These authors have contributed equally and both should be considered first author.
pH-Responsive Supramolecular Nanovalves Based on Cucurbituril Pseudorotaxanes†
Article first published online: 14 FEB 2008
Copyright © 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Angewandte Chemie International Edition
Volume 47, Issue 12, pages 2222–2226, March 7, 2008
How to Cite
Angelos, S., Yang, Y.-W., Patel, K., Stoddart, J. Fraser. and Zink, Jeffrey I. (2008), pH-Responsive Supramolecular Nanovalves Based on Cucurbituril Pseudorotaxanes. Angew. Chem. Int. Ed., 47: 2222–2226. doi: 10.1002/anie.200705211
This research was supported by a Nanoscale Interdisciplinary Research Team (NIRT) grant (ESC-0103559) and a DMR (0346610) grant from the National Science Foundation.
- Issue published online: 3 MAR 2008
- Article first published online: 14 FEB 2008
- Manuscript Received: 12 NOV 2007
- ESC-0103559. Grant Number: 0346610
- National Science Foundation
- heterogeneous catalysis;
- host–guest systems;
- mesoporous materials;
- molecular devices;
- surface chemistry
An open and closed case: pH-controllable nanovalves that operate in water have been produced by attaching pseudorotaxanes to the surface of mesoporous silica nanoparticles. The nanovalves are able to contain guest molecules (rhodamine B, red circles) within the nanopores at acidic and neutral pH values but release them on command when the pH value is raised (see picture).