4 results about "Naphthalene diimide" patented technology

The present invention is entitled: Naphthalene diimide derivatives incorporating piperidine as cathode interface materials for organic solar cells. This invention relates to the field of materials science, specifically to a compound and its applications, preparation methods, organic solar cell cathode interface materials, and organic solar cells. The structure of the compound is as follows: [structure omitted for brevity]. Wherein, n is a natural number between 0 and 6, and X1 and X2 are independently selected from [selections omitted for brevity]. This compound can be used as a cathode interface material for organic solar cells, achieving high photoelectric conversion efficiency. By incorporating piperidine, the photostability of the material is improved, exhibiting stronger photostability compared to commonly used tertiary amine side chain naphthalene diimide derivatives. This compound can also be applied to devices such as organic light-emitting diodes and perovskite solar cells.

Provided herein are naphthalene diimide (NDI) compounds and their use in thin films, methods of making thin films, photovoltaic devices comprising NDI thin films, and methods of making photovoltaic devices comprising NDI thin films. Additionally contemplated are organic light-emitting diodes comprising NDI thin films, photodetectors comprising NDI thin films, and organic field-effect transistors (OFETs) comprising NDI thin films.

This invention relates to a bis(naphthalimide)-based blue dye, its preparation method, and an electrowetting display ink. The dye has the following structural formula: it comprises two naphthalimide units, each containing one aromatic amine group and two straight-chain or branched alkyl groups, bridged by a diamine. The preparation method uses dibromonaphthalimide as an intermediate, which undergoes nucleophilic substitution reactions with the diamine and aromatic amine, respectively, to obtain the dye. The preparation method of the bis(naphthalimide)-based blue dye provided by this invention is simple in procedure, has mild reaction conditions, and is suitable for large-scale preparation.

There is provided a redox flow battery (1) comprising: a negative compartment (4) comprising a negative electrode (6) in contact with a first aqueous-based electrolyte solution (2) including a negative electrolyte (2a) comprising an organic redox-active compound dissolved in a first aqueous-based solvent; a positive compartment (5) comprising a positive electrode (7) in contact with a second aqueous-based electrolyte solution (3) including a positive electrolyte (3a) in a second aqueous-based solvent; electrical conductive means (8) for establishing electrical conduction between said positive electrode and said negative electrode, and an external load (9) for directing electrical energy into or out of the redox flow battery; a separator component (10) separating the first aqueous-based electrolyte solution in the negative compartment from the second aqueous-based electrolyte solution in the positive compartment; wherein the organic redox-active compound is a naphthalene diimide, NDI, according to formula (I).