Molecular Interfaces

ISBN-13: 9783110452488 / Angielski / Miękka / 2020 / 310 str.

Hubert Motschmann;Matthias Hofmann

Opis

Interfaces between bulk media usually are the reaction sites dominating the macroscopic properties of the entire system. Understanding self-organization of molecules at interfaces and their properties is thus crucial in colloid and interface science. This books covers theories for describing molecules at interfaces, presents spectroscopic techniques to experimentally determine molecular properties, as well as computational methods for simulation.

Spis treści

From theContent:

Condensed phase are the consequence of intermolecular forces
- Van der Waals forces are short range and weak
-Keesom
- Debye
-London
-Overlap repulsion
-Lennard Jones Potential describes intermolecular attractive and repulsive interaction

MD simulations
-Pair correlation Kirkwood buff MD

Surface tension: Molecules at an interface are differently bound as compared to the bulk
-Measuring surface tensions
-Ring technique
-Pendent drop
-Oscillating bubble devices
-Very low surface tensions: Spinning drop
-Facettes of surface tension: Minimizing surface area
-Steiner Network Problem: calculus of variation

Five laws of interfacial engineering: Minimizing surface free energy
-Hamakerer law: The summation of short range intermolecular interaction lead to strong and long range interaction between colloidal objects
- Kelvin law: There is a barrier in forming new phases
-Young law governs the wetting properties
-Laplace law Cuvature matters
-Gibbs law: reducing G by adsorption

Experimental technique
-Surface force apparatus
-AFM colloidal Probe
-X-ray and neutron reflectometry
-QCM
-Optical reflection techniques
-Nonlinear optical technique of the second order

Classical problems seen in the light of new experiments
-Ions at interface
-Ions may adopt a nonmonotoneous concentration profile
-Interfacial water as a sensitive probe
-Hofmeister effects
-Wetting phenomena
-Microstructures surfaces
- Surving under extrem conditios
-Adsorption phenomena
-Illuminating the molecular architecture

Nonequilibrium states and dynamics
-Surface rheology
-Different time scales need different instrumentations
-Langmuir
-Oscillating drop
-Oscillating bubble
-Foams

Assembly: designing complex molecular architecture
-Layer-by layer technique
-Self assembled monolayers
-Stimuli responsive systems
-Adsorption
-What is at the interface
-How much is at the interface isotherm kinetics
-Combining techniques QCM
-Nonequlibrium states dynamics
-Experimental techniques
-X-ray
-Neutronscattering
- Optical reflection
-AFM
-Organization in two dimension Langmuir
-Wetting properties

O autorze

Hubert Motschmann and Matthias Hofmann, University of Regensburg, Germany.