A new approach inspired by fluorescent labeling technology to fluorescently functionalize MOFs via post-modification is reported. A fluorescein-containing MOF FITC@BTPY-NH(2) was synthesized for selective sensing and adsorption of Ag(+) in aqueous solution.

A fluorescence turn-on receptor based on triazole linked calix[4]arene (L) for selective recognition of Zn(2+) in aqueous-methanolic HEPES buffer has been developed and showed its utility for sensing Zn(2+) in blood serum milieu.

A sensitive and selective amperometric sensing platform for lead (Pb(2+)) was developed based on a Pb(2+)-induced G-rich DNA conformational switch from a random-coil to G-quadruplex (G4) with crystal violet as the G4-binding indicator.

A sensitive turn-on fluorescent sensor based on single-layer MnO2 nanosheet-quenched fluorescent carbon quantum dots has been developed for rapid and selective sensing of glutathione in aqueous solutions, as well as in living cells.

A new electrochemical sensor was demonstrated for selective sensing of 3,4-dihydroxyphenylacetic acid (DOPAC) through a non-oxidative mechanism by using single-walled carbon nanotubes (SWNTs) as the electronic transducer and a synthetic cyclophane electron acceptor as the recognition element.

Accurate sensing of ion concentrations in body fluids is importance to monitor cell functions, and any deviation the concentration serves as a warning sign pathophysiological conditions. Here, fabrication approach for an integrated device consisting two electrochemical transistors, capable selective simultaneous detection between potassium sodium ions analyte demonstrated. A common in-plane gat...

Nanowire field effect transistors (NW-FETs) can serve as ultrasensitive detectors for label-free reagents. The NW-FET sensing mechanism assumes a controlled modification in the local channel electric field created by the binding of charged molecules to the nanowire surface. Careful control of the solution Debye length is critical for unambiguous selective detection of macromolecules. Here we sh...

We review recent progress in the development of two-dimensional (2-D) photonic crystal (PC) materials for chemical and biological sensing applications. Self-assembly methods were developed in our laboratory to fabricate 2-D particle array monolayers on mercury and water surfaces. These hexagonal arrays strongly forward Bragg diffract light to report on their array spacings. By embedding these 2...

We present a viscometric affinity biosensor that can potentially allow continuous multi-analyte monitoring in biological fluids like blood or plasma. The sensing principle is based on the detection of viscosity changes of a polymeric solution which has a selective affinity for the analyte of interest. The chemicomechanical sensor incorporates an actuating piezoelectric diaphragm, a sensing piez...