Download e-book for kindle: Molecular organic materials by Jordi Fraxedas

By Jordi Fraxedas

ISBN-10: 0521834465

ISBN-13: 9780521834469

The curiosity in molecular natural fabrics is super, pushed through the necessity to locate new fabrics with fascinating homes. This booklet goals to deliver the fabrics and floor technology groups jointly, integrating physics and chemistry in a non-technical demeanour, making sure this attention-grabbing box might be understood through a multi disciplinary viewers. beginning with simple actual suggestions and artificial suggestions, the ebook describes how molecules gather into hugely ordered buildings as unmarried crystals and skinny movies, with examples of characterization, morphology and homes. unique emphasis is put on the significance of surfaces and interfaces. the ultimate bankruptcy supplies a private view on destiny chances within the box. Written for rookies and skilled chemists, physicists and fabric scientists, this can be an invaluable advent to the sector of molecular natural fabrics.

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Superconductivity will be discussed later and carbon nanotubes are a matter of intense research because of their extraordinary properties: metallic/semiconductor depending on helicity, larger stiffness, flexibility, chemical inertness, etc. , 1996). , 2001). Our last example is Mo3 S7 [(dmit)2 ]3 , a single-component material based on the trinuclear Mo3 S7 cluster (with idealized C3v symmetry) coordinated to three dithiolate ligands dmit (see Fig. , 2004). This solid exhibits sizeable intermolecular magnetic interactions together with a significant electron delocalization and contains, in addition, large open channels.

8◦ . Crystal structure from Robertson & White, 1945. (c) bc-plane of heptafulvalene. 03◦ . Crystal structure from Thomas & Coppens, 1972. 5 Molecular organic materials When classifying a given material according to its physical properties, the common tendency is to emphasize the most important property: metallicity, superconductivity, magnetic order, etc. , since the same material can behave differently when spanning the parameter hyperspace. The parameter hyperspace consists of the set of variables and will be defined in detail in Chapter 3.

1995. 14. (a) Mo3 S7 [(dmit)2 ]3 cluster and (b) view of the crystal structure of the Mo3 S7 [(dmit)2 ]3 solid parallel to the (001) plane. C, S and Mo atoms ¯ a= are represented by black, medium grey and light grey balls, respectively. 656 nm. , 2004. respectively, and E a ∼ 10 and E a ∼ 30 meV, respectively. The crystal structure of Mo3 S7 [(dmit)2 ]3 is hexagonal and is shown in Fig. 14(b). The 3D packing results in cavities with a diameter of 1 nm. This new semiconductor material leads to the possibility of obtaining a series of new materials by chemically modifying the cluster complex, which are also nanostructured, thus enabling in principle the introduction of other molecules (guest) in their structure (host).

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Molecular organic materials by Jordi Fraxedas


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