Imperial College London

ProfessorMartinHeeney

Faculty of Natural SciencesDepartment of Chemistry

Professor of Organic Materials
 
 
 
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Contact

 

+44 (0)20 7594 1248m.heeney Website

 
 
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Location

 

133ChemistrySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@misc{Hoffart:2008,
author = {Hoffart, T and Falk, B and McCulloch, I and Zhang, W and Heeney, M},
title = {WO2008092490. Process for preparing regioregular polythiophenes and polyselenophenes.},
type = {PATENT},
year = {2008}
}

RIS format (EndNote, RefMan)

TY  - PAT
AB - The invention relates to a process for prepg. regioregular polymers, in particular head-to-tail (HT) poly(3-substituted) thiophenes and selenophenes, with high regioregularity and defined mol. wt., to the polymers prepd. by this process, and to the use of the polymers as semiconductors or charge transport materials in optical, electrooptical and electronic devices, including field effect transistors, electroluminescent, photovoltaic and sensor devices. Thus, 2,5-dibromo-3-hexylthiophene (3.5 kg) was dissolved in THF (18 kg) under N2, followed by adding a soln. of n-butylmagnesium chloride in THF (2M, 5.1 kg), and heating the mixt. to 25°. In parallel, 2,5-dibromo-3-hexylthiophene (87 g) was dissolved in THF (7.5 kg) in a sep. vessel under N2, followed by adding 1,3-bis(diphenylphosphino)propane (112 g) and Ni(COD)2 (73 g), stirring the mixt. at 60° for 10 min, and cooling to 25°. The catalyst mixt. was added to the Grignard mixt., and the system was heated to reflux for 5 min, followed by adding a soln. of n-butylmagnesium chloride in THF (2M, 0.7 kg), refluxing for 10 min, adding a 25%-aq. HCl soln. (8.5 kg) and methanol (40 kg) to obtain a polymer (73.4% yield) having a no.-av. mol. wt. of 19,770, a wt.-av. mol. wt. of 34,070, and a content of head-to-tail couplings of 94.7%. [on SciFinder(R)]
AU - Hoffart,T
AU - Falk,B
AU - McCulloch,I
AU - Zhang,W
AU - Heeney,M
PY - 2008///
TI - WO2008092490. Process for preparing regioregular polythiophenes and polyselenophenes.
ER -