Block-Selected Molecular Recognition and Formation of Polypseudorotaxanes between Poly(propylene oxide)-Poly(ethylene oxide)-Poly(propylene oxide) Triblock Copolymers and α-Cyclodextrin
✍ Scribed by Jun Li; Xiping Ni; Kam Leong
- Publisher
- John Wiley and Sons
- Year
- 2003
- Tongue
- English
- Weight
- 179 KB
- Volume
- 115
- Category
- Article
- ISSN
- 0044-8249
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Suzuki reaction under phase transfer conditions: 15 mmol phenylboronic acid, 13 mmol p-iodoanisole, 0.01 mmol PdCl 2 [Ph 2 P(CH 2 ) 4 SO 3 K] 2 , 45 mmol Na 2 CO 3 in toluene/ethanol/water = 15 : 15 : 15 ml with 400 mg of different block copolymers; at 78 8C
Phase behavior of aqueous systems containing block copolymers of poly(ethylene oxide (PEO) and poly(propylene oxide) (PPO) was evaluated by building up temperature-concentration phase diagrams. We have studied bifunctional triblock copolymers (HO-PEO-PPO-PEO-OH) and monofunctional diblock copolymers