Self-assembled supramolecular nanocarrier hosting two kinds of guests in the site-isolation state.
作者： Xing-Long Lou , Fa Cheng , Peng-Fei Cao , Qiang Tang , Hua-Ji Liu
关键词: Methyl blue 、 Polymer chemistry 、 Supramolecular chemistry 、 Methyl orange 、 Organic chemistry 、 Calixarene 、 Cationic polymerization 、 Non-covalent interactions 、 Chemistry 、 Proton NMR 、 Amphiphile
摘要: Hyperbranched polyethyleni- mine (HPEI) was simply mixed with a solution of amphiphilic calix(4)arene (AC4), which possesses four phenol groups and aliphatic chains, in chloroform. This resulted the novel supramolecular complex HPEI-AC4 through noncovalent interaction amino HPEI AC4. The formed complexes were characterized by 1 H NMR spec- troscopy dynamic light scattering. cationic water-soluble dye methyl blue (MB) anionic water-solu- ble orange (MO) used as model guests to test perfor- mance supramolec- ular nanocarrier. It found that could accommodate MO into core. encapsulation capacity pH sensi- tive, reached maximum loading under weakly acidic conditions. loaded molecules be totally released when value re- duced around 4.5 or raised 9.5, this process rever- sible. not only ac- commodate core but also simulta- A load MB mole- cules using AC4 shell, thereby realizing site isolation two kinds functional units. amount encapsulated controlled varying ratio hydroxyl HPEI.
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