| |
 | Nanotech 2007 Vol. 4
Technical Proceedings of the 2007 NSTI Nanotechnology Conference and Trade Show, Volume 4
Chapter 2: Nanoparticles |
| | Noncovalent Catenation between Metal-Ligand Coordination Macrocycles and _-Cyclodextrin | | Authors: | Y. Liu | | Affilation: | Lawrence Berkeley National Laboratory, US | | Pages: | 206 - 209 | | Keywords: | [2]catenane, macrocycle, cyclodextrin, coordination | | Abstract: | Here we describe our findings on the facile preparation of first [2]catenanes from metal-ligand coordination macrocycles and b-CD ring. The [2]catenane formation is illustrated in Figure 1. Coordination between a divalent ligand and Pd(II) spontaneously gives rise to a macrocycle. This macrocycle is able to interlock with b-CD as a result of the hydrophobic interaction between the divalent ligand and b-CD ring. The complexation between the two ring components undergoes dynamic equilibrium in solution. The catenane formation was illustrated by various 1H NMR spectroscopic methods and UV-vis spectroscopic methods. By changing the metal center from Pd(II) to Pt(II), the dynamic nature of the [2]catenanes was altered to a “locked” one because the Pt(II)-pyridine coordination bond is irreversible (“locked”) under ordinary conditions in contrast to the reversible Pd(II)-pyridine bond. The reported method provides an extremely simple and highly efficient approach in generating [2]catenanes from readily available starting materials. Such findings will be extended towards the development of higher order polymers and switchable devices with embedded b-CD units. | | ISBN: | 1-4200-6376-6 |
| Pages: | 768 |
| Hardcopy: | $199.99 |
|
| Order: | Mail/Fax Form |
| Special: | 3 CD Set — 15% off with Free Shipping |
| Up | |
|
| nanoPRwire™ |
 |
| News Headlines |
 |
|
|
| |
| |
|
| | |
| |
|
|
