Abstract: This invention relates to a method for preparing an organic film at the surface of a solid support, with a step of contacting said surface with a liquid solution including (i) at least one protic solvent, (ii) at least one adhesion primer, under non-electrochemical conditions, and allowing the formation of radical entities based on the adhesion primer. The liquid solution can also include (iii) at least one monomer different from the adhesion primer and radically polymerisable. This invention also relates to a non-electrically-conductive solid support on which an organic film according to said method is grafted, and a kit for preparing an essentially polymeric organic film at the surface of a solid support.

Abstract: The present invention relates to the use of precursors of following formula (I): independently of E or Z configuration, in which: R2 is an electron-withdrawing group, R1, R3, R4 and R5, which are identical or different, represent a hydrogen atom, an alkyl radical or an aryl radical, in the formation, by electrochemical grafting, of a homogeneous organic film, preferably with a thickness of less than or equal to 10 nm, on an electrically conducting or semiconducting surface; and to the corresponding process for the formation of an ultrathin homogeneous organic film on an electrically conducting or semiconducting surface.

Abstract: The invention concerns a photoactive nanocomposite (3) comprising at least one donor-acceptor couple of semiconductor elements. One of the elements is made of doped nanowires (7) with sp3 structure, and the other of the elements is an organic compound (8). The elements are supported by a device substrate (1). The invention also concerns a production method. According to a first embodiment, after their growth, the nanowires (7) are retrieved, functionalised and solubilised in the organic component (8). The mixture is deposited by coating on a device substrate. According to a second embodiment, the nanowires (7) are formed on a growth substrate (5) which is also the device substrate. The organic component (8) is combined with the nanowires (7) so as to form an active layer (3). Such a photoactive nanocomposite (3) allows production of a photovoltaic cell.

Abstract: The present invention concerns the area of surface coatings, the said coatings being in the form of organic films. It most especially relates to a method for forming copolymer organic films by electrochemical grafting on electrically conductive or semi-conductive surfaces using electrolytic aqueous solutions containing at least one protic solvent, at least one radically polymerizable monomer and at least one surfactant. The invention also concerns that surfaces obtained with the use of this method, their applications especially for preparation of microelectronic components, biomedical devices or screening kits, as well as the electrolyte solution used in the course of the method.

Abstract: The present invention relates to a method for cladding a simple or complex surface, electrically conducting or semiconducting, by means of an organic film from at least one precursor of said organic film, characterized in that the cladding of the surface by the organic film is carried out by electro-initiated grafting of said, at least one, precursor of said surface by applying at least one potential sweep on this surface carried out in such a way that at any point of said surface the maximum potential of each potential sweep, in absolute value and relative to a reference electrode, is greater than or equal to the value of the potential (vbloc) from which the curves of a graph expressing the quantity of electro-grafted precursor on a surface identical to said surface in function of the number of potential sweeps are all superposed and independent of this vbloc potential.

Abstract: The present invention relates to a method for cladding a simple or complex surface, electrically conducting or semiconducting, by means of an organic film from at least one precursor of said organic film, characterised in that the cladding of the surface by the organic film is carried out by electro-initiated grafting of said, at least one, precursor of said surface by applying at least one potential sweep on this surface carried out in such a way that at any point of said surface the maximum potential of each potential sweep, in absolute value and relative to a reference electrode, is greater than or equal to the value of the potential (vbloc) from which the curves of a graph expressing the quantity of electro-grafted precursor on a surface identical to said surface in function of the number of potential sweeps are all superposed and independent of this vbloc potential.

Abstract: The invention concerns a solid support comprising a functionalized electricity conductor or semiconductor surface coated with a functionalized electrografted organic layer wherein at least 90% of the number of functional groups of interest is accessible. The invention also concerns the method for preparing such a support and uses thereof, in particular as adhesive primer for fixing molecules of interest or objects bearing a complementary function (molecular adhesive).

Abstract: The invention relates to a method of fixing macro-objects to an electricity conducting- or semi-conducting surface by means of electrografting. The invention also relates to the electricity conducting- or semi-conducting-surfaces obtained using the aforementioned method and to the applications of same.

Abstract: The invention concerns a mask-free localised grafting of organic molecules capable of being electrically activated, on a composite surface comprising conductive and/or semiconductive portions, by contacting said organic molecules with said composite surface, whereby the grafting is carried out electrochemically in one single step on specific selected zones of said conductive and/or semiconductive portions, said zones being brought to a potential not less than an electric potential threshold determined relative to a reference electrode, said electric potential threshold being the potential beyond which the grafting of said organic molecules occurs.

Abstract: A process for mask-free localized grafting of organic molecules capable of being electrically activated, onto a composite surface comprising conductive and/or semiconductive portions, by placing said organic molecules in contact with said composite surface, in which said grafting is performed electrochemically in a single step on chosen, defined areas of said conductive and/or semiconductive portions, said areas being brought to a potential higher than or equal to a threshold electrical potential determined relative to a reference electrode, said threshold electrical potential being the potential above which grafting of said organic molecules takes place.

Abstract: A method of forming a network of islands (124) of semiconductor material on an electrically insulating material (112), comprising: p1 a) the deposition of nucleation kernels (122) on the surface of the electrically insulating material, b) the formation of islands of semiconductor material (124) respectively on the nucleation kernels. In accordance with the invention, the deposition of the nucleation kernels is effected using at least one so-called distribution layer (116) made of a material having a substantially regular molecular structure, formed on the surface of the electrically insulating material (112), in order to distribute the nucleation kernels in a substantially regular fashion on the surface of the electrically insulating material.

Abstract: The invention relates to bidimensional organic membranes or diaphragms and to their preparation processes.These diaphragms have at least one monomolecular layer of organic molecules A, such as porphyrins, phthalocyanines and porphyrazines. In a layer, each molecule A is directly or indirectly bonded to n (n.gtoreq.3) identical molecules A by n bonds arranged symmetrically with respect to the center of the molecule A.Therefore there diaphragms have microscopic physical properties identical in at least two directions of the plane of the diaphragm. They can be used as conductive diaphragms.