Results 21 to 30 of about 12,447 (227)

A pyrene-functionalized triazole-linked hexahomotrioxacalix[3]arene as a fluorescent chemosensor for Zn²⁺ ions [PDF]

open access: yes, 2016
A new pyrenyl appended hexahomotrioxacalix[3]arene L featuring 1,2,3-triazole linkers was synthesized as a fluorescent chemosensor for Zn²⁺ in mixed aqueous media. It exhibited high affinity toward Zn²⁺, and the monomer and excimer emission of the pyrene
Ikejiri, Yusuke   +7 more
core   +2 more sources

Chemosensors Comes of Age [PDF]

open access: yesChemosensors, 2021
It has now been just over eight years since I had the pleasure of introducing Chemosensors to the world [...]
openaire   +2 more sources

Optical and Electrochemical Selective Sensor for Zn2+ ions based on 4-(furan-2-ylmethyleneamino)-2,3-dimethyl-1-phenyl-1,2-dihydropyrazol-5-one

open access: yesInternational Journal of Electrochemical Science, 2016
A simple 4-(furan-2-ylmethyleneamino)-2,3-dimethyl-1-phenyl-1,2-dihydropyrazol-5-one (M1) chemosensor was designed and positively applied for the selective recognition of Zn2+ ions in methanol.
Vinod Kumar Gupta
doaj   +1 more source

An NIR Emissive Donor-π-Acceptor Dicyanomethylene-4H-Pyran Derivative as a Fluorescent Chemosensor System towards Copper (II) Detection

open access: yesChemosensors, 2022
A novel donor-π-acceptor fluorescent dye as a chemosensor for Cu2+ ions is herein presented. The fluorophoric core consists of a 3,5-diphenyl-dicyanomethylene-4H-pyran (DCM), with extended styryl chains on positions 2 and 6, bearing terminal di-(2 ...
Agata Karkosik, Artur J. Moro
doaj   +1 more source

A uracil nitroso amine based colorimetric sensor for the detection of Cu²⁺ ions from aqueous environment and its practical applications [PDF]

open access: yes, 2015
A simple uracil nitroso amine based colorimetric chemosensor (UNA-1) has been synthesized and screened for its cation recognition ability. Sensor UNA-1 exhibited a high sensitivity and selectivity towards Cu²⁺ ions in aqueous medium in the presence of a ...
Chen, Lingxin   +10 more
core   +2 more sources

Rapid Detection of Cd2+ Ions in the Aqueous Medium Using a Highly Sensitive and Selective Turn-On Fluorescent Chemosensor

open access: yesMolecules, 2023
Herein, a novel optical chemosensor, (CM1 = 2, 6-di((E)-benzylidene)-4-methylcyclohexan-1-one), was designed/synthesized and characterized by 1H-NMR and FT-IR spectroscopy.
Maria Sadia   +7 more
doaj   +1 more source

Synthesis of a ditopic homooxacalix[3]arene for fluorescence enhanced detection of heavy and transition metal ions [PDF]

open access: yes, 2015
A pyrene-appended ratiometric fluorescent chemosensor L based on a synthetic approach of insulating the fluorophore from the ionophore by a specific molecular spacer has been synthesised and characterised.
Jin, Cheng-Cheng   +5 more
core   +3 more sources

Synthesis of Symmetrical Acetophenone Azine Derivatives as Colorimetric and Fluorescent Cyanide Chemosensors

open access: yesIndonesian Journal of Chemistry, 2021
Cyanide is a highly toxic anion and poison to the environment. Therefore, fast, effective, and efficient analysis methods to detect cyanide are needed. Herein, symmetrical chemosensor of 2’-hydroxy acetophenone azine (1) and 2’,4’-dihydroxy acetophenone ...
Nur Masyittah Irmi   +2 more
doaj   +1 more source

Direct evidence of a blocking heavy atom effect on the water-assisted fluorescence enhancement detection of Hg²⁺ based on a ratiometric chemosensor [PDF]

open access: yes, 2014
At the current stage of chemosensor chemistry, the critical question now is whether the heavy atom effect caused by HTM ions can be blocked or avoided. In the present work, we provide unequivocal evidence to confirm that the heavy atom effect of Hg²⁺ is ...
Ni, Xin-Long   +3 more
core   +2 more sources

A luminescent pyrene-valine conjugates for the detection of copper (II) ions in aqueous media

open access: yesMaterials Letters: X, 2023
A novel pyrene-based fluorescent chemosensor (pyren-1-ylmethyl)-L-valine (1) has been synthesized. 1 is a highly selective chemosensor for detecting Cu(II) ions through fluorescence quenching over other competitive metal ions and showing aqueous-organic ...
Kamlesh Kumar Nigam   +3 more
doaj   +1 more source

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