51results about How to "Good electron delocalization performance" patented technology

The invention provides a benzothiophene-silole-di(diazosulfide)-containing copolymer as well as preparation and application thereof. The benzothiophene-silole-di(diazosulfide)-containing copolymer is a copolymer P having a general formula as shown in the specification, wherein R1 and R2 respectively represent C1-C20 alkyl, R1 and R2 respectively represent H or C1-C20 alkyl, and n represents an integer of 1-100. The benzothiophene-silole-di(diazosulfide)-containing copolymer contains novel benzothiophene-(diazosulfide) conjugated units having high matching rates with a solar spectrum and is in a planar conjugated structure, so that the migration rate of a current carrier is high, and the energy conversion efficiency is increased; the preparation method is simple and controllable and has good application prospects in the fields of photoelectric materials including polymer solar cells, organic electroluminescence devices and the like.

The invention belongs to the field of an optoelectronic material, and discloses an organic semiconductor material containing a thiophene pyrrole dione unit and a preparation method and an application thereof. The organic semiconductor material is shown in Formula (I), wherein R1, R2 and R3 are C1-C20 alkyl, and n is an integer more than 1 and less than or equal to 100. Compared with the prior art, the solubility and molecular weight of the product can be improved due to introduction of alkyl to realize the spin-coating polymer or spin-coating copolymer; and the polymer formed with thiophene pyrrole diketone monomers and thienothiophene monomers can achieve a strong donor-acceptor structure, thereby helping to improve the stability of the material and reduce the energy band gap of the material, expanding the scope of sunlight absorption, and improving the optoelectronic conversion efficiency.

The invention belongs to the field of photoelectronic materials, and discloses an organic semiconductor material containing dithienothiophene and thienopyrryldiketone units, and a preparation method and application thereof. The organic semiconductor material has the following general formula (I), wherein R1, R2 and R3 are respectively a C1-C20 alkyl group, and n is a whole number which is greater than 1 and less than or equal to 100. Compared with the prior art, the alkyl group is introduced to enhance the solubility and molecular weight of the product, thereby implementing a spin coating polymer or spin coating oligomer. Since the polymer formed by the thienopyrryldiketone monomers and thienothiophene monomers can form a very strong donor-receptor structure, the stability of the material is enhanced, and the band gap of the material can be easily reduced, thereby widening the sunlight absorption range and enhancing the photoelectric conversion efficiency.

The invention provides a copolymer containing dithieno (3,2-b:2',3'-d) thiophene-silole (2,3-b:3',2'-d) (diazosulfide) as well as a preparation method and an application of the copolymer. The copolymer provided by the invention is a copolymer P which has the general formula shown in the specification, wherein in the formula, R1 and R2 represent alkyl groups of C1 to C20; R3 and R4 represent H or alkyl groups of C1 to C20; n represents an integer between 1 and 100. The copolymer contains a new silole (2,3-b:3',2'-d) (diazosulfide) conjugation unit which has a high matching degree with solar spectrum and is of a plane conjugation structure at the same time, so that the charge carrier migration rate is high. Thus, the energy conversion efficiency is improved. A preparation method of the copolymer is simple and controllable. As a result, the copolymer provided by the invention has good application prospects in the fields of polymer solar cells, organic electroluminescent devices and other photoelectric materials.

The invention provides a copolymer containing dibenzothiophene-silole-di(diazosulfide) as well as a preparation method and an application thereof. The copolymer containing dibenzothiophene-silole-di(diazosulfide) is a copolymer P with the general formula as shown in the specification, wherein R1 and R2 are C1-C20 alkyls, R3 is H or C1-C20 alkyls, and n is an integer between 1 and 100 in the formula. The copolymer containing the dibenzothiophene-silole-di(diazosulfide) disclosed by the invention contains a new silole-di(diazosulfide) conjugated unit, is high in matching degree with a solar spectrum, and simultaneously is in a planer conjugate structure, and high in vector migration rate, the energy conversion efficiency is improved, and the preparation method is simple and controllable, and has a good application prospect in the photoelectric material fields such as a polymer solar cell, an organic light-emitting device and the like.

The invention provides a copolymer containing benzothiophene-silole di(diazosulfide) and a preparation method and application thereof. The copolymer containing benzothiophene-silole di(diazosulfide) is a copolymer P with a general formula shown in the specification, wherein R1 and R2 are C1-20 alkyl, R3 and R4 are C1-20 alkyl or C1-20 alkoxyl, and n is an integer from 1 to 100. The copolymer containing benzothiophene-silole di(diazosulfide) provided by the invention comprises a new silole di(diazosulfide) conjugating unit, has high matching rate with a solar spectrum. Meanwhile, the copolymer is in a planar conjugated structure and the carrier migration rate is high, so that the energy conversion ratio is improved. The preparation method is simple and controllable. The copolymer has a very good application prospect in the photoelectric material fields such as polymer solar batteries and organic electroluminescent apparatuses.

Relating to the technical field of organic materials, the invention provides a fluorene-based copolymer containing thiophene and thiophene pyrroledione units, as shown in formula (I). Specifically, R1, R2 and R3 are alkyl groups selected from C1-C20; R4, R5, R6, R7, R8 and R9 are alkyl groups selected from H or C1-C20; x+y=1, and x and y are both unequal to zero; m is an integer from 1-5; n is aninteger from 1-100. The invention also provides a preparation method of the fluorene-based copolymer containing thiophene and thiophene pyrroledione units, as well as application of the copolymer. Inthe copolymer of the invention, the fluorene unit, the thiophene unit and the thiophene pyrroledione unit are combined together organically so as to form a strong donor-acceptor structure, thus benefiting for improving the stability of the copolymer material, reducing the band gap of the material, enlarging the absorption scope of sunlight, and improving the photoelectric conversion efficiency.

The invention provides a copolymer containing 3,6-carbazole-benzobis(benzothiadiazole), a preparation method and applications thereof. The copolymer containing 3,6-carbazole-benzobis(benzothiadiazole) is represented by a formula which is represented in the description; wherein in the formula, the R1, R2 and R3 individually represent a C1-C20 alkyl group, and n is an integer in a range of 1 to 100. The energy gap of the copolymer containing 3,6-carbazole-benzobis(benzothiadiazole) is narrow.