The Influence of Arylene and Alkylene Units on the Structuring of Urea‐Based Bridged Silsesquioxanes
作者:Benoît P. Pichon、Sylvana Scampini、Catherine Bied、Joël J. E. Moreau、Michel Wong Chi Man
DOI:10.1002/ejic.201200616
日期:2012.11
The influence of the intrinsic self-assembling properties of rigid or semirigid aromatic units as the main substructures combined with the effect of the alkylene side chains as linkers on the nanostructure of bridgedsilsesquioxanes was studied. The symmetry of the organic units was found to control the dimensionality of the hybrid nanostructure. Bis(silylated) aromatic units lead to lamellar hybrids
A pH-driven molecular shuttle based on rotaxane-bridged periodic mesoporous organosilicas with responsive release of guests
作者:Meng Gao、Shuhua Han、Yongfeng Hu、James J. Dynes、Xiangguo Liu、Dongniu Wang
DOI:10.1039/c5ra27955k
日期:——
As a strategy for achieving integration of two-state rotaxane based molecular switches and ordered solid-state frameworks, a pH-driven molecular shuttle was immobilized into the framework of the periodic mesoporousorganosilicas (PMOs) that possessed enough free space to accommodate the mechanical motion of β-cyclodextrins (β-CDs). In this molecular shuttle, β-CDs threaded a symmetrical molecular thread