@article{bui_khaledi_2002, title={Determination of vesicle-water partition coefficients by electrokinetic chromatography: Study of temperature effect}, volume={253}, ISSN={["1095-7103"]}, DOI={10.1006/jcis.2002.8496}, abstractNote={Vesicular electrokinetic chromatography was used to investigate solute partitioning from the aqueous phase into dihexadecyl hydrogen phosphate (DHP) vesicles. Retention factors of neutral solutes are related to their partition coefficients between the aqueous phase and vesicles (K(vw)). The K(vw) of the aromatic test solutes were readily obtained from the slopes of the linear relationships between retention factors versus DHP concentrations. The technique offers the advantages of speed, automation, and small sample size for determination of partition coefficients. The K(vw) values of 43 uncharged solutes were measured at below as well as above the phase transition temperatures. The logarithms of partition coefficients (log K(vw)) of solutes at 71 degrees C (above T(c)) were slightly higher than those at 36 degrees C (below T(c)). The solvation characteristics of DHP were also studied using linear solvation energy relationships at the two temperatures.}, number={2}, journal={JOURNAL OF COLLOID AND INTERFACE SCIENCE}, author={Bui, HH and Khaledi, MG}, year={2002}, month={Sep}, pages={397–401} }
 @article{agbodjan_bui_khaledi_2001, title={Study of solute partitioning in biomembrane-mimetic pseudophases by electrokinetic chromatography: Dihexadecyl phosphate small unilamellar vesicles}, volume={17}, ISSN={["0743-7463"]}, DOI={10.1021/la001120n}, abstractNote={Solute partitioning into vesicles of dihexadecyl hydrogen phosphate (DHP) was investigated by electrokinetic chromatography (EKC). The ionic double-chain surfactant forms bilayer structures that mimic a biological membrane when dispersed in aqueous media. The linear solvation energy relationship (LSER) was used to gain insights about the nature of interactions and parameters that influence the partitioning process into vesicles, micelles, and n-octanol. The Gibbs free energies of transfer of selected functional groups from aqueous to vesicular phases were compared to those in micellar pseudophases of sodium dodecyl sulfate (SDS) and sodium dodecyl phosphate (SDP). Size and hydrogen bond acceptor strength of solutes are the main factors that determine their partitioning behavior, while dipolarity and polarizability play minor, yet significant, roles. It was determined that the cohesiveness of solute microenvironments in DHP vesicles is between those for micells and n-octanol. Vesicles are weaker hydrogen b...}, number={10}, journal={LANGMUIR}, author={Agbodjan, AA and Bui, H and Khaledi, MG}, year={2001}, month={May}, pages={2893–2899} }