High Florey Huggins parameter block polymers and random polymers for directional self-assembly, and methods for their preparation and self-assembly
A technology of block polymer and polymer, which can be applied in the direction of photoengraving process, optomechanical equipment and instrument of pattern surface, which can solve the problems of expensive equipment and complicated process.
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Embodiment 1
[0075] 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 0.1mL of 2.5M n-butyllithium cyclohexane solution, 1.97g of p-tert-butoxystyrene (tBOS) was added, and after one hour of reaction, 0.1mL of diphenylethylene ( DPE) was reacted for half an hour, and after all active reaction ends were connected with DPE, 2.12 g of tert-butyldimethylsiloxane-protected hydroxyethyl methacrylate (HEMAtBDMS) was added Continue to react 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. The reaction product was added dropwise to the methanol solution, the precipitate was filtered and washed several times, such as three times, and the...
Embodiment 2
[0080] 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 0.6mL of 2.5M n-butyllithium cyclohexane solution, add 4.80g of tert-butylstyrene (tBS), react for one hour, add 1.8mL of diphenylethylene (DPE) React for half an hour, after all active reaction ends are connected with DPE, add 7.74g hydroxypropyl methacrylate (HPMAtBDMS) protected by tert-butyldimethylsiloxane Continue to react 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 pol...
Embodiment 3
[0085] 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 0.429mL of 2.5M n-butyllithium cyclohexane solution, 3.52g of tert-butoxystyrene (tBOS) was added, and after one hour of reaction, 0.3mL of diphenylethylene (DPE ) to react for half an hour, after all active reaction ends are connected with DPE, add 4.81g of diethylene glycol methacrylate (DEGMEAtBDMS) protected by tert-butyldimethylsiloxane Continue to react 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 r...
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