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Wednesday, September 15, 2021

09-15-2021-0256 - Surface science Polymer science or macromolecular science Solid-state chemistry materials chemistry Interface and colloid science

 Surface science is the study of physical and chemical phenomena that occur at the interface of two phases, including solidliquid interfaces, solid–gas interfaces, solid–vacuum interfaces, and liquidgas interfaces. It includes the fields of surface chemistry and surface physics.[1] Some related practical applications are classed as surface engineering. The science encompasses concepts such as heterogeneous catalysissemiconductor device fabricationfuel cellsself-assembled monolayers, and adhesives. Surface science is closely related to interface and colloid science.[2]Interfacial chemistry and physics are common subjects for both. The methods are different. In addition, interface and colloid science studies macroscopic phenomenathat occur in heterogeneous systems due to peculiarities of interfaces.

https://en.wikipedia.org/wiki/Surface_science


Interface and colloid science is an interdisciplinary intersection of branches of chemistryphysics, nanoscience and other fields dealing with colloidsheterogeneous systems consisting of a mechanical mixture of particles between 1 nm and 1000 nm dispersed in a continuous medium. A colloidal solution is a heterogeneous mixture in which the particle size of the substance is intermediate between a true solution and a suspension, i.e. between 1–1000 nm. Smoke from a fire is an example of a colloidal system in which tiny particles of solid float in air. Just like true solutions, colloidal particles are small and cannot be seen by the naked eye. They easily pass through filter paper. But colloidal particles are big enough to be blocked by parchment paper or animal membrane.

Interface and colloid science has applications and ramifications in the chemical industry, pharmaceuticals, biotechnology, ceramics, minerals, nanotechnology, and microfluidics, among others.

There are many books dedicated to this scientific discipline,[1][2][3][4] and there is a glossary of terms, Nomenclature in Dispersion Science and Technology, published by the US National Institute of Standards and Technology.[5]

https://en.wikipedia.org/wiki/Interface_and_colloid_science


Solid-state chemistry, also sometimes referred as materials chemistry, is the study of the synthesis, structure, and properties of solid phase materials, particularly, but not necessarily exclusively of, non-molecular solids. It therefore has a strong overlap with solid-state physicsmineralogycrystallographyceramicsmetallurgythermodynamicsmaterials science and electronics with a focus on the synthesis of novel materials and their characterisation. Solids can be classified as crystalline or amorphous on basis of the nature of order present in the arrangement of their constituent particles.[1]

https://en.wikipedia.org/wiki/Solid-state_chemistry


In chemistry, an atom cluster (or simply cluster) is an ensemble of bound atoms or molecules that is intermediate in size between a simple molecule and a nanoparticle; that is, up to a few nanometers (nm) in diameter. The term microcluster may be used for ensembles with up to couple dozen atoms.

Clusters with a definite number and type of atoms in a specific arrangement are often considered a specific chemical compound and are studied as such. For example, fullereneis a cluster of 60 carbon atoms arranged as the vertices of a truncated icosahedron, and decaborane is a cluster of 10 boron atoms forming an incomplete icosahedron, surrounded by 14 hydrogen atoms.

The term is most commonly used for ensembles consisting of several atoms of the same element, or of a few different elements, bonded in a three-dimensional arrangement. Transition metals and main group elements form especially robust clusters.[1] Indeed, in some contexts, the term may refer specifically to a metal cluster, whose core atoms are metals and contains at least one metallic bond.[2] In this case, the qualifier poly specifies a cluster with more than one metal atom, and heteronuclear specifies a cluster with at least two different metal elements. Naked metal clusters have only metal atoms, as opposed to clusters with outer shell of other elements. The latter may be functional groups such as cyanide or methyl, covalently bonded to the core atoms; or many be ligands attached by coordination bonds, such as carbon monoxidehalidesisocyanidesalkenes, and hydrides

However, the terms is also used for ensembles that contain no metals (such as the boranes and carboranes) and whose core atoms are held together by covalent or ionic bonds. It is also used for ensembles of atoms or molecules held together by Van der Waals or hydrogen bonds, as in water clusters.

Clusters may play an important role in phase transitions such as precipitation from solutionscondensation and evaporation of liquids and solids, freezing and melting, and adsorbtion to other materials.[citation needed]

https://en.wikipedia.org/wiki/Atom_cluster


Polymer science or macromolecular science is a subfield of materials scienceconcerned with polymers, primarily synthetic polymers such as plastics and elastomers. The field of polymer science includes researchers in multiple disciplines including chemistryphysics, and engineering.

https://en.wikipedia.org/wiki/Polymer_science


Fullerene chemistry is a field of organic chemistry devoted to the chemical properties of fullerenes.[1][2][3] Research in this field is driven by the need to functionalize fullerenes and tune their properties. For example, fullerene is notoriously insoluble and adding a suitable group can enhance solubility.[1] By adding a polymerizable group, a fullerene polymer can be obtained. Functionalized fullerenes are divided into two classes: exohedral fullereneswith substituents outside the cage and endohedral fullerenes with trapped molecules inside the cage.

This article covers the chemistry of these so-called "buckyballs," while the chemistry of carbon nanotubes is covered in carbon nanotube chemistry.

https://en.wikipedia.org/wiki/Fullerene_chemistry


coordination complex consists of a central atom or ion, which is usually metallicand is called the coordination centre, and a surrounding array of bound molecules or ions, that are in turn known as ligands or complexing agents.[1][2][3] Many metal-containing compounds, especially those of transition metals (d block elements), are coordination complexes.[4]

https://en.wikipedia.org/wiki/Coordination_complex


Microwave chemistry is the science of applying microwave radiation to chemical reactions.[1][2][3][4][5] Microwaves act as high frequency electric fields and will generally heat any material containing mobile electric charges, such as polar molecules in a solvent or conducting ions in a solid. Polar solvents are heated as their component molecules are forced to rotate with the field and lose energy in collisions. Semiconducting and conducting samples heat when ions or electrons within them form an electric current and energy is lost due to the electrical resistance of the material. Microwave heating in the laboratory began to gain wide acceptance following papers in 1986,[6] although the use of microwave heating in chemical modification can be traced back to the 1950s. Although occasionally known by such acronyms as MAOS (Microwave-Assisted Organic Synthesis),[7] MEC (Microwave-Enhanced Chemistry) or MORE synthesis (Microwave-organic Reaction Enhancement), these acronyms have had little acceptance outside a small number of groups.

https://en.wikipedia.org/wiki/Microwave_chemistry


Equilibrium chemistry is concerned with systems in chemical equilibrium. The unifying principle is that the free energy of a system at equilibrium is the minimum possible, so that the slope of the free energy with respect to the reaction coordinate is zero.[1][2] This principle, applied to mixtures at equilibrium provides a definition of an equilibrium constant. Applications include acid–basehost–guestmetal–complexsolubilitypartitionchromatography and redox equilibria.

https://en.wikipedia.org/wiki/Equilibrium_chemistry


Bioinorganic chemistry is a field that examines the role of metals in biology. Bioinorganic chemistry includes the study of both natural phenomena such as the behavior of metalloproteins as well as artificially introduced metals, including those that are non-essential, in medicine and toxicology. Many biological processes such as respiration depend upon molecules that fall within the realm of inorganic chemistry. The discipline also includes the study of inorganic models or mimics that imitate the behaviour of metalloproteins.[1]

As a mix of biochemistry and inorganic chemistry, bioinorganic chemistry is important in elucidating the implications of electron-transfer proteins, substrate bindings and activation, atom and group transfer chemistry as well as metal properties in biological chemistry. The successful development of truly interdisciplinary work is necessary to advance bioinorganic chemistry.[2]

https://en.wikipedia.org/wiki/Bioinorganic_chemistry


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