A Naphthalimide-Based Fluorescence “Off-on-Off” Chemosensor for Relay Detection of Al3+ and ClO−

Abstract

A novel Al 3+ chemosensor NPA was designed and synthesized on basis of the mechanism of ICT and CHEF. Upon addition of Al 3+ , the probe NPA displayed a bright green fluorescence under UV radiation and visual color change from yellow to colorless. Spectrum titrations showed that NPA could be recognized as a fluorescent turn-on probe with 10 −8 M detection level. The probe was successfully applied in real water sample and test paper. More important, NPA -Al 3+ complex were used as a fluorescent turn-off probe for the detection of ClO − with the detection as low as 2.34 × 10 −8 M. The performance of NPA to Al 3+ and NPA -Al 3+ complex to ClO − demonstrated that NPA could be served as a sensitive probe and exhibit INHIBIT logic gate behavior with Al 3+ and ClO − as inputs.

Synthesis of naphthalimide-type chemsensor and its application in quality evaluation for polygonatum sibiricum Red

“…Using pure methanol solution as a blank, full-wavelength scanning, the absorbance value under the maximum absorption wavelength was recorded, and the operation was repeated three times. For fluorescence measurements, the test solutions of HAN-monosaccharides (5 μM) were prepared with excitation set at 448 nm, and the excitation and emission slit widths both were 10 nm ( Sun et al, 2019 ). For Fourier transform infrared (FT-IR) analyses, HAN-Glc (2 mg) was mixed with dried potassium bromide (200 mg) to ground and pressed under a vacuum condition by using a Nicolet 5700 FT-IR spectrometer and recorded in the wavelength region of 4,000–400 cm −1 .…”

A Significant Fluorescence Turn-On Probe for the Recognition of Al3+ and Its Application

“…A mass spectra signal at 465.1056 m/z was attributed to [BHMMP+Al 3+ +C2H5OH+H2O-2H − ] + (calcd: 465.1065), which proved that the stoichiometry of the chelate is 1:1 and revealed that the coordination sphere of Al 3+ was composed of solution components, such as water and ethanol (Figure 5). There was a strong binding affinity of BHMMP with Al 3+ , and the association constants calculated from the results of fluorescence and absorption titration experiments were 3.10 × 10 4 (Figure S2) and 2.55 × 10 3 M −1 (Figure S3), by the Benesi-Hildebrand plot, respectively [57][58][59].…”

An Acylhydrazone-Based Fluorescent Sensor for Sequential Recognition of Al3+ and H2PO4−

“…While numerous fluorescent chemosensors for a single analyte have been reported, fluorescent chemosensors that allow the sequential sensing of multiple analytes with great selectivity and sensitivity are still needed [19][20][21] because they are more cost-effective, recyclable and practical [22][23][24]. Several fluorescent sensors have been addressed for consecutive sensing of Al 3+ and several anions [25][26][27][28] or several cations and H 2 PO 4 − [29][30][31]. In addition, Kumar et al reported a fluorescent sensor for sequential sensing of Al 3+ and H 2 PO 4 − /HSO 4 − [32].…”