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.

Disclosed are conjugated polymers having desirable properties as semiconducting materials. Such polymers are cheap and easy to synthesize, and can exhibit good solubility and great solution processibility, and that enable highly efficient OPVs.

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.

Disclosed is a fluorine-substituted Pi(π)bridge selenide polymer acceptor material, its preparation and application. The selenide polymer acceptor material is named PYSe2FT and is synthesized by Knoevenagel condensation reaction and Still cross-coupling reaction; the material PYSe2FT takes a selenium-substituted core donor unit as a main structure, and combines a difluoro-substituted thiophene π-electronic connection unit, where the selenium-substituted core donor unit and the difluoro-substituted thiophene π-electronic connection unit can effectively regulate and control the molecular energy level, so that molecules generate good accumulation, thus making PYSe-2FT an excellent polymer acceptor material.

The present invention provides organic compounds having pseudocapacitive performance and methods of preparing said compounds. The organic compounds can include perylene diamine (PDI) subunits and hexaazatrinaphthylene (HATN) subunits.

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.

An organic compound, a donor-acceptor conjugated polymer, a formulation and a thin film, wherein a solution of the donor-acceptor conjugated polymer exhibits a peak optical absorption spectrum red shift of at least 100 nm when the donor-acceptor conjugated polymer solution is cooled from 140° C. to room temperature.

Metallopolymers of formula (I) where R.sup.1 and R.sup.1′; and R.sup.2 and R.sup.2′ are independently of each other, a C.sub.2-C.sub.10 alkyl group; X is CR3R3′ or NR4; R.sup.3 and R.sup.3′ are, independently of each other, as is R.sup.4, a C.sub.2-C.sub.10 alkyl group; L is a C.sub.4-C.sub.10 alkylene group; Ln.sup.1 and Ln.sup.2 are, independently of each other, chosen from the lanthanide cations; L.sup.1 and L.sup.2 are, independently of each other, chosen from the α-diketonate ligands; T is a neutral bidentate Lewis base including two coordinating nitrogen atoms; .fwdarw. represents a coordination of group T via the two nitrogen atoms of T to Ln.sup.1 and Ln.sup.2 respectively; Ln.sup.1 and Ln.sup.2 are, independently of each other, chosen from the lanthanide cations; L.sup.1 and L.sup.2 are, independently of each other, chosen from the β-diketonate, picolinate or dipicolinate monoanionic ligands; 0.01<x<0.50; 0<y<0.49, with x+y=0.50.

A mechanical ball-milling method for preparing a polydopamine-modified montmorillonite nanomaterial is disclosed. The method includes dispersing a montmorillonite material in an aqueous solution, stirring, concentrating and collecting a concentrated montmorillonite solution for use; adding dopamine hydrochloride to a buffer solution to prepare a dopamine hydrochloride solution, with a concentration of 0.2-1 g/mL, and adjusting the pH value of the dopamine hydrochloride solution; and adding the dopamine hydrochloride solution and the concentrated montmorillonite solution simultaneously into a ball mill jar to form a mixture, and then subjecting the mixture to a ball milling for 0.3-6 hours, pouring the mixture out of the ball mill jar, and subjecting to a solid-liquid separation by a centrifugation, and then washing a solid product with deionized water for 3-6 times, and removing water from the solid product, to obtain the polydopamine-modified montmorillonite nanomaterial.

Oxacycloolefinic polymers as typically obtained by metathesis polymerization using Ru-catalysts, show good solubility and are well suitable as dielectric material in electronic devices such as capacitors and organic field effect transistors.