Xuewei Wang, Yu Qin and Mark E. Meyerhoff
Chem. Commun., 2015,51, 15176-15179
DOI:
10.1039/C5CC06770G,
Communication
An ionophore-based ion-selective optode platform on paper is described for the first time with a sodium optode as the example. Cellulose paper is shown to be an excellent substrate for adsorption of the required chromoionophore, ionophore, and ion-exchanger species. These adsorbed components form a hydrophobic phase that enables heterogeneous optical ion sensing in the absence of any plasticizer or organic polymer phase.
