Abstract
Pyridyl amide functionalised gold nanoparticles have been used to bind and sense simple anions and ion pairs by means of shifts in the intensity and wavelength of the nanoparticles' surface plasmon resonance absorption.
Amidopyridyl functionalised gold nanoparticles bind to both anions and cations.
Acknowledgements
We thank the EPSRC for a studentship (M.H.F.).