Colorimetric and near-infrared spectrophotometric monitoring of bisulfite using glyoxal modified chromenylium-cyanine chemosensor: Smartphone and paper strip applications for on-site food and beverages control.

Detection of bisulfite (HSO) in food and beverages has vital importance because the excessive amount leads to ill effects on the human body. Colorimetric and fluorometric chromenylium-cyanine-based chemosensor CyR was synthesized and applied for high selective and sensitive analysis of HSO in red wine, rose wine and, granulated sugar with high recovery ranges and very fast response time without any interference from other competitive species. The limits of detection (LOD) for the UV-Vis and fluorescence titrations were found as 11.

Development of a new near-infrared, spectrophotometric, and colorimetric probe based on phthalocyanine containing mercaptoquinoline unit for discriminative and highly sensitive detection of Ag, Cu, and Hg ions.

A new near-infrared, spectrophotometric, and colorimetric probe based on a phthalocyanine-containing mercaptoquinoline unit (MQZnPc) has been constructed and utilized for discriminative and highly selective/sensitive detection of Ag, Cu, and Hg ions by using proper masking agents like EDTA, KI, and NaCl. The probe only responds to Ag, Cu, and Hg among the tested ions without any interference. The probe performs quite well (the limit of detection: 160 ppb, 148 ppb, and 276 ppb of Ag, Cu, and Hgions for UV-Vis, and 15 ppb, 37 ppb, and 467 ppb of Ag, Cu, and Hg ions for fluorescence, respectively), and has a fast response time (150 sec, 90 sec, and 90 sec of Ag, Cu, and Hgions for UV-Vis, and 300 sec, 240 sec, and 90 sec Ag, Cu, and Hgions for fluorescence, respectively).

A methionine biomolecule-modified chromenylium-cyanine fluorescent probe for the analysis of Hg in the environment and living cells.

The objective of the study is, for the first time, to construct a new near infrared (NIR) fluorophore, spectrophotometric, colorimetric, ratiometric, and turn-on probe (CSME) based on chromenylium cyanine platform decorated with methionine biomolecule to provide an efficient solution for critical shortcoming to be encountered for analysis of hazardous Hg in environment and living cell. The CSME structure and its interaction with Hg ion were evaluated by NMR, FTIR, MS, UV-Vis and fluorescence methods as well as Density Functional Theory (DFT) calculations. The none fluorescence CSME having spirolactam ring only interacted with Hg in aqueous solution including competing ions.

A new Fe-selective, sensitive, and dual-channel turn-on probe based on rhodamine carrying thiophenecarboxaldehyde: Smartphone application and imaging in living cells.

A new dual-channel probe based on rhodamine B derivative (MSB) was successfully designed, synthesized, characterized by Nuclear Magnetic Resonance (NMR) Spectroscopy, Fourier Transform Infrared Spectrophotometer (FTIR), Matrix Assisted Laser Desorption Ionization Time of Flight Mass Spectrometry (MALDI-TOF MS), X-ray Photoelectron Spectroscopy (XPS), and Single Crystal X-rayDiffraction, and the sensing abilities toward Fe cation have been demonstrated and the probe was successfully utilized for fluorescence imaging of Fe in living cells. The probe demonstrated quite fast, sensitive, and selective response to Fe by causing an extreme enhancement in UV-vis and fluorescence spectroscopy techniques in the buffered aqueous media which makes MSB a dual-channel probe. While the color of MSB solution was initially light yellow, it turned pink in the presence of Fe, which provided highly selective naked-eye determination among several ions as alkaline, alkaline-earth, and transition metal ions.

A new highly Selective, sensitive and NIR spectrophotometric probe based on AB-Type of unsymmetrical phthalocyanine for hazardous Be recognition.

The aim of this work is to construct a new AB-type of unsymmetrical and ratiometric phthalocyanine (Pc) based-probe O-ABZnPc to provide an effective solution to critical inadequacy to be experienced for the detection of hazardous Be. O-ABZnPc enabling strong absorption and emission in Near-Infrared region (λ-λ wavelengths of 694-712 nm) showed excellent selectivity and sensitivity toward Be among competitive metal ions by both spectrophotometric and fluorometric methods. The probe with oligomeric Pc form in THF was degraded with the addition of aqueous Be and arranged to J-aggregation form, resulting in a remarkably diminishing in Q-band at 694 nm as well as a new band formation at 746 nm, and a considerably decreasing in fluorescence emission.

Construction of anthraquinone functional zinc phthalocyanine sensor platform for ultra-trace amount of water determination in tetrahydrofuran and N,N-Dimethylformamide.

Anthraquinone functional zinc phthalocyanine sensor platform was utilized for ultra-trace amount of water determination in THF and DMF. Using the fluorometric method, the water content in THF was determined with a LOD of 2.27 × 10 M and a response time of 1 s.

Superior Sensor for Be Ion Recognition via the Unprecedented Octahedral Crystal Structure of a One-Dimensional Coordination Polymer of Crown Fused Zinc Phthalocyanine.

The unprecedented one-dimensional (1-D) coordination polymer of crown fused zinc phthalocyanine (P-CfZnPc) with an octahedral crystal structure and with intermolecular packing that has superior multichannel sensor ability for Be ion recognition was prepared and characterized by single-crystal X-ray diffraction analysis (XRD) and a wide range of spectroscopic and voltammetric methods. An exceptional feature of the crystal structure of P-CfZnPc is that each zinc ion in the phthalocyanine (Pc) polymer is coordinated by the four isoindole nitrogen atoms and an outer oxygen atom of the Pc molecule. This structure is the first example of an octahedral arrangement in a 1-D polymeric chain for zinc phthalocyanines (ZnPcs) and zinc porphyrins (ZnPs) reached without the presence of a coordinating solvent, which was confirmed by XRD analysis.