A smart fluorescent probe for discriminative detection of hydrazine and bisulfite from different emission channels

Naphthalene anhydride triphenylamine as a viscosity-sensitive molecular rotor for liquid safety inspection

“…Thus, an assessment of the level of viscosity can be achieved using this class of fluorophores. [11][12][13] Recently, several kinds of organic fluorophores have been exploited for food safety testing-including, for example, for the detection of metallic elements, [14][15][16] anions, [17][18][19] and various toxic volatile substances. [20][21][22] However, the development of fluorescent molecular rotors with large Stokes shifts and long emission wavelengths for carrying out liquid food safety inspection by measuring viscosity levels is still lacking.…”

Phthalimide conjugation turns the AIE-active tetraphenylethylene unit non-emissive: its use in turn-on sensing of hydrazine in solution and the solid- and vapour-phase

“…Fluorimetric sensing, which involves interacting analyte with compatible organic molecules, offers crucial advantages such as high sensitivity, selectivity and cost-effectiveness, and has attracted many researchers in recent times. 15,16 A good number of chemosensors have been developed for uorimetric detection of hydrazine [17][18][19] based on well-known conventional dye molecules such as rhodols, 20 uorescein, 21 BODIPY, 22 dansyl, 23 resorun, 24 coumarin, [25][26][27] and many others. [28][29][30][31][32][33] In most of these reported methods, hydrazine has been assayed by evaluating the intensity changes in the uorescence output of the probe molecule by varying the concentration of the analyte in solution phase by the use of a uorimeter.…”

A Novel Fluorescent Probe for Selective Detection of Hydrazine and Its Application in Imaging

“…To avoid a complex preparation and strict procedures, researchers who are interested in convenient detection have paid attention to fluorescent probes [ 13 ]. As reported, a typical probe includes the fluorophore (such as benzothiazole [ 14 ], 1,8-naphthalene imide [ 15 ], coumarin [ 16 ], rhodamine [ 17 ], phenothiazine [ 18 ], carbazole [ 19 ], and cyanine dye [ 20 ]) and the recognition group (such as acetyl [ 21 ], levulinate [ 22 ], 4-bromo butyrate [ 23 ], phthalimide [ 24 ], aldehyde [ 25 ], cyano [ 26 ]). As we claimed in our previous work [ 27 ], compared with complex tools (such as rare earth [ 28 ], aggregation-induced enhancement (AIE) [ 29 ], nanoparticles [ 30 ], or carbon dots [ 31 ]), small molecular probes were preferred in the closed-loop monitoring of hydrazine circulation.…”