Abstract: 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, COOCH3. 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 C1-8 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 C1-8 alkyl, CN, F, Cl; A, B and C may also be, independently of each other, selected from pyrimidine, pyridazine and pyridine; m=5-20,000.

Abstract: 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=0.1-0.9, j=1−m, Q=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, CO2CH3.

Abstract: A method of aligning liquid crystal material by bringing into contact with a thin layer of polymer which contains the anthracenyl group, the polymer having previously been treated with plane polarised ultraviolet light. A liquid crystal cell is described wherein each of the substrates defining two opposing cell walls are coated on their inner surface with a suitable polymer for carrying out the invention. A typical embodiment of the invention would have repeat unit (II).

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.