Organic molecules bithiophene

Organic molecules such as aniline, pyrrole and 2,2 -bithiophene have been intercalated and polymerized within the galleries of clay minerals, FeOCl, V2O5 gel and other layered hosts to yield multilayered inorganic/organic polymer nanocomposites... 

The spirit is to show some of the results, but also to guide users of the approach by pointing to the problems and limitations of the method. The review covers some of the newer applications in the spectroscopy of organic molecules acetone, methylenecyclopropene, biphenyl, bithiophene, the protein chromophores indole and imidazole, and a series of radical cations of conjugated polyenes and polyaromatic hydrocarbons. The applications in transition metal chemistry include carbonyl, nitrosyl, and cyanide complexes, some dihalogens, and the chromium dimer. 

S. Rizzo, F. Sannicolo, T. Benincori, G. Schiavon, S. Zecchin and G. Zotti, Calix[4]arene-functionalized poly-cyclopenta[2,l-fc 3,4-fc ]bithiophenes with good recognition abihty and selectivity for small organic molecules for application in QCM-based sensors, J. Mater. Chem., 14, 1804-1811 (2000). 

Side-chain substitution Small molecule organic semiconductors can also be rendered solution processable by attachment of flexible side chains. The substitution pattern needs to be designed carefully so that the side chains, which are needed to impart adequate solubility and film forming properties, do nof inferfere with the ability of the molecule to Jt-stack. Katz reported side-chain-substituted small molecule semiconductors such as dihexylanthradithiophene [47,48] that can be solution-deposited with mobilities of 0.01-0.02 cmWs. In bis(hexyl-bithiophene)benzene solution-cast onto a heated Si02 substrate, mobilities of up to 0.03 cmWs were reported [49]. Due to the relatively low solubility of these molecules, growth... 

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