thermodynamic study on the interaction of β-cd with poly ethylene oxide and poly acrylic acid was performed by isothermal titration calorimetry at 298k. when β-cd is added to the interpolymer complex, competition is created between host-guest and hydrogen bond. enthalpy of interaction between the β-cd and interpolymer complex was calculated using the extended solvation theory. p=1 shows that wi...

It is now generally agreed that the electrochemical reduction of ethylene carbonate ~EC! plays an important role in the formation of an effective solid electrolyte interface layer on the carbon anode in lithium-ion cells. However, neither the composition of this layer nor the reaction pathways involved in its formation have been clearly established. We report reflectance infrared spectra from a...

Block copolymers are able to reverse multidrug resistance (MDR) of tumor cells by a yet unknown mechanism. The drug efflux system's direct and indirect inhibition mediated by polymer P-glycoprotein (Pgp) interactions or adenosine triphosphate (ATP) depletion, respectively, may be involved in MDR reversal as well as damage to the membrane barrier caused by polymer insertion into the membrane. To...

Literature describes kinetics of reactions of alcohols, phenols, carboxylic acids, amines and amides with oxiranes such as ethylene oxide and propylene oxide. However, there is no information regarding kinetic of reaction of imides with oxiranes. In this article the kinetics of the reaction of cyclic monoimides: succinimide, phtalimide, and glutarimide, with ethylene and propylene oxides in pre...

Traditionally in superhydrophobic surfaces history, the focus has frequently settled on the use of complex processing methodologies using nonbiodegradable and costly materials. In light of recent events on lab-on-paper emergence, there are now some efforts for the production of superhydrophobic paper but still with little development and confined to the fabrication of flat devices. This work gi...

Mesostructured silica-block copolymer thin films are demonstrated to provide orientationally ordered host matrixes for stable alignment of coassembled porphyrin J-aggregates with anisotropic optical properties. Visible light at 490 nm was absorbed anisotropically (A|/A⊥ ) 1.35) by aligned, hexagonally ordered (ethylene oxide)20-(propylene oxide)70-(ethylene oxide)20 (P123) triblock copolymer/si...

A pillar[5]arene with mono(ethylene oxide) substituents could form a highly stable [2]pseudorotaxane with a rigid guest both in solution and in the solid state.