Electrochemical and optical sensing of polyions were first introduced in the early to mid
1990s via the development and study of the first heparin-sensitive potentiometric and optical …

By embedding carbon nanotubes into poly (3, 4-ethylenedioxythiophene)–poly
(styrenesulfonate)(PEDOT–PSS) supermolecular hydrogels in the presence of a very small …

The first paper-based polyion-sensitive optodes are reported. Dinonylnaphthalene sulfonic
acid (a cation exchanger) and chromoionophore I (a lipophilic optical pH indicator) are …

A polymeric membrane ion-selective electrode (ISE) for rapid potentiometric biosensing has
been developed. Butyrylcholinesterase, as a target enzyme, is immobilized on the surface of …

The medical diagnostic, the industry, and the biotechnology require rapid, sensitive, and
easy to use methods for trypsin activity determination. A simple approach, which meets all …

Proteases are involved in a large number of serious disease processes, while the assay of
proteolytic activity can be used for clinical diagnostics. In this paper we report a simple …

This paper describes a miniaturized multisensor platform (MP-ISES) consisting of
electrodes: a reference one (RE) and ion-selective electrodes (ISEs) for monitoring Na+, K+ …

We report a simple, sensitive, and selective electrochemical method for trypsin detection that
can cover a wide range of concentrations. The method is based on the proteolytic …

A potentiometric label-free and substrate-free (LFSF) aptasensing strategy which eliminates
the labeling, separation, and immobilization steps is described in this paper. An aptamer …

The problems of stability and reproducibility of potentials of solid contact ion-selective
electrodes with ionophore-based membranes were considered from the viewpoint of the …