Quantitative Analysis of Tenofovir by Titrimetric, Extractive Ion-pair Spectophotometric and Charge- Transfer Complexation Methods

Thermodynamic Study of the Ion-Pair Complexation Equilibria of Dye and Surfactant by Spectral Titration and Chemometric Analysis

Surfactant-dye interactions are very important in chemical and dyeing processes. The dyes interact strongly with surfactant and show new spectrophotometric properties, so the UV-vis absorption spectrophotometric method has been used to study this process and extract some thermodynamic parameters. In this work, the association equilibrium between ionic dyes and ionic surfactant were studied by a...

Spectrophotometric Determination of Trimebutine Through Ion- Pair and Charge- Transfer Complexation Reactions

Extractive Spectrophotometric Determination of Nisoldipine by Ion-pair Complex Formation

Nisoldipine, a 1-4-dihydropyridine drug is determined by the development of simple and sensitive Extractive Spectrophotometric method. In the present study an ion-pair complex of amino derivative of the Nisoldipine with Bromocresol Green Solution in acidic medium is formed with subsequent extraction of the ion-pair complex in Chloroform. Maximum absorption was seen at the wavelength of 418 nm t...

Charge-Transfer Complexation of C with Diphenyltetrathiafulvalene

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...

Application of Ion Pair Extractive Spectrophotometric Methods for the Determination of Gabapentin in Pharmaceutical Formulation

Two new simple, selective, sensitive and economical methods (A and B) have been developed for the analysis of gabapentin in pure and dosage form. The methods were based on ion-pair complexation between drug and dyes like metanil yellow and thymol blue at an optimum pH of 2.8. The colored chromogens were measured at 410 nm (λmax) for method A and 550 nm (λmax) for method B. Calibration curve was...