Abstract: A polymer is obtained by polymerization of a polymerizable fluorescent monomer compound of 7-hydroxycoumarin having the following formula (I): G is a substituent including a polymerizable chemical group R, and optionally of at least one other polymerizable monomer. The polymer can be used as a sensitive material in an optical sensor.

Abstract: Polymers and copolymers of polymerizable fluorescent compounds of 7-hydroxycoumarin such as Ethyl-2-methacrylate Umbelliferone-4-acetate are provided. In addition, a sensor comprising this polymer notably for detecting and/or assaying nitrated and organophosphorus compounds, explosives, and toxic compounds is provided.

Abstract: Polymers and copolymers of polymerizable fluorescent compounds of 7-hydroxycoumarin such as Ethyl-2-methacrylate Umbelliferone-4-acetate are provided. In addition, a sensor comprising this polymer notably for detecting and/or assaying nitrated and organophosphorus compounds, explosives, and toxic compounds is provided.

Abstract: Biomimetic artificial prostheses which are made from polyester, such as polyethylene terephthalate, and a method for the biomimetic functionalization of such prostheses. The method includes a step involving the grafting of biologically-active polymers or copolymers to the polyester surface of the prostheses, the grafting step consisting of the peroxidation of the surface by ozonation followed by a step including the radical polymerization of a solution of at least one monomer. The method also includes an optional step consisting in impregnating the prostheses with type I and/or II collagen and/or fibronectins. The prostheses thus obtained enable a normal and uniform regrowth of the fibroblasts, thereby significantly improving the biological integration of such polyester prostheses.

Abstract: Biomimetic artificial prostheses which are made from polyester, such as polyethylene terephthalate, and a method for the biomimetic functionalization of such prostheses. The method includes a step involving the grafting of biologically-active polymers or copolymers to the polyester surface of the prostheses, the grafting step consisting of the peroxidation of the surface by ozonation followed by a step including the radical polymerization of a solution of at least one monomer. The method also includes an optional step consisting in impregnating the prostheses with type I and/or II collagen and/or fibronectins. The prostheses thus obtained enable a normal and uniform regrowth of the fibroblasts, thereby significantly improving the biological integration of such polyester prostheses.

Abstract: The present invention relates to a process for the preparation of sublimable oligomers based on phenylene, linear and of controlled length, by electrochemical coupling of two lower oligomers within a monocompartmental cell with three electrodes, in the presence of an organometallic catalyst, characterized in that it comprises:1--electrolysis of the catalyst and its reaction with one of the two oligomers at a first potential,2--reduction of the insertion species obtained according to step 1, and its reaction with a second oligomer at a second potential below the first potential, and3--recovery of the sublimable oligomer so obtained, the two lower oligomers used being mono- or dihalogenated oligomers identical or different.The present invention also relates to sublimable oligomers based on phenylene obtained by this process, and their uses in electronics and/or optics.

Abstract: A difunctional monomer containing a strained olefin ring and an unstrained olefin, ether group or other group polymerizable with Lewis acid or Ziegler-Natta coordination catalyst by forming a complex of the monomer and Cp.sub.2 TiCH.sub.2 (Cp is .eta..sup.5 --C.sub.5 H.sub.5) and heating the complex in presence of excess monomer to above the decomposition point. A controlled, selective opening of the ring with the strained olefin occurs to form a linear, soluble polymer having the non-polymerized group pendant from the chain. An improved catalyst is formed by preparing the catalyst with a base such as 4-dimethylaminopyridine that forms an insoluble adduct with AlR.sub.2 Cl which is precipitated and removed. Aluminum can also be eliminated by using a precursor of the formula: ##STR1## When compound (5) is reacted with monomer, the catalyst-monomer complex forms by elimination of a volatile component (isobutylene when R.sup.1 is Me and R is H) which is removed by venting.

Abstract: A difunctional monomer containing a strained olefin ring and an unstrained olefin, ether group or other group polymerizable with Lewis acid or Ziegler-Natta coordination catalyst by forming a complex of the monomer and Cp.sub.2 TiCH.sub.2 (Cp is .eta..sup.5 --C.sub.5 H.sub.5) and heating the complex in presence of excess monomer to above the decomposition point. A controlled, selective opening of the ring with the strained olefin occurs to form a linear, soluble polymer having the non-polymerized group pendant from the chain. An improved catalyst is formed by preparing the catalyst with a base such as 4-dimethylaminopyridine that forms an insoluble adduct with AlR.sub.2 Cl which is precipitated and removed. Aluminum can also be eliminated by using a precursor of the formula: ##STR1## When compound (5) is reacted with monomer, the catalyst-monomer complex forms by elimination of a volatile component (isobutylene when R.sup.1 is Me and R is H) which is removed by venting.