The British Petroleum Company, P.l.c.

Qinetiq Limited

University of Durham

Ciba-geigy Corporation

The Secretary of State for Defence in Her Britannic Majesty's Government

Cambridge Display Technology Limited

William James Feast

Ian Charles Sage

Emma Louise Wood

Richard John Peace

David C Bott

John H Edwards

Jeremy N Winter

Richard Henry Friend

Donald Richard Randell

Guy Peter Bryan-Brown

Ezat Khosravi

Franco Cacialli

Lian Hutchings

Kathryn E Foster

Stephen J Till

Richard Lewis Thompson

Thanawadee Leejarkpai

Rusli Daik

Amilcar Pillay-Narrainen

Alan F Gerrard

David B Harrison

Lian Richard Hutchings

A polymer comprising a bulk polymer or copolymer Ptogether with an amount of a polymer-dendron additive D-Pof formula (I): is provided, such that the polymer comprises from 0.001 to 50% of dendron-additive D-Pcalculated as weight of dendron D in polymers D-Pand P, wherein:

Surface active polymeric systems

This invention relates to an organic semiconductor device comprising a substrate bearing an organic layer sandwiched between electrode structures wherein the organic layer comprises a polymer of general Formula (I): wherein X is selected from H, CN, F, Cl, Br, COOCH . Y is given by the following general Formula (II): wherein A is a phenyl group which may be further substituted in 1 or 2 or 3 positions with groups independently selected from C alkyl, CN, F, Cl; B and C are both phenyl groups which may be further substituted, independently of each other, in 1 or 2 or 3 or 4 or 5 positions with groups independently selected from C alkyl, CN, F, Cl; A, B and C may also be, independently of each other, selected from pyrimidine, pyridazine and pyridine; m&equals;5-20,000.

Conducting polymers

Process for polymerization of cycloolefins and polymerizable cycloolefins

This invention relates to statistical copolymers of general formula (I) and their use in organic semiconductor devices: wherein m and j are the average number of repeat units of A and B such that: m&equals;0.1-0.9, j&equals;1&minus;m, Q&equals;10-50000; A and B are independently selected from hole transporting groups and electron transporting groups and are statistically distributed along the polymer chain; X and Z are selected from H, CN, F, Cl, Br, CO CH .

Organic semiconductors based on statistical copolymers

Provided is a method for synthesizing a poly(arylene vinylene), which method comprises selecting a vinyl monomer by controlling the ratio of cis isomer to trans isomer in the monomer, and forming the poly(arylene vinylene) from the resulting vinyl monomer, such that the desired cis vinylene to trans vinylene ratio is obtained in the poly(arylene vinylene) product.

Conjugated polymers

Polymers for liquid crystal alignment

Polymers having repeating units of the general formula I ##STR1## where Y and Z are the same or different and each denote --H, --COOR.sup.1 or --CON(R.sup.2)R.sup.3, with the proviso that Y and Z do not both denote --H, or Y and Z together with the carbon atoms to which they are attached denote a divalent cyclic group of formula ##STR2## A denotes --O-- or --N(R.sup.4)--, R.sup.1 denotes --H, C.sub.1 -C.sub.4 alkyl or C.sub.2 -C.sub.4 hydroxyalkyl, R.sup.2 and R.sup.3 each denote --H, C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 hydroxyalkyl, and R.sup.4 denotes --H, --OH, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 hydroxyalkyl or C.sub.1 -C.sub.4 alkoxy. The carboxyl-containing polymers are useful in water treatment.

Unsaturated polymers of heterocyclic olefins

Novel polymers and copolymers containing the monomer 3,6-bis(trifluoromethyl)pentacyclo [6.2.0.0.sup.2,4.0.sup.3,6.0.sup.5,7 ] dec-9-ene are prepared which can be easily converted into poly(acetylene). The polymer (copolymer) and subsequent poly(acetylene) can be made into any desired shape, such as into films.

Novel polymers and copolymers and production of poly(acetylene)

Novel polymers and copolymers containing the monomer 3,6-bis(trifluoromethyl)pentacyclo [6.2.0.0.sup.2,4.0.sup.3,6.0.sup.5,7 ]dec-9-ene are prepared which can be easily converted into poly(acetylene). The polymer (copolymer) and subsequent poly(acetylene) can be made into any desired shape, such as into films.

The present invention relates to coherent poly(acetylene) films and to a method of producing such polyacetylenes. The process comprises solvent casting a solution of a polymer of the general formula (V) derived from a precursor (IV), and transforming the pre-cast, polymer (V) into a poly(acetylene) (III) film and a by-product (VI) at a temperature between 20.degree. and 200.degree. C. at reduced pressure. The poly(acetylene) thus formed has a substantially higher density than the poly(acetylene) polymers produced hitherto. The morphology of the poly(acetylene) produced is that of a thin, coherent solid film with no voids and, no basic structural units are visible even at a magnification of 10,000 times. The polymers also have a lower crystallinity than those produced by conventional methods.

Polyacetylene production

Growing community of inventors

Durham, United Kingdom

William James Feast