A composite conductive polymer, a preparation method thereof and application thereof are disclosed, wherein a mixed solution A is used in the preparation process of the composite conductive polymer, which comprises the following two components: (i) a strong oxidant selected from at least one of permanganate, persulfate, dichromate and perchlorate; (ii) an oxidizing agent containing a metal ion capable of being reduced to elementary substance. The preparation process is simple and easy to operate, with low cost and favorable environmental protection and the obtained composite conductive polymer containing metal in elementary form, has good film-forming property and the film thereof can completely cover the surface of the insulating substrate, with excellent electrical conductivity, which therefore can be widely used in electroplating materials and semiconductor materials and other fields.

A polymer compound has a repeating unit represented by general formula (1): ##STR00001##
wherein R.sup.1a represents an alkyl group, an aryl group, a monovalent aromatic heterocyclic group or an aralkyl group, each possibly substituted and the same or different; and X.sup.1a represents a group selected from formulae (1a) to (1c).] ##STR00002##
wherein R.sup.1c represents an aryl group or a monovalent aromatic heterocyclic group, possibly substituted; and R.sup.1d to R.sup.1f represent each independently an alkyl group, an aryl group, a monovalent aromatic heterocyclic group, an alkoxy group, an aryloxy group, an aralkyl group, an arylalkoxy group, a substituted amino group, a substituted carbonyl group, a substituted carboxyl group, a fluorine atom or a cyano group; and the pairs R.sup.1d and R.sup.1e, R.sup.1f and R.sup.1g, R.sup.1d and R.sup.1f, and R.sup.1e and R.sup.1g may be mutually linked to form a ring together with a carbon atom to which they are linked.

A ladder tetrazine polymer is disclosed.

The invention discloses a humidity sensor based on squaraine polymer and the preparation method and use thereof. Specifically, the humidity sensor disclosed by the invention comprises a coating material and an interdigital electrode, wherein the coating material is a squaraine polymer as shown in formula I, n is an integer of 40-50, the coating material is brushed on the interdigital electrode, and the thickness is 100-400 microns. The humidity sensor disclosed by the invention has the advantages that the preparation is convenient, and the operation is simple; the response time is short, and the response for humidity change is higher than that of common metallic oxides; the recovery time is short, and the device performance is stable; the humidity hysteresis of the device is high under high humidity environment.

A polymer includes a first repeating unit and a second repeating unit forming a main chain, the first repeating unit including at least one first conjugated system, and the second repeating unit including at least one second conjugated system and a multiple hydrogen bonding moiety represented by Chemical Formula 1.

A solid electrolytic capacitor is obtained by a method comprising dissolving a polymerizable material for being converted into a conductive polymer in a water-soluble organic solvent to obtain a solution, adding the solution to water while homogenizing the solution to obtain a sol, immersing an anode body having a dielectric layer in the surface of the anode body in the sol, and applying voltage using the anode body as a positive electrode and a counter electrode as a negative electrode placed in the sol to electropolymerize the polymerizable material. An electropolymerizable liquid for producing a conductive polymer, the liquid composed of a sol comprising water, a water-soluble organic solvent, and a polymerizable material for being converted into the conductive polymer.

An organic photovoltaic device includes an anode and a cathode. The organic photovoltaic device includes an active layer between the anode and the cathode. The active layer includes a p-type material. The p-type material includes a donor-acceptor (DA) polymer. An acceptor unit of the DA polymer includes a functionalized pyranopyran-dione compound or a functionalized naphthyridine-dione compound.

Cathodes for a fast charging lithium ion battery, processes for manufacturing thereof and corresponding batteries are provided. Cathode formulations comprise cathode material having an olivine-based structure, binder material, and monomer material selected to polymerize into a conductive polymer upon partial delithiation of the cathode material during at least a first charging cycle of a cell having a cathode made of the cathode formulation. When the cathode is used in a battery, polymerization is induced in-situ (in-cell) during first charging cycle(s) of the battery to provide a polymer matrix which is evenly dispersed throughout the cathode.

A method for preparing a magnetic chain structure is provided. The method comprises providing a plurality of magnetic particles; dispersing the plurality of magnetic particles in a solution comprising a dopamine-based material to form a reaction mixture; applying a magnetic field across the reaction mixture to align the magnetic particles in the reaction mixture; and polymerizing the dopamine-based material on the aligned magnetic particles to obtain the magnetic chain structure. A magnetic chain structure prepared by the method is also provided.

A composition comprising a phosphorescent compound of formula (I) and a polymer comprising a repeat unit of formula (II) Ar.sup.1 is an aryl or heteroaryl group. R.sup.2 is a substituent. A is independently in each occurrence N or CR.sup.3 wherein R.sup.3 is H or a substituent. M is a transition metal or metal ion. x is a positive integer of at least 1. y is 0 or a positive integer. L.sup.1 is a mono- or polydentate ligand. R.sup.1 is a substituent. z is 0 or a positive integer. X is O or S. The phosphorescent compound of formula (I) may be mixed with the polymer or may be covalently bound thereto. The composition may be used in the light-emitting layer of an organic light-emitting device.