Abstracts

Chemicals, plastics and rubber industries

Search abstracts:

Nonlinear optical (NLO) properties of the octupolar molecule: structure-function relationships and solvent effects

Article Abstract:

Polyenes are nonlinear optical molecules that have the tendency to crystallize under certain conditions which make them unsuitable for device applications. This has prompted the study of nonlinear optical properties of octupolar molecules. Results have yielded only few characteristics of octupolar molecules. The ground transfer charge transfer increases as the alpha, beta and gamma phases increase. The equilibrium bond length alternation coordinate of the octupolar molecule varies due to molecular symmetry. The ground state charge transfer character has been found to be almost linearly proportional to the equilibrium bond length alternation.

Macromolecules, Polyenes

---

Bromine-AOT charge-transfer complexes and hydrogen-bond donor ability of water on AOT-isooctane-H2O reverse micelles and water-in-oil microemulsions

Article Abstract:

Reactions involving sodium bis(2ethylhexyl)sulfosuccinate (AOT) have been found to be useful as a surfactant that spontaneously aggregates into reverse micelles and water-in-oil microemulsions without the aid of a cosurfactant. Experiments in isooctane have revealed the presence of a charge transfer complex between bromine and monomeric AOT. This is in agreement with a very strong donor ability of AOT due to its sulfonate headgroup.

Water, Water chemistry, Ion exchange, Electron donor-acceptor complexes, Bromine

---

First evidence of simultaneous different kinetic behaviors at the interface and the continuous medium of w/o microemulsions

Article Abstract:

A study is carried out on the butylaminolysis reaction of 4-nitrophenyl caprate in OT/chlorobenzene/ water microemulsiosn, with the observed rate constant, k(obs), showing both first- and second-order dependence on butylamine concentration. The first-order term in [BuNH2] is due to the reaction occurring at the interface of the microemulsion while the second-order term is due to the reaction in the continuous medium.

Emulsions, Chemical properties, Butyl compounds

Similar abstracts:

• Abstracts: Dynamical arrest of electron transfer in liquid crystalline solvents. Reorganization energy of electron transfer in viscous solvents above the glass transition
• Abstracts: Dimethyl phosphate: stereoelectronic versus environmental effects. Density functional study of chromium oxide clusters: structures, bonding, vibrations and stability
• Abstracts: Applications to nonspherical molecules. Pure noble gases and their mixtures. Theory
• Abstracts: The physicochemical origins of coincident epitaxy in molecular overlayers: lattice modeling vs potential energy calculations
• Abstracts: Role of isomerization barriers in the pKa control of the retinal Schiff base: a density functional study. Electronic effects on the ground rotational barrier of polyene Schiff bases: a molecular orbital study

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.