Preparation and Characterization of Inclusion Complex of Carbosilane Dendrimers and Cyclodextrins
作者:Lin Zhu、Huashi Liu、Ruifang Guan、Chuanjian Zhou
DOI:10.14233/ajchem.2013.15614
日期:——
In this paper, 1st-4th generation of carbosilane dendrimers [G1(PhBr)-G4(PhBr)] were synthesized with bromophenyl group as a core molecule. Then, the inclusion reaction of a-, b-, g-cyclodextrin and four generations of carbosilane dendrimers mentioned above had been studied. The products were characterized by infrared spectroscopy, X-ray diffraction, nuclear magnetic resonance (1H, 13C and 29Si NMR). Results showed that each G1(PhBr) would form inclusion complexes with two cyclodextrins molecules. The inclusion complexes of G2(PhBr) and cyclodextrins were amphiphilic, while bromophenyl cores of G3(PhBr) and G4(PhBr) were entrapped by increasing “branches” made them more difficult to form inclusion complexes with the increasing generation of dendrimers, none of three kinds of cyclodextrins would form inclusion complexes with more than 2nd-generation dendrimers.
本文合成了以溴苯基为核心分子的第1-4代碳硅烷树枝状聚合物[G1(PhBr)-G4(PhBr)]。然后,研究了a-、b-、g-环糊精与上述四代碳硅烷树枝状聚合物的包合反应。通过红外光谱、X射线衍射、核磁共振(1H、13C、29Si NMR)对产物进行了表征。结果表明,每个G1(PhBr)都会与两个环糊精分子形成包合物。 G2(PhBr)和环糊精的包合物是两亲性的,而G3(PhBr)和G4(PhBr)的溴苯基核心由于“支链”的增加而被包埋,随着树枝状大分子生成的增加,它们更难形成包合物,没有一个三种环糊精可与第二代以上树枝状大分子形成包合物。