Synthesis of New TetrathiafulvaleneModules for Acetylenic Scaffolding
作者:Mogens Brøndsted Nielsen
DOI:10.1055/s-2003-40841
日期:——
Benzene-extended derivatives of tetrathiafulvalene (TTF) containing silyl-protected acetylene groups at the exo-cyclic fulvene carbons were prepared by a double Wittig olefination of a diacetylenic derivative of terephthalaldehyde. Acetylenic coupling reactions at the lateral acetylene appendages with phenylacetylene and 4-iodonitrobenzene afforded large Ï-conjugated chromophores.
A selection of donorâacceptor chromophores containing the redox-active dithiafulvene unit about acetylenic and aryl scaffolds has been synthesised. The molecules were studied for their optical, redox and structural properties. Moreover, third-order non-linear optical properties were investigated as a function of molecular structure.