Surface molecular tailoring using pH-switchable supramolecular dendron-ligand assemblies

Authors

Parvez Iqbal, University of Birmingham
Frankie J. Rawson, University of Birmingham
Watson K. W Ho, Chinese University of Hong Kong
Siu-Fung Lee, Chinese University of Hong Kong
Ken Cham-Fai Leung, Chinese University of Hong Kong
Xingyong Wang, Nanjing UniversityFollow
Akash Beri, University of Birmingham
Jon A. Preece, University of Birmingham
Jing Ma, Nanjing University
Paula M. Mendes, University of Birmingham

RIS ID

108684

Publication Details

Iqbal, P., Rawson, F. J., Ho, W. K. W., Lee, S., Leung, K., Wang, X., Beri, A., Preece, J. A., Ma, J. & Mendes, P. M. (2014). Surface molecular tailoring using pH-switchable supramolecular dendron-ligand assemblies. ACS Applied Materials and Interfaces, 6 (9), 6264-6274.

Abstract

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 dibenzo[24]crown-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.