In this work we present the design, assembly and characterization of a tandem photoelectrochemical (PEC) cell based on two different crystallographic phases sub-stoichiometric copper telluride nanocrystals (NCs). The first one, pseudo-cubic phase, pc-Cu2-xTe, is characterized by positive photocurrents, while second hexagonal h-Cu2-xTe, favors negative ones. Taking advantage optoelectronic prope...

The charge-transfer interaction of different nucleobases with Cu2+ has been investigated by means of ESR and optical absorption studies. It could be shown that cytosine forms the strongest complex. The greatest reduction of Cu2+ (that is, spin concentration) was obtained, however, with adenine. Based on these results the following order for the electron donor strength of the nucleo­ bases has b...

In this study oxidation of low-density lipoprotein (LDL) induced by different Cu2+ concentrations was investigated. Lipid peroxidation was assessed by monitoring low-level chemiluminescence (LL-CL), conjugated diene hydroperoxide (CD) and alpha-tocopherol (TocOH), the major lipophilic antioxidant in LDL. At high Cu2+ concentration, LDL oxidation was characterised by CD formation, LL-CL emission...

Based on the defect model that the impurity Cu2+ in TiO2 on the octahedral Ti4+ site is associated with one oxygen vacancy VO along the C2 axis, the electron paramagnetic resonance (EPR) parameters, i. e., the g factors gi (i = x,y,z) and the hyperfine structure constants Ai, of the Cu2+– VOcenter in TiO2 are calculated by using the perturbation formulas of these parameters for a 3d9 ion in a r...

Reaction pathway investigations of the solvothermal preparation of nanocrystalline Culn1xGa xSe2 in triethylenetetramine reveal the early formation of a previously unreported CU2-xSe(S) intermediate. Over 24 hours, this reacts with In and Se species to form CulnSe2(s). If Ga is present, the reaction proceeds over an additional 48 hours to form Culn1xGa xSe2. Adding ammonium halide salts reduces...

Combining three-dimensional (3D) current collectors and zincophilic species is considered an efficient way to construct highly stable Zn metal anodes. Unfortunately, costly complex preparation processes impede their practical application. Herein, a dendrite-free 3D composite anode (Zn@ACC-600@Cu2+) has been rationally designed by plating on Cu2+-coordinated carbon cloth collector (ACC-600@Cu2+)...

A Cu2+ probe based on pyrene derivatives was introduced. Compared to other metal ions, it exhibited a highly selective and sensitive fluorescence response Cu2+.

A new fluorescent probe P derived from naphthalimide bearing a pyridine group has been synthesized and characterized. The proposed probe P shows high selectivity and sensitivity to Cu2+ in aqueous media. Under optimized conditions, the linear response of P (2 μM) toward Cu2+ was 0.05-0.9 μM in ethanol-water solution (3:2, v:v, 50 mM HEPES, pH 7.4), and the detection limit was 0.03 μM.

???????? ???????????????????? ?????????? ? ??????? ?????? ??????? ????????? ? ??????? Cr3+ Cu2+ NO3H2O. ? ?????? ???????????? ??????? ????? (III), ?????????? ?? ??????? ???? (II), ???????????? ??????? ???????. ??? ???????? ????? ???????????? «?. ?.». ???????????? ????????? ??? ???????????? ????? ???????? 0,01 ????/?, ??????? ????????? C^+:Cu2+ = 1:1, ?????? ???? 0,3 ????/? (NaNO3), ??????????? ...

The administration of flaxseed oil or flaxseed oil plus trientine in diabetic rats reduced triglyceride, very low density lipoprotein, and total cholesterol. Furthermore, the combined treatment significantly increased superoxide dismutase activity and attenuated serum Cu2+. The results suggest that the administration of flaxseed oil plus trientine is useful in controlling serum lipid abnormalit...