the complex formed as a consequence of the interaction between the electron-acceptor p-chloranilic acid and an electron donor tamoxifen citrate was employed in the assay of the drug in pure powder and tablets. chloranilic acid was found to form a charge-transfer complex in a 1:1 stoichiometric ratio, with tamoxifen citrate. the wavelength of maximum absorption for the complex was found to be 55...

An in-depth study of the ion transfer facilitated by complexation in the organic phase (TOC mechanism) in liquid membrane systems of one and two polarized interfaces is carried out by taking into account the kinetic effects associated with the complexation reaction. Explicit analytical equations for the normal pulse voltammetric (I/E) and chronoamperometric (I/t) responses with an explicit depe...

The complexation of alkali-metal cations with calix[4]arene tertiary amide derivative (L) was studied in N-methylformamide (NMF), N,N-dimethylformamide (DMF), and dimethyl sulfoxide (DMSO) by means of microcalorimetric and UV spectrophotometric titrations. The Gibbs energies, enthalpies, and entropies for transfer of reactants and products from N-methylformamide to other solvents were determine...

m 0 7 r m a d s a t p f t u 4,4*-Diphenyltetrathiafulvalene (DPTTF) capped gold nanoarticles of 3to 5-nm diameter have been prepared and their hermal stability has been investigated by variable temperature T–IR spectroscopy. The DPTTF molecules at the cluster surface ndergo charge-transfer complexation with C60 to form Au/ PTTF.C60. Direct evidence of complexation is observed in the -ray photoe...

The charge-transfer complexation reaction between iodine and dibenzo- 18-crown- 6 (DB18C6) has been studied spectrophotometrically in chloroform solution at different temperatures. The resulting donor-acceptor complex was formulated as (DB 18C6…I )I . The spectrophotometric results , as well as the conductivity measurements, indicated that the gradual release of tiiodide ion from its contac...

Self-assembly allows new opportunities to control the morphology and properties of fullerenebased materials. By using the electron-accepting underivatized C60 and electron-donating pyridine groups of a polystyrene-block-poly(4-vinylpyridine), PS-block-P4VP, we here show the first example that charge-transfer complexation between fullerenes and block copolymers can essentially modify the self-as...

Two robust divalent complexes have been successfully constructed by using complementary rigid spacers (anthracene vs. 1,4,5,8-naphthalenediimide (NDI)) and two pairs of [24]crown-8 ethers and secondary dialkylammonium functionalities as binding motifs. It was demonstrated that properly selected, rigid spacers are more efficient than flexible ones for achieving strong multivalent association. Th...

Electron transfer between Ar2+ and N2 involves both complexation direct dynamics; a stripping-style pathway generates ArN+.

We herein find that graphene oxide (GO) can enhance the fluorescence signal of conjugated polyelectrolytes (CPEs) with charge transfer characteristics under certain conditions, which is due to a relative hydrophobic environment of CPEs upon complexation with GO.