期刊
MACROMOLECULAR RAPID COMMUNICATIONS
卷 33, 期 9, 页码 767-772出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.201100877
关键词
hollow spheres; host-guest systems; nanoporous film; POSS; self-assembly
资金
- National Basic Research Program [2009CB930400, 2010CB735505, 2012CB821500]
- National Natural Science Foundation of China [21074069, 21104096, 91127047]
- Foundation for the Author of National Excellent Doctoral Dissertation of China
- Fok Ying Tung Education Foundation [14029]
A polyhedral oligomeric silsesquioxane (POSS)-based supramolecular amphiphile is prepared from the hostguest inclusion complexation between a mono adamantane-functionalized POSS (AD-POSS) and a beta-cyclodextrin oligomer (P(beta-CD)). Assisted by the interface of H2O/toluene, the obtained supramolecular hybrids self-assemble into stable hollow nanospheres with thick walls. These hollow nanospheres aggregate together into a sphere layer through a spin coating technique, which then further transforms into a thin porous film containing nanometer-scale holes. The hollow nanospheres have a low cytotoxicity. The in vitro cell culture indicates the nanoporous films promote adhesion and proliferation of cells. The self-assembly morphologies and structures have been carefully characterized by SEM, TEM, AFM, DLS, XPS and water-contact angle measurements, and the self-assembly mechanism has also been discussed.
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