Abstract: The invention relates to an electrode, to the method for manufacturing same and to a device for storing and delivering electric power including same. The electrode of the invention includes a mounting, made of a conductor or semiconductor material, the mounting including, on at least one of the surfaces thereof, at least one nanostructure made of a semiconductor material, characterized by also including a protective layer made of a material selected among a dielectric material having an intrinsic capacity of 1.5 10?6 to 10 10?6 F/cm2 and a metal, the layer having a thickness that is less than the height of said nanostructure, and covering the at least one nanostructure. The invention is useful in the field of electrochemical storage and, in particular, in the field of ultracapacitors.

Abstract: The invention relates to a “push-pull” type compound, used for manufacturing polymer materials having both electrical conduction and photochromic properties, which responds to the general formula A-X-R in which: A is an electron acceptor group; X is a group having a ?-conjugated system and forms a photochromic group with A; and R is a polymerizable electron-donor group that is chosen among the carbazole group and the groups derived from the carbazole group by substitution, and which is linked to X by the nitrogen atom of the carbazole group. The invention also relates to an electroconducting and photochromic polymer material, obtained by polymerization of this compound. Applications: optoelectronics, signal processing, data storage, etc.