An Intelligent Demethylase-Driven DNAzyme Sensor for Highly Reliable Metal Ions Imaging in Living Cells

The accurate intracellular imaging of metal ions requires an exquisite site-specific activation of metal-ion sensors, for which the pervasive epigenetic regulation strategy supplements an ideal alternative for its orthogonal control...

Conjugated molecules for colourimetric and fluorimetric sensing of sodium and potassium

New alkali metal ion sensors showing ratiometric colourimetric and fluorimetric responses with high selectivity and low limits of detection.

Functionalization of Macrobicyclic Amino Cryptands With Photoactive Fluorophoric Units for Metal Ion Sensing Application

In this report we discussed the photo physical properties of two hexaanthryl substituted cryptands, L1 and L2 respectively. Further, photophysical studies of L1 and L2 with different transition metal ions as an input are carried out to probe these molecules as metal ion sensors in solution.

Optical Fiber Refractometer Based Metal Ion Sensors

Research into optical fiber refractometers yielded remarkable results over the past decade. Numerous sensing schemes were proposed and demonstrated, which possessed different advantages while facing unique limitations. On top of their obvious applications in measuring refractive index changes of the ambient environment, several studies reported advanced applications of such sensors in heavy metal ion detection by means of surface coating of the refractometers with heavy metal ion sensitive materials. This paper surveys the effort these optical fiber metal ion sensors based on surface coated optical fiber refractometer, discusses different technologies and methods involved, and highlights recent notable advancements.