Fast and easy detection of hypochlorite by a smartphone-based fluorescent turn-on probe: Applications to water samples, zebrafish and plant imaging.

We have developed a fluorescent probe DBT-Cl ((E)-2-(2-(4-(diphenylamino)benzylidene) hydrazinyl)-N,N,N-trimethyl-2-oxoethan-1-aminium chloride) for ClO with an aggregation-induced emission (AIE) strategy depending on solvent polarity. DBT-Cl possessed a prominent solvatochromic emission property with intramolecular charge transfer (ICT) from the TPA (triphenylamine) to the amide group, which was studied by spectroscopic analysis and DFT calculations. These unique AIE properties of DBT-Cl led to the recognition of ClO with high fluorescent selectivity.

A water-soluble colorimetric chemosensor for sequential probing of Cu and S and its practical applications to test strips, reversible test, and water samples.

A water-soluble colorimetric chemosensor NHOP ((E)-1-(2-(2-(2-hydroxy-5-nitrobenzylidene)hydrazineyl)-2-oxoethyl)pyridin-1-ium) chloride) was developed for the sequential probing of Cu and S. NHOP underwent a color change from pale yellow to colorless in the presence of Cu in pure water. The binding ratio between NHOP and Cu was confirmed to be 1:1 by the Job plot and ESI-MS (electrospray ionization mass spectrometry).

Highly Selective Detection of Al by Carboxamide-Based Fluorescent Chemosensor.

We designed a carboxamide-based fluorescent chemosensor HTPQ ((E)-2-(((8-hydroxy-2,3,6,7-tetrahydro-1H,5H-pyrido[3,2,1-ij]quinolin-9-yl)methylene)amino)thiophene-3-carboxamide) for detecting Al. HTPQ could probe Al by fluorescence enhancement. Limit of detection for Al toward HTPQ was 1.

A benzothiazole-based fluorescent and colorimetric probe for the detection of ClO and its application to zebrafish and water sample.

A benzothiazole-based fluorescent and colorimetric chemosensor BZD ((E)-2-(benzo[d]thiazol-2-yl)-5-((4-(diethylamino)-2-hydroxybenzylidene)amino)phenol) was applied for detecting ClO. BZD showed fluorescence quenching and color variation for ClO via oxidative reaction between ClO and the imine bond. It could effectively detect ClO over various competitive analytes.

A New Reversible Colorimetric Chemosensor Based on Julolidine Moiety for Detecting F.

We synthesized an original reversible colorimetric chemosensor PDJ ((E)-9-((2-(6-chloropyridazin-3-yl)hydrazono)methyl)-2,3,6,7-tetrahydro-1H,5H-pyrido[3,2,1-ij]quinolin-8-ol) for the detection of F. PDJ displayed a selective colorimetric detection to F with a variation of color from colorless to yellow. Limit of detection of PDJ for F was calculated as 12.

Developing a new chemosensor targeting zinc ion based on two types of quinoline platform.

A chemosensor DQ (2-(2-(quinolin-2-yl)hydrazinyl)-N-(quinolin-8-yl)acetamide), based on two quinoline moieties, has been synthesized. DQ could detect zinc ion through fluorescence turn-on in aqueous media. Limit of detection was calculated as 0.

Fluorescent determination of zinc by a quinoline-based chemosensor in aqueous media and zebrafish.

A quinoline-based fluorescence sensor QDTD was developed for Zn. QDTD can detect Zn by fluorescence turn-on. Detecting limit (0.

A multiple target chemosensor for the sequential fluorescence detection of Zn and S and the colorimetric detection of Fe in aqueous media and living cells.

A novel multiple target sensor, (E)-5-((4-(diethylamino)-2-hydroxybenzyldene)amino)-1H-imidazole-4-carboxamide (DHIC), was synthesized for fluorescence detection of Zn and S and colorimetric detection of Fe in aqueous media. DHIC can operate as a turn "on-off" sequential fluorescent sensor for Zn and S. Detection limits (1.