Methionine-derived Schiff base as selective fluorescent “turn-on” chemosensor for Zn2+ in aqueous medium and its application in living cells imaging

Rahman, Faiz-Ur; Ali, Amjad; Guo, Rong; Tian, Jia; Wang, Hui; Li, Zhan‐Ting; Zhang, Dan‐Wei

doi:10.1016/j.snb.2015.01.128

Cited by 35 publications

(1 citation statement)

References 51 publications

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“…To this end, numerous fluorescent ligands, whose emission changes signficantly on cation complexation, have been developed and employed for the detection of metal ions in biological and environmental samples [5][6][7][8][9][10]. For example, aromatic 2-hydroxy-substituted Schiff bases (1) [11,13,18,[20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35] and hydroxyphenyl and hydroxynaphthylpyridines (2, Scheme 1) [17,[36][37][38] have been shown to act as colorimet-ric, fluorimetic and electrochemical probes for metal ions, because they form complexes with particular cations with high selectivity, which in turn leads to a significant change of their optical or electrochemical properties.…”

Section: Introductionmentioning

confidence: 99%

Fluorimetric Detection of Zn2+, Mg2+, and Fe2+ with 3-Hydroxy-4-Pyridylisoquinoline as Fluorescent Probe

Pinheiro

Ihmels

2020

J Fluoresc

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The suitability of 3-hydroxy-4-pyridylisoquinoline to operate as fluorescent chemosensor for the detection of metal ions was investigated. For that purpose, the interactions of the title compound with selected metal ions were investigated by absorption and emission spectroscopy. The complexation of Zn2+, Fe2+, Mg2+ with 1:1 and 2:1 stoichiometry leads to characteristic optical responses that depend significantly on the employed solvents, thus allowing for the fluorimetric identification and detection of particular metal cations in a matrix-based pattern analysis or by fluorimetric titrations. Graphical abstract

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Section: Introductionmentioning

confidence: 99%

Fluorimetric Detection of Zn2+, Mg2+, and Fe2+ with 3-Hydroxy-4-Pyridylisoquinoline as Fluorescent Probe

Pinheiro

Ihmels

2020

J Fluoresc

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Target Analyte Interaction with a New Julolidine Coupled Benzoxazole‐based Dyad: A combined Photophysical, Theoretical (DFT), and Bioimaging Study

et al. 2022

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A julolidine-coupled benzoxazole-based fluorescent chemosensor (BPOZ) is designed and developed to investigate the different target analyte interactions spectroscopically. Based on the 'off-on-off' photoluminescence mechanism, the as-prepared BPOZ is used for sequentially detecting Zn 2 + and HSO 4À ions, respectively. The UV-visible absorption and photoluminescence spectral behavior is intramolecular charge transfer (ICT) in nature. When Zn 2 + ions bind with BPOZ, its fluorescence is significantly enhanced at 512 nm due to chelation-enhanced fluorescence. A green color emission is also visible under 365 nm UV light exposure, which is also confirmed by the color chromaticity diagram. Chelation-enhanced photoluminescence is also manifested in the lifetime decay analysis. Further, it is well supported by different spectroscopic techniques and DFT analysis. In the presence of HSO 4À ions, photoluminescence of the Zn 2 + chelated BPOZ complex is significantly reduced, rebirthing the free BPOZ. The detection limit of BPOZ for Zn 2 + and Zn 2 + chelated BPOZ complex towards detecting Zn 2 + and HSO 4À ions is established to be in the order of nM and μM range, respectively, in the solution phase. Among the various explosive nitroaromatic compounds, picric acid (PA) quenched the emission of the Zn 2 + chelated BPOZ complex, and the quenching mechanism is found to be both static and dynamic in nature. Using these chemically prearranged inputs and optical outputs, two inputs, INHIBIT, and three inputs, combinational logic gates have been constructed. The BPOZ chemosensor and Zn 2 + chelated BPOZ complex are also employed to map Zn 2 + ions and PA in the living cell. The performance of the BPOZ chemosensor and Zn 2 + chelated BPOZ complex toward Zn 2 + ions and PA proved that it could be exploited as a signal tool for environmental and biological samples.

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A Chromone-Derived Schiff-Base Ligand as Al3+ “Turn on” Fluorescent Sensor: Synthesis and Spectroscopic Properties

Qin

Wang

et al. 2015

J Fluoresc

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In this study, a novel chromone-derived Schiff-base ligand called 6-Hydroxy-3-formylchromone (2'-furan formyl) hydrazone (HCFH) has been designed and synthesized as a "turn on" fluorescent sensor for Al(3+). This sensor HCFH showed high selectivity and sensitivity towards Al(3+) over other metal ions investigated, and most metal ions had nearly no influences on the fluorescence response of HCFH to Al(3+). Additionally, the significant enhancement by about 171-fold in fluorescence emission intensity at 502 nm was observed in the presence of Al(3+) in ethanol, and it was due to the chelation-enhanced fluorescence (CHEF) effect upon complexation of HCFH with Al(3+) which inhibited the photoinduced electron transfer (PET) phenomenon from the Schiff-base nitrogen atom to chromone group. Moreover, this sensor formed a 1 : 1 complex with Al(3+) and the fluorescence response of HCFH to Al(3+) was nearly completed within 1 min. Thus, this sensor HCFH could be used to detect and recognize Al(3+) for real-time detection.

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Methionine-derived Schiff base as selective fluorescent “turn-on” chemosensor for Zn2+ in aqueous medium and its application in living cells imaging

Cited by 35 publications

References 51 publications

Fluorimetric Detection of Zn2+, Mg2+, and Fe2+ with 3-Hydroxy-4-Pyridylisoquinoline as Fluorescent Probe

Fluorimetric Detection of Zn2+, Mg2+, and Fe2+ with 3-Hydroxy-4-Pyridylisoquinoline as Fluorescent Probe

Target Analyte Interaction with a New Julolidine Coupled Benzoxazole‐based Dyad: A combined Photophysical, Theoretical (DFT), and Bioimaging Study

A Chromone-Derived Schiff-Base Ligand as Al3+ “Turn on” Fluorescent Sensor: Synthesis and Spectroscopic Properties

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