Cd2+-sensiting bichromophore: Excimer emission from an EDTA-methylnaphthalene derivative

Machi, Lorena; Santacruz‐Ortega, Hisila; Sánchez, Mario; Inoue, Motomichi

doi:10.1016/j.inoche.2007.01.015

Cited by 15 publications

(8 citation statements)

References 35 publications

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“…44) for fluorometric detection of Cd 2+ . 98 Compound 62 exhibited both intramolecular excimer emission (400 nm) and monomer emission (335 nm). Addition of Zn 2+ induced formation of a [ZnL] 0 type complex leading to the decrease of the excimer emission but enhancement in the monomer emission.…”

Section: Small Molecule Based Chemosensorsmentioning

confidence: 99%

Fluorescent and colorimetric sensors for detection of lead, cadmium, and mercury ions

et al. 2012

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Exposure to even very low levels of lead, cadmium, and mercury ions is known to cause neurological, reproductive, cardiovascular, and developmental disorders, which are more serious problems for children particularly. Accordingly, great efforts have been devoted to the development of fluorescent and colorimetric sensors, which can selectively detect lead, cadmium, and mercury ions. In this critical review, the fluorescent and colorimetric sensors are classified according to their receptors into several categories, including small molecule based sensors, calixarene based chemosensors, BODIPY based chemosensors, polymer based chemosensors, DNA functionalized sensing systems, protein based sensing systems and nanoparticle based sensing systems (197 references).

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Section: Small Molecule Based Chemosensorsmentioning

confidence: 99%

Fluorescent and colorimetric sensors for detection of lead, cadmium, and mercury ions

et al. 2012

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“…The Fe(III)–O–Fe(III) angle is 150.80(7)°. The crystallographic structures of the ligand edtaodH 2 and its copper complex [Cu(edtaod)]·H 2 O have been reported already . Both metal complexes of this ligand crystallize with the same space group ( Pbca ), but there are major differences in the coordination geometries.…”

Section: Resultsmentioning

confidence: 94%

“…Although the active site of POx contains iron(III) coordination centers, the evaluation of similar biomimetic activities has been reported for other transition metal complexes such as copper(II) complexes, to provide interesting results. , The activity as a biomimetic agent depends, among other factors, on the conformation of the metal–ligand sphere because the oxidation state of the metal is changed during the catalysis . In our research group, we have developed metal complexes with macrocyclic and acyclic receptors derived from EDTA (ethylenediaminetetraacetic acid) with different topologies. − Some of them have coordination modes resembling those found in binuclear metalloproteins. As background of the present work, significant biomimetic capacities of superoxide dismutase and POx (peroxidase) have been found for the binuclear complexes of the EDTA-derived ligands with copper(II) and iron(III), respectively.…”

Section: Introductionmentioning

confidence: 99%

Comparative Studies of Structures and Peroxidase-like Activities of Copper(II) and Iron(III) Complexes with an EDTA-Based Phenylene-Macrocycle and Its Acyclic Analogue

Beltran-Torres¹,

Sugich-Miranda²,

Santacruz‐Ortega³

et al. 2019

ACS Omega

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With the objective of studying the conformational and macrocyclic effects of selected metal chelates on their peroxidase activities, Cu2+ and Fe3+ complexes were synthesized with a macrocyclic derivative of ethylenediaminetetraacetic acid and o-phenylenediamine (abbreviated as edtaodH2) and its new open-chain analogue (edtabzH2). The Fe3+ complex of edtaodH2 has a peroxidase-like activity, whereas the complex of edtabzH2 does not. The X-ray study of the former shows the formation of a dimeric molecule {[Fe(edtaod)]2O} in which each metal with an octahedral coordination is overposed over the macrocyclic cavity, as a result of rigid macrocyclic frame, to form an Fe–O–Fe bridge; the exposure of the central metal to the environment facilitates the capture of oxygen to drive the biomimetic activity. The peroxidase-inactive Fe3+ complex consists of a mononuclear complex ion [Fe(edtabz)(H2O)]+, the metal ion of which is suited in a distorted pentagonal bipyramid to be protected from environmental oxygen. The copper(II) complexes, which have mononuclear structures with high thermodynamic stability compared with the iron(III) complexes, show no peroxidase activity. The steric effects play a fundamental role in the biomimetic activity.

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“…As we know, the recognition capability between molecule themselves should be strongest, so we choose melamine as the antenna moiety to synthesis Eu Ш -dtpa-bis(melamine) [19][20][21]. The interaction of π-π* conjugation between melamine molecules was strongest, so the melamine could be catched by the Eu Ш -dtpa-bis(melamine) complex more easily [22,23], in contrast to other analogues, such as cyanuric acid (Cya), cyanuric chloride (Cyach), trichloro isocyanuric acid (Isocya) and acetoguanamine (Methyla). As the coordination bond of the complex changed, the ligand field around the Eu Ш ion also changed, and then leads to the fluorescence of the probe changed.…”

Section: Introductionmentioning

confidence: 99%

Design and synthesis of a novel lanthanide fluorescent probe (EuIII-dtpa-(bis)melamine) and application in melamine detection in milk products

Jiang

Tian

Yang

et al. 2017

Sensors and Actuators B: Chemical

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highly selective fluorescence "turn-on" response. The competitive assay showed that the presence of other analogues (cyanuric acid, cyanuric chloride, trichloroisocyanuric acid and acetoguanamine) rarely affected the turn-on fluorescence intensity in probing melamine. The obtained results displayed a linear correlation beteewn melamine concentration and fluorescence intensity. The linear equation was y = 38.68x + 568.32 (R 2 = 0.9972) with melamine concentration ranged from 5-100 µmol/L. When melamine concentration reaches 100 µmol/L, the fluorescence intensity becomes the maximum. The formed Eu III-dtpa-bis(melamine)-melamine complex was extremly stable with the stability constant (k) of 9.90 × 10 6 and the complexation ratio was 1:1. The detection limit (LOD) was 0.3743 µmol/L. The recoveries ranged from 99.80 to 100.50 %, when melamine was detected in some milk products. It can be confirmed that Eu III-dtpa-bis(melamine) shows high selectivity, sensitivity, targeting and recognition ability in melamine detection.

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Cd2+-sensiting bichromophore: Excimer emission from an EDTA-methylnaphthalene derivative

Cited by 15 publications

References 35 publications

Fluorescent and colorimetric sensors for detection of lead, cadmium, and mercury ions

Fluorescent and colorimetric sensors for detection of lead, cadmium, and mercury ions

Comparative Studies of Structures and Peroxidase-like Activities of Copper(II) and Iron(III) Complexes with an EDTA-Based Phenylene-Macrocycle and Its Acyclic Analogue

Design and synthesis of a novel lanthanide fluorescent probe (EuIII-dtpa-(bis)melamine) and application in melamine detection in milk products

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