A POSS-Based Supramolecular Amphiphile and Its Hierarchical Self-Assembly Behaviors
writer：Jiang, B. B.; Tao, W.; Lu, X.; Liu, Y.; Jin, H. B.; Pang, Y.; Sun, X. Y. *; Yan, D. Y.; Zhou, Y
keywords：hollow spheres, host–guest systems;nanoporous film, POSS, self-assembly
source：期刊
specific source：Macromol. Rapid Commun. 2012, 33, 767. http://onlinelibrary.wiley.com/doi/10.1002/marc.2011008
Issue time：2012年
A polyhedral oligomeric silsesquioxane (POSS)-based supramolecular amphiphile is prepared from the host–guest inclusion complexation between a mono adamantane-functionalized POSS (AD-POSS) and a β-cyclodextrin oligomer (P(β-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.