Process of preparing regioregular polymers
AssigneeMerck Patent GmbH
InventorsMartin Heeney, Iain McCulloch, Mark Giles, Guntram Koller, Weimin Zhang
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Abstract
The invention relates to a process of preparing regioregular polymers, in particular head-to-tail (HT) poly-(3-substituted) thiophenes with high regioregularity, to novel polymers prepared by this process, and to the use of the novel polymers as semiconductors or charge transport materials in optical, electrooptical or electronic devices including field effect transistors (FETs), electroluminescent, photovoltaic and sensor devices, to FETs and other semiconducting components or materials comprising the novel polymers.
Claims36
Process of preparing a polymer from an optionally substituted thiophene having at least two groups that are capable of reacting with magnesium, by reacting said thiophene with magnesium in the presence of a catalytic amount of an organohalide or organomagnesium halide to form a regiochemical Grignard intermediate or a mixture of regiochemical Grignard intermediates, and polymerising said Grignard intermediate(s) in the presence of a suitable catalyst.
Process of preparing a regioregular poly(3-substituted thiophene) with a regioregularity of ≧95% head-to-tail (HT) couplings by reacting a 3-substituted thiophene, having chloro and/or bromo groups in 2- and 5-position, with magnesium in the presence of a catalytic amount of an organohalide or organomagnesium halide in a solvent, or a mixture of solvents, to form a regiochemical Grignard intermediate, or a mixture of regiochemical Grignard intermediates, and polymerising said Grignard intermediate in the presence of a suitable catalyst.
Dependencies are inferred from the claim text.