منابع مشابه
Effects of Long-chain Molecules on the Population and Orientation of Organic Molecules at the Air/Water Interface
The effects of pentaand hexadecanoic acids on the population and orientational structure of p-nitrophenol, at the airlwater interface at a bulk pH of 2, have been studied by using the technique of second-harmonic generation. The results indicate that, with increasing fatty acid at the interface, (1) the population of p-nitrophenol at the airlwater interface first increases and then decreases, (...
متن کاملExtension of Linear Isotherm Regularity to Long Chain Alkanes
In this work, we consider each normal alkane as a hypothetical mixtureof methyland methylene groups, in which the interaction potential of each pair is assumed to be the average effective pair potential. Then, the LIR equation of state (EOS) is extended for such a hypothetical mixture. Also, three basic compounds, namely, propane, n-butane and cyclohexane, are used to obtain the contributio...
متن کاملStructural Properties of Phospholipid-based Bilayers with Long-Chain Alcohol Molecules in the Gel Phase.
The structural properties of two-component gel-phase bilayers of distearylphosphatidylcholine (DSPC) and alcohol molecules with different compositions and chain lengths (12-24 carbons long) are studied via molecular dynamics simulations. Several bilayer properties, including area per lipid, tilt angle, chain interdigitation, and headgroup offset, are studied for each system and compared, reveal...
متن کاملSurface freezing in chain molecules: Normal alkanes
B. M. Ocko, 1 X. Z. Wu, 2,3 E. B. Sirota, 4 S. K. Sinha, 5 O. Gang, 6 and M. Deutsch 6 Physics Department, Brookhaven National Laboratory, Upton, New York 11973 Physics Department, Northern Illinois University, DeKalb, Illinois 60115 Material Sciences Division, Argonne National Laboratory, Argonne, Illinois 60439 Exxon Research and Engineering Company, Route 22 East, Annandale, New Jersey 08801...
متن کاملA Hard Convex Core Yukawa Equation of State for Nonassociated Chain Molecules
The compressibility factor of nonassociated chain molecules composed of hard convex core Yukawa segments was derived with SAFT-VR and an extension of the Barker-Henderson perturbation theory for convex bodies. The temperature-dependent chain and dispersion compressibility factors were derived using the Yukawa potential. The effects of temperature, packing fraction, and segment number on the com...
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ژورنال
عنوان ژورنال: Nature
سال: 1969
ISSN: 0028-0836,1476-4687
DOI: 10.1038/223426c0