A chemosensor is reported with high sensitivity and selectivity for detection of fluoride anion. The recognition mechanism is attributed to a fluoride-triggered disruption of the hydrogen bond between imidazole and naphthalimide moieties, resulting in a noncoplanar geometry with low fluorescence.

Rosamine derivative RC-1, bearing macrocyclic ligand [15]aneNO(2)S(2) as receptor, was synthesized as an enhanced fluorescent chemosensor for Ag(+) in absolute aqueous solution. The fluorescence images in living cells show the potential application of RC-1. The difference of fluorescence enhancement process after binding with Ag(+)/Hg(2+) in acetonitrile/water solution was first proved by theor...

A neutral electrochemical chemosensor based on TTF exhibited high selectivity for H2PO4- over a wide range of anions and the significant C-H...O hydrogen bonding between C=C-H of the TTF unit and H2PO4- played an important role in regulating the selectivity.

The fluorescent ligand (L) based on the N2S2 pyridinophane macrocycle and the 7-nitrobenzo[1,2,5]oxadiazole (NBD) fluorogenic fragment has been synthesized to coordinate Pd(II) ions. Loaded on dye-doped silica nanoparticles, L can be used as a ratiometric fluorescent chemosensor for Pd(II) in water with high selectivity toward other metal ions including the platinum group ones.

An indole based "ratiometric" and "turn-off" tris(N-methylindolyl)methane based chemosensor depicting a contrasting fluorescent behavior towards Hg(2+) and Cu(2+) ions, exhibited NOR and YES logic functions, and also imaged intracellular Hg(2+) in cervix cancer (HeLa) cells.

in this work, a novel hg2+ sensitive fluorescent chemosensor is constructed. the proposednano-chemosensor was prepared through the preparation of 3-(benzo[d]thiazol-2-yl)-7-hydroxy-2h-chromen-2-one functionalized silica nanoparticles which has high magnetization properties (btc-fe3o4@sio2). theûnal product was characterized by fourier transform infrared spectroscopy (ft-ir), thermal gravimetric...

A novel fluorescent chemosensor containing a coumarin–thiourea unit and β- N-glycosyl moiety is designed, synthesized, characterized by 1 H NMR, 13 C elemental analysis. The can selectively efficiently detect Hg 2+ in CH 3 CN with detection limit of 2.6 μM.

An amphiphilic polythiophene-based chemosensor shows optical changes accompanied by the formation of random coils (i.e., fireworks) from backbone-planarized structures upon addition target oxyanions such as pyrophosphate and citrate. The difference in responses to enables pattern recognition-based discrimination a mixture. More information can be found Research Article Tsuyoshi Minami et al.

analytical chemistry has experienced, as well as other areas of science, a big change due to the needs and opportunities provided by analytical nanoscience and nanotechnology. now, nanotechnology is increasingly proving to be a powerful ally of analytical chemistry to achieve its objectives, and to simplify analytical processes. moreover, the information needs arising from the growing nanotechn...