A glance into the bulk of solvent polymeric pH membranes

摘要: The pH-sensitive chromoionophores brought the dream of ion-selective mem- brane scientist close to realization. With help these molecules, one can build pH-sen- sitive, electrodes and look into bulk solvent polymeric membranes dur- ing potentiometric measurements (spectropotentiometry) image concentration profiles in situ with high spatial temporal resolution. combination electrochemical opti- cal information helped interpret non-idealities responses, suppress or tailor undesirable transport across sensor membranes, estimate residual lifetime chronically implanted sensors. These novel opportunities provide feedback membrane optimizations are expected lead systems picomolar detection limits superb selectivities.