Cambridge Display Technology Limited

Franco Cacialli

Andrew Bruce Holmes

Richard Henry Friend

Rainer Eugen Martin

Paul Leslie Burn

Adam R Brown

Donal D Bradley

William James Feast

Stephen Carl Moratti

Arno Kraft

Neil Clement Greenham

Ian Rees

Josef Herbert Martens

Steven Carl Moratti

Florence D Geneste

Johannes Gruener

Cedric Fischmeister

Yuguang Ma

Rusli Daik

Beng Sim Chuah

Provided is a conjugated poly(1,4-arylene vinylene) compound comprising an arylene unit having adjacent substituents, said substituents being oriented such as to affect the electronic structure of the compound sufficiently to cause a blue-shift in the photoluminescence and/or electroluminescence of the compound.

Polymeric materials for electroluminescent devices

A method for making a polymer or oligomer comprising the steps of making a first monomer comprising a substituted aromatic or heteroaromatic group by providing an aromatic or heteroaromatic group substituted with first and second director groups, performing metalisation at a first position on the aromatic or heteroaromatic group, performing electrophilic substitution so as to provide a first substituent group at the first position, and contacting in a reaction mixture the first monomer with at least two further monomers that independently are the same or different from the first monomer under conditions so as to form a polymer or oligomer, wherein the nature and positions of the first and second director groups regioselect the first position.

Polymerization method

The invention relates to optical devices comprising a substrate and at least one semiconductive polymer supported by said substrate, wherein said semiconductive polymer is a copolymer in which one of the repeat units is a group of formula (I) or a homopolymer in which the repeat unit is a group of formula (I):wherein: A and B are the same or different and each comprises wholly or partially an aryl moiety or a heteroaryl moiety, said moiety in A being fused to the bond a-b and said moiety in B being fused to the bond c-d, and X is a linking unit, X being such that there is a torsion angle of at least 5&#xb0; between the bond a-b and the bond c-d about the bond b-d. The invention also relates to semiconductive polymers, monomers for preparing same, and methods for preparing random statistical conjugated polymers.

Twisted polymers, uses thereof and processes for the preparation of 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

Electroluminescent device comprising a chromophoric polymeric composition

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Cambridge, United Kingdom

Franco Cacialli