linked chitosan (CCS) microspheres tethered with melamine-conjugated poly(hydroxyethyl methacrylate) (PHEMA) brushes were synthesized by combination of surface-initiated atom transfer radical polymerization (ATRP) of HEMA and subsequent covalent immobilization of melamine onto the chain en...

Human recombinant Cu,Zn-SOD was reacted with peroxynitrite in a reaction mixture containing 150 mM potassium phosphate buffer (pH 7.4) 25 mM sodium bicarbonate, and 0.1 mM diethylenetriamine pentaacetic acid. Disappearance of fluorescence emission at 350 nm, which could be attributed to modifica...

Three different polyaminocarboxylate-based bifunctional NE3TA (7-[2-[carboxymethyl)amino]ethyl]-1,4,7-triazacyclononane-1,4-diacetic acid) chelating agents were synthesized for potential use in copper 64-PET imaging applications. The bifunctional chelates were comparatively evaluated using trans...

High kinetic stability is an important requirement for the Gd3+ complexes used as contrast enhancement agents in magnetic resonance imaging. The kinetic stabilities of the Gd3+ complexes formed with DTPA-N-mono(methylamide) (L3), DTPA-N′-mono(methylamide) (L2) and DTPA-bis(methylamide) (L1) are...

Here, electrochemical determination of lead (Pb2+) and copper (Cu2+) ions, by using diethylenetriamine pentaacetic acid (DTPA) functionalized dopaminated Fe3O4 (Fe3O4/DA) magnetic nanoparticles, MNPs, (Fe3O4/DA/DTPA), is reported. First, step by step construction of Fe3O4/DA/DTPA was characteriz...

Here, the new biosensor destined for screening of interactions between kinase JAK2 and compounds which may act as inhibitors was presented. The Cu(II) complex of pentetic acid thiol ligand was applied for immobilization of kinase JAK2 on the gold electrode surface through his-tagged chemistry. T...

Disposal of heavy metal-polluted biomass obtained from bioremediation through harmless approaches is a big challenge. In this work, we investigated the effects of pyrolysis temperatures on the conversion of exhausted Cu(II)-laden biomass into Cu nanoparticles (NPs) embedded biochar composite (CB...

A study was carried out to determine if the well-documented diethylenetriamine pentaacetic acid (DTPA)-induced reproductive impairment in the cladoceran, Daphnia carinata, could be attributed to chelation, and subsequent limitation of one or any of the four important trace metals, iron (Fe), cop...

Four lanthanide metal (Dy, Ho, Er, Yb) complexes with diethylenetriamine-N,N,N′,N″,N″-pentaacetic acid (H5dtpa) have been prepared and characterized by using their infrared absorption spectra and thermal analyses. The crystal and molecular structures of (NH4)2[M(dtpa)]·4H2O (M: Dy, Ho, Er, Y...

Single-phase samples of cadmium pyroniobate and metaniobate were successfully prepared by solid-state synthesis. The crystal structures of cadmium niobates were refined by full-profile fitting of X-ray powder diffraction patterns. The thermal behavior of cadmium niobates in air was studied by th...

Herein, we report visible light active mesoporous cadmium bismuth niobate (CBN) nanospheres as a photocatalyst for hydrogen (H2) generation from copious hydrogen sulfide (H2S). CBN has been synthesized by solid state reaction (SSR) and also using combustion method (CM) at relatively lower temper...

A highly sensitive ambient light sensor based on surface acoustic waves (SAWs) was investigated. The ambient light SAW sensor is fabricated by depositing sensitive film and its resonant frequency shift was calculated in response to a change in light intensities. The resonant frequency is generat...

This paper reports the formation processes of crystalline Cd nanostructures on ion-cut surfaces of cadmium niobate pyrochlores (Cd2Nb2O7). Irradiation with 3 MeV He+ ions has been performed at low temperatures (⩽295 K) to induce material decomposition and aggregation of host atoms. The irradiati...