Conjugated polymer, preparation method and applications thereof

• Main Authors: ZHOU MINGJIE, GUAN RONG, LI MANYUAN
• Format: Patent
• Language: Chinese; English
• Published: 17.12.2014
• Subjects: ADHESIVES; BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOSITIONS BASED THEREON; DYES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HETEROCYCLIC COMPOUNDS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC CHEMISTRY; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; POLISHES; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; SEMICONDUCTOR DEVICES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR PREPARATION OR CHEMICAL WORKING-UP

The invention relates to a conjugated polymer represented by the formula (P), wherein the R1 represents an alkyl group with a carbon number of 1 to 16, the R2 represents an alkyl group with a carbon number of 1 to 16, the R3 and R4 are respectively represent an H atom or an alkyl group with a carbon number of 1 to 12, and n is a natural number in a range of 5 to 60. The invention also relates to a preparation method and applications of the conjugated polymer. Pyrroloindolodithiophene derivatives taken as the donor unit and a strong acceptor unit (diketopyrrolopyrrole) are bridged and copolymerized through selenophene, thus the energy gap of the conjugated copolymer is reduced through the interactive reactions (electron pushing and pulling effect) between the acceptor unit and the donor unit, and the light absorption range of the material is greatly enlarged. Through selecting the novel donor unit and acceptor unit, a D-pi-A type conjugated polymer containing a unit of pyrroloindolodithiophene-selenophene-dike