Dynamics of a Supramolecular Capsule Assembly with Pyrene
- 14 March 2012
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 134 (12), 5544-5547
- https://doi.org/10.1021/ja301278p
Abstract
Water-soluble octaacid cavitands (OAs) form dimeric capsules suitable for guest incorporation. Our studies reveal that the mechanism of pyrene (Py) binding involves the rapid (<1 ms) formation of the Py·OA complex followed by slower binding with the second OA. The dissociation of the capsular OA·Py·OA complex occurs with a lifetime of 2.7 s, which is 5 orders of magnitude slower than the microsecond opening/closing (“breathing”) previously observed to provide access of small molecules to the encapsulated guest. These different dynamics of the capsules have a potential impact on how the chemistry of included guests could be altered.Keywords
This publication has 40 references indexed in Scilit:
- Supramolecular Coordination: Self-Assembly of Finite Two- and Three-Dimensional EnsemblesChemical Reviews, 2011
- Dynamics of capsuleplex formed between octaacid and organic guest molecules — Photophysical techniques reveal the opening and closing of capsuleplexCanadian Journal of Chemistry, 2011
- Kinetic resolution of constitutional isomers controlled by selective protection inside a supramolecular nanocapsuleNature Chemistry, 2010
- Template synthesis of precisely monodisperse silica nanoparticles within self-assembled organometallic spheresNature Chemistry, 2009
- The Acid Hydrolysis Mechanism of Acetals Catalyzed by a Supramolecular Assembly in Basic SolutionThe Journal of Organic Chemistry, 2008
- High-definition self-assemblies driven by the hydrophobic effect: synthesis and properties of a supramolecular nanocapsuleChemical Communications, 2008
- Photodimerization of acenaphthylene within a nanocapsule: excited state lifetime dependent dimer selectivityChemical Communications, 2006
- Templated Assembly of Water-Soluble Nano-Capsules: Inter-Phase Sequestration, Storage, and Separation of Hydrocarbon GasesJournal of the American Chemical Society, 2006
- Supramolecular Dynamics Studied Using PhotophysicsLangmuir, 2006
- Photophysics of preassociated pyrenes in aqueous polymer solutions and in other organized mediaChemical Reviews, 1993