Chemicals and materials NaClO4, Pb(ClO4)2·3H2O, KClO4·3H2O, K3[Fe(CN)6], K4[Fe(CN)6], 6-mercaptohexanol, Tris(tris-(hydroxymethyl)-aminomethane), dimethyl sulfoxide (DMSO) were purchased from Sigma-Aldrich Inc. Ethylenediamine tetraacetic acid (EDTA), Ethylenediamine tetraacetic acid dipotassium salt (EDTA-2K) were purchased from J&K Scientific Ltd. Mg(ClO4)2 was purchased from Fluka. The oligo...

Intrinsically microporous polyamines (PIM-EA-TB) provide tertiary amine binding sites for protons and in this way allow switching/gating from a low ionic conductivity state to semipermeable anion through micropores. In ethanolic NaClO4 media PIM-EA-TB films (approx. 10 μm thick; deposited asymmetrically onto diameter microhole 5 thick Teflon) is lowered by ion exclusion compared observed aqueou...

In recent years, sodium-ion batteries (SIBs) have attracted much attention as an alternative to lithium-ion batteries. Hard carbon (HC) is a well-studied anode material for SIBs; however, the performance function of temperature less established. To investigate dependence HC, sodium half-cells with common NaClO4-based electrolyte were tested at temperatures from 10 80 °C. Capacity after 20 cycle...

Exposing native calf thymus DNA (in 0.1 M NaClO4, 5 mM cacodylic acid buffer, pH 6.81, 25 degrees C) to increasing concentrations of Hg(ClO4)2 produces dramatic changes in its circular dichroism (CD). Let r = [mol of added Hg(II)*/[mol DNA base]: the conservative CD spectrum of the DNA B-form, consisting of the 273 nm major (+) CD band, the 245 nm major (-) CD band, the 219 nm minor (+) CD band...

In this paper in situ visible electroreflectance measurements have been carried out in order to extract new electrochemical information from the dependence of R/R on the frequency of potential modulation. The behaviour of some typical components of a Au electrodeposition bath has been investigated: a metal salt (KAu(CN)2), a supporting electrolyte (NaClO4), a metal cation complexing agent (KCN)...

Various concentrations of Multi Walled Carbon Nanotubes (MCNT) fillers dispersed PVDF- HFP: NaClO4 nanocomposite polymer electrolytes (NPE) were prepared by solution casting technique. The dispersion MCNT nano raised the accessibility more ions for attaining highest conductivity. Electrical conductivity, Ohmic resistance (RΩ), Polarisation resistanace (Rp), and Warburg impedance (W) studied usi...

Differential scanning microcalorimetry (DSC), UV absorption and circular dichroism (CD) have been used to study structure and stability of linear (lin), open circular (oc), supercoiled (cd) and relaxed circular duplex (rd) DNA and calf thymus (CT) DNA. Investigations were made in low salt buffer and in the presence of 7.2 M NaClO4. The chaotropic action of perchlorate promotes a reduction of th...

The mixed adsorption layers of tetramethylthiourea and a cationic detergent formed at electrode surface in NaClO4 (1 mol dm) are described. The systems were characterized by the measurement of differential capacity, zero charge potential, and surface tension at this potential. The data were analyzed to obtain the surface pressure and relative surface excess of tetramethylthoiurea as a function ...

The kinetics of GSH oxidation to GSSG by cis-(diaqua)-bis-(ethylenediamine) cobalt(III) perchlorate was studied spectophotometrically under pseudo-first order condition using 10[Co(III)] = 5 mol dm, 2.5 ≤ 10[GSH] ≤ 10.00 mol dm, 3.5 ≤ pH ≤ 5.0, 318K ≤ T ≤ 333K at a fixed ionic strength I = 0.3 mol dm (NaClO4). The disappearance of [Co (III)] at 500 nm with time showed first-order kinetic trend....