Copolymers containing fluorene, anthracene and diazosulfide units, preparation method thereof, and application thereof
A technology of benzothiadiazole and copolymer, applied in the field of organic compound synthesis, can solve problems such as low photoelectric conversion efficiency, and achieve the effects of excellent reduction reversibility, high yield and improved transfer efficiency
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[0035] And, this embodiment also provides the preparation method of the copolymer containing fluorene, anthracene and benzothiadiazole units, including the following steps:
[0036] 1) Provide compounds A, B, and C represented by the following structural formula respectively,
[0037]
[0038] Among them, m is a natural number, and 1≤m≤20; R 1 , R 2 selected from hydrogen atom, halogen, cyano, optionally substituted or unsubstituted C 1 ~C 40 Alkyl, optionally substituted or unsubstituted aryl or optionally substituted or unsubstituted heteroaryl; R 3 selected from hydrogen atom, cyano, optionally substituted or unsubstituted C 1 ~C 40 Alkyl, optionally substituted or unsubstituted C 1 ~C 40 Alkoxy, optionally substituted or unsubstituted C 6 ~C 40 Aryl, optionally substituted or unsubstituted C 6 ~C 40 Aralkyl, optionally substituted or unsubstituted C 6 ~C 40 Arylalkoxy;
[0039] 2) In an anhydrous, anaerobic environment and an organic solvent system, compou...
Embodiment 1
[0055] Copolymers containing fluorene, anthracene and benzothiadiazole units I 1 The preparation, its structural formula is as follows:
[0056]
[0057] In the formula, x=0.1; y=0.9.
[0058] Its preparation comprises the following steps:
[0059] 1) 2, the preparation of 2,7-two (4,4,5,5-tetramethyl-1,3,2-dioxaborolyl) base-9,9-dioctylfluorene, its reaction is as follows Shown:
[0060]
[0061] The specific process of preparation is: set up an anhydrous and anaerobic reaction device, and continuously stir and N 2 Under the protection of the three-necked flask, add 9.0mmol of white 2,7-dibromo-9,9-dioctylfluorene, and then inject 150ml of refined tetrahydrofuran solvent with a syringe. Inject 27.0 mmol of n-BuLi. After stirring for 2 hours, inject 30.6 mmol of 2-isopropoxy-4,4,5,5-tetramethyl-1,3 with a syringe at -70°C. 2-dioxaborolane, then the temperature of the reaction system was raised to room temperature, and the reaction was continued for 12 hours; after t...
Embodiment 2
[0066] Copolymers containing fluorene, anthracene and benzothiadiazole units I 2 The preparation, its structural formula is as follows:
[0067]
[0068] In the formula, x=0.8; y=0.2.
[0069] Its preparation comprises the following steps:
[0070] 1) Preparation of 2,7-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolyl)-9,9-dioctylfluorene:
[0071] For its specific preparation process, see step (1) in Example 1;
[0072] 2) Polymer I 2 The preparation, its reaction is shown in the following formula:
[0073]
[0074] The specific process of preparation is: add 2,7-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolyl)-9,9-dioctyl to the reactor Fluorene 1mmol, 9,10-dibromo-2,6-di(2-octyldecyl)anthracene 0.8mmol, 4,7-dibromo-2,1,3-benzothiadiazole 0.2mmol, Pd( PPh 3 ) 2 Cl 2 0.02mmol, 2mol / L NaHCO 3 10ml of aqueous solution and 40ml of ether solvent, through repeated N 2 And vacuumize the reaction system to be in an oxygen-free state. After reacting at 80°C for 48 hours, add d...
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