A block copolymer intrinsically stretchable electroluminescent elastomer and its preparation method and application
A technology of block copolymerization and elastomer, applied in the direction of luminescent materials, electric solid devices, chemical instruments and methods, etc., can solve the problems of poor stretching effect and phase separation, and achieve high film formation, high stability, improved Effects of Intrinsic Stretchability
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Embodiment 1
[0036] Choose Ar as , the preparation of elastomer SBS-Ar1:
[0037]
[0038] Will (500 mg, 1,64 mmol) was put into a 50 mL two-neck reaction flask and sealed, and the nitrogen was purged three times. Styrene (0.5 mL, 4.37 mmol), ultra-dry cyclohexane (10 mL), ultra-dry THF (0.03 mL), 0.03 mL of n-BuLi were injected into the reaction flask, and the reaction was carried out at 65° C. for 1 h. Then, the temperature was lowered to 63° C., 7 mL of 1,3-butadiene was added, and the reaction was carried out for 2 h. Finally, add to the reaction flask (500 mg, 1.64 mmol), styrene (0.5 mL, 4.37 mmol), and reacted at 65° C. for 1 h. After the reaction, anhydrous ethanol was added to quench the unreacted n-BuLi. The reaction solution was concentrated, dissolved in DCM, precipitated with methanol, and purified by column chromatography. Then Soxhlet extraction was performed with n-hexane, methanol and acetone for 48h. The product was precipitated with methanol solvent again, a...
Embodiment 2
[0040] Choose Ar as , the preparation of elastomer SBS-Ar2 (wherein R is C 6 of straight-chain alkyl, the number of n is 1):
[0041]
[0042] Will (250 mg, 0.41 mmol) was put into a 50 mL two-neck reaction flask and sealed, and the nitrogen was purged three times. Styrene (0.5 mL, 4.37 mmol), ultra-dry cyclohexane (10 mL), ultra-dry THF (0.02 mL), 0.02 mL of n-BuLi were injected into the reaction flask, and the reaction was carried out at 65° C. for 1 h. Then, the temperature was lowered to 63° C., 7 mL of 1,3-butadiene was added, and the reaction was carried out for 2 h. Finally, add to the reaction flask (250 mg, 0.41 mmol), styrene (0.5 mL, 4.37 mmol), and reacted at 65° C. for 1 h. After the reaction, anhydrous ethanol was added to quench the unreacted n-BuLi. The reaction solution was concentrated, dissolved in DCM, precipitated with methanol, and purified by column chromatography. Then Soxhlet extraction was performed with n-hexane, methanol and acetone for 4...
Embodiment 3
[0044] Choose Ar as , the preparation of elastomer SBS-Ar3:
[0045]
[0046] Will (1 g, 2.81 mmol) was put into a 50 mL two-neck reaction flask and sealed, and the nitrogen was purged three times. Styrene (0.5 mL, 4.37 mmol), ultra-dry cyclohexane (12 mL), ultra-dry THF (0.08 mL), 0.08 mL of n-BuLi were injected into the reaction flask, and the reaction was carried out at 65° C. for 1 h. Then, the temperature was lowered to 63° C., 7 mL of 1,3-butadiene was added, and the reaction was carried out for 2 h. Finally, add to the reaction flask (1 g, 2.81 mmol), styrene (0.5 mL, 4.37 mmol), reacted at 65° C. for 1 h. After the reaction, anhydrous ethanol was added to quench the unreacted n-BuLi. The reaction solution was concentrated, dissolved in DCM, precipitated with methanol, and purified by column chromatography. Then Soxhlet extraction was performed with n-hexane, methanol and acetone for 48h. The product was precipitated with methanol solvent again, and the ela...
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