Rapid and visual detection for hypochlorite of an AIE enhanced fluorescence probe

Abstract

In this paper, a new 'turn-on' fluorescence probe for the rapid, sensitive, and visual detection of hypochlorite is reported. The push-pull type trianiline-tricyanofuranbased fluorescent probe was prepared using a condensation reaction between tricyanofuran and the thiophene-trianiline derivative that had high quantum yields and showed aggregation-induced emission enhanced properties. Upon exposure to hypochlorite, prominent fluorescence enhancement of the probe was observed via the release of the fluorophore from the probe. The probe showed a ratiometric absorption change at 315 nm and 575 nm. Importantly, the probe showed an excellent detection limit for hypochlorite at 1.2 × 10 −7 M in solution and it was successfully applied for monitoring hypochlorite in waste water by test strip. This work reports a new fluorescence analytical sensing method for hypochlorite that has potential practical value in environmental monitoring and biological discrimination.

A Two-Photon Excited Near-Infrared Iridium(III) Complex for Multi-signal Detection and Multimodal Imaging of Hypochlorite

“…To date, many great analytical techniques for ClO – detection have been developed, including electrochemistry, colorimetry, luminescence/fluorescence, and chromatograpy. − Thanks to its high sensitivity, specificity, short response time, and convenient operation, , luminescence is attracting widespread attention. Moreover, numerous luminescent probes have been reported for the detection of ClO – based on the strong oxidation characteristic of ClO – that can realize in situ imaging of biomolecules by using microscopic imaging technology in recent years. − However, the absorption and emission wavelengths of most luminescent probes are in the visible light range, which is not suitable for in tissues and vivo imaging.…”

Aggregation‐induced Emission Properties of Triphenylamine Chalcone Compounds

“…Recently, triphenylamine derivatives have also been extensively studied on AIE behavior [18][19][20][21][22][23][24] . Owing to the unique helical structure of triphenylamine, partial access of triphenylamine group to 2hydroxychalcone can effectively avoid face-to-face π-π accumulation of molecules, inhibit the production of ACQ effects, and enhance its uorescence in the aggregated state.…”

A highly selective aggregation‐induced emission fluorogen for sensitive detection of Al3+ in living cells

“…Organic fluorophores with AIE characteristics can completely eradicate the aggregation‐caused quenching effect. Therefore they have potential application in fluorescence detection, plus high selectivity, sensitivity, and minimal autofluorescence . In this study, we prepared a fluorescent probe based on coumarin and furan‐2‐carbohydrazide using the Schiff base reaction (Scheme ).…”