Department of Chemistry
Surface molecular tailoring using ph-switchable supramolecular dendron-ligand assemblies
The rational design of materials with tailored properties is of paramount importance for a wide variety of biological, medical, electronic and optical applications. Here we report molecular level control over the spatial distribution of functional groups on surfaces utilizing self-Assembled monolayers (SAMs) of pH-switchable surface-Appended pseudorotaxanes. The supramolecular systems were constructed from a poly(aryl ether) dendron-containing a dibenzocrown-8 (DB24C8) macrocycle and a thiol ligand-containing a dibenzylammonium recognition site and a fluorine end group. The dendron establishes the space (dendritic effect) that each pseudorotaxane occupies on the SAM. Following SAM formation, the dendron is released from the surface by switching off the noncovalent interactions upon pH stimulation, generating surface materials with tailored physical and chemical properties. © 2014 American Chemical Society.
binary self-Assembled monolayers, functional surfaces, pseudorotaxanes, self-Assembly, supramolecular systems
Source Publication Title
ACS Applied Materials and Interfaces
American Chemical Society
Link to Publisher's Edition
Iqbal, Parvez, Frankie J. Rawson, Watson K.-W. Ho, Siu-Fung Lee, Ken Cham-Fai Leung, Xingyong Wang, Akash Beri, Jon A. Preece, Jing Ma, and Paula M. Mendes. "Surface molecular tailoring using ph-switchable supramolecular dendron-ligand assemblies." ACS Applied Materials and Interfaces 6.9 (2014): 6264-6274.