Block polymers and random polymers that can be used for directional self-assembly and their preparation methods and self-assembly methods
A technology of block polymers and block copolymers, which is applied in the field of block polymers and random polymers and their preparation, and can solve the problems of low DSA annealing efficiency
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0076] Under anhydrous and oxygen-free conditions, 250 mL of tetrahydrofuran (THF) that had been dehydrated and deoxygenated was added to the reaction flask, and the temperature of the reaction flask was lowered to -78° C. after three freeze-thaw cycles. Under the protection of dry helium, after adding 0.01mL of 2.5M n-butyllithium cyclohexane solution, 1.97g of p-tert-butoxystyrene (tBOS) was added, and after one hour of reaction, 0.01mL of diphenylethylene ( DPE) was reacted for half an hour, after all active reaction ends were connected with DPE, 1.23 g of n-butyl methacrylate (nBMA) was added, and the reaction was continued for one hour. After the reaction was completed, 4 mL of methanol that had undergone three freeze-thaw cycles was added to the reaction bottle to terminate the reaction. Add the reaction product dropwise to the methanol solution, suction filter and wash the precipitate several times, such as three times, and then vacuum dry at room temperature to obtain ...
Embodiment 2
[0081] Under anhydrous and oxygen-free conditions, 250 mL of tetrahydrofuran (THF) that had been dehydrated and deoxygenated was added to the reaction flask, and the temperature of the reaction flask was lowered to -78° C. after three freeze-thaw cycles. Under the protection of dry helium, add 0.02mL of 2.5M n-butyllithium cyclohexane solution, add 4.80g of tert-butylstyrene (tBS), react for one hour, add 0.06mL of diphenylethylene (DPE) After half an hour of reaction, 3.84 g of n-propyl methacrylate (nPMA) was added after all active reaction ends were connected with DPE, and the reaction was continued for one hour. After the reaction was completed, 4 mL of methanol that had undergone three freeze-thaw cycles was added to the reaction bottle to terminate the reaction. Add the reaction product dropwise to the methanol solution, suction filter and wash the precipitate several times, such as three times, and vacuum dry at room temperature to obtain the block polymer BCP with a mo...
Embodiment 3
[0086] Under anhydrous and oxygen-free conditions, 250 mL of tetrahydrofuran (THF) that had been dehydrated and deoxygenated was added to the reaction flask, and the temperature of the reaction flask was lowered to -78° C. after three freeze-thaw cycles. Under the protection of dry helium, after adding 0.017mL of 2.5M n-butyllithium cyclohexane solution, 1.38g of trifluoromethylstyrene (TFMS) was added, and after one hour of reaction, 0.06mL of diphenylethylene (DPE ) to react for half an hour, after all active reaction ends were connected with DPE, 2.02 g of trifluoroethyl methacrylate (TFEMA) was added, and the reaction was continued for one hour. After the reaction was completed, 4 mL of methanol that had undergone three freeze-thaw cycles was added to the reaction bottle to terminate the reaction. Add the reaction product dropwise to the methanol solution, suction filter and wash the precipitate several times, such as three times, and vacuum dry at room temperature to obta...
PUM
| Property | Measurement | Unit |
|---|---|---|
| size | aaaaa | aaaaa |
| size | aaaaa | aaaaa |
| molecular weight distribution | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More