Cu2+ fluorescent sensor based on mesoporous silica nanosphere

Lu, Deli; Lei, Juying; Tian, Zhidan; Wang, Lingzhi; Zhang, Jinlong

doi:10.1016/j.dyepig.2012.01.004

Cited by 33 publications

(26 citation statements)

References 31 publications

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“…ANC derivatives (ANC‐1 and ANC‐2) decorated MSNs (MSNs‐ANC‐1 and MSNs‐ANC‐2) were reported by Chatterjee et al and Lu et al, respectively, for environmental and biological uses. Cubic MSN‐based excimer fluorescence probe, i.e., MSNs‐ANC‐1, was applied for selective and sensitive detection of Cu 2+ and Hg 2+ in various real food samples and living organism such as the brine shrimp Artemia salina.…”

Section: Sio2‐based Hybrid Materialsmentioning

confidence: 99%

Design of Multifunctional Fluorescent Hybrid Materials Based on SiO₂ Materials and Core–Shell Fe₃O₄@SiO₂ Nanoparticles for Metal Ion Sensing

Chatterjee

Liang

et al. 2019

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Hybrid fluorescent materials constructed from organic chelating fluorescent probes and inorganic solid supports by covalent interactions are a special type of hybrid sensing platform that has gained much interest in the context of metal ion sensing applications owing to their excellent advantages, recyclability, and solubility/dispersibility in particular, as compared with single organic fluorescent molecules. In recent decades, SiO2 materials and core–shell Fe3O4@SiO2 nanoparticles have become important inorganic solid materials and have been used as inorganic solid supports to hybridize with organic fluorescent receptors, resulting in multifunctional fluorescent hybrid systems for potential applications in sensing and related research fields. Therefore, recent progress in various fluorescent‐group‐functionalized SiO2 materials is reviewed, with a focus on mesoporous silica nanoparticles and core–shell Fe3O4@SiO2 nanoparticles, as interesting fluorescent organic–inorganic hybrid materials for sensing applications toward essential and toxic metal ions. Selective examples of other types of silica/silicon materials, such as periodic mesoporous organosilicas, solid SiO2 nanoparticles, fibrous silica spheres, silica nanowires, silica nanotubes, and silica hollow microspheres, are also mentioned. Finally, relevant perspectives of metal‐ion‐sensing‐oriented silica‐fluorescent probe hybrid materials are provided.

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Section: Sio2‐based Hybrid Materialsmentioning

confidence: 99%

Design of Multifunctional Fluorescent Hybrid Materials Based on SiO₂ Materials and Core–Shell Fe₃O₄@SiO₂ Nanoparticles for Metal Ion Sensing

Chatterjee

Liang

et al. 2019

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“…The first idea to consider RECM as a Cu 2+ sensitive and selective fluorescent and colorimetric chemosensor was based on the spirocycle opening mechanism, which was the same as reported spirocycle rhodamine-based derivatives [5,10,16,24,25,36]. With this consideration, directly linked chelating agents to rhodamine spirolactam moiety including one methylamide N and two carbonyl O atoms made a possible binding pocket of RECM toward Cu 2+ and induced the spirolactam ring opening upon RECM and Cu 2+ binding interaction.…”

Section: Structure and Complexation Mechanismmentioning

confidence: 99%

“…In contrast, absorbance decreases upon addition of more than 45 µM (Figure 5b). The fluorescence and absorbance decreased upon addition of more than 55 µM and 45 µM Cu 2+ respectively, that might be respected to the paramagnetic nature of Cu 2+ [27,36,37]. Paramagnetic square-planar or tetragonally distorted metal ions such as Co 2+ , Cr 3+ , Cu 2+ , Fe 3+ , Ni 2+ , and Pd 2+ are able to quench the fluorescence of optical chemosensors which is presumptively undesirable for analytical purposes [38].…”

Section: Optical Sensing Propertiesmentioning

confidence: 99%

Section: Structure and Complexation Mechanismmentioning

confidence: 99%

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Fluorescence Chemosensory Determination of Cu2+ Using a New Rhodamine–Morpholine Conjugate

et al. 2017

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Abstract:A new rhodamine-B carbonyl-morpholine derivative (denoted as RECM) was prepared by a two-step synthesis procedure. The employed method allowed a lactam ring development of rhodamine-B and ethylenediamine to demonstrate a facile amide bond formation. The obtained RECM was confirmed by 1 H NMR, 13 C NMR, and mass spectrometry analysis. RECM was formed to detect copper ion (Cu 2+ ) due to its problematic toxicity features in aquatic ecosystems. It showed a high selectivity toward Cu 2+ in comparison with some environmentally relevant alkali, alkaline earth, and transition metal cations at 50 µM in acetonitrile. Moreover, non-fluorescent RECM showed fluorescence intensity and UV-Vis absorbance increases in the presence of Cu 2+ with high linear dependent coefficients (R 2 = 0.964 and R 2 = 0.982 respectively) as well as a color change from colorless to pink owing to the ring opening of the rhodamine spirolactam form. Binding capability experiments presented a clear 1:1 stoichiometry of RECM-Cu 2+ complex with the binding constant (K a ) as 2.25 × 10 4 M −1 . The calculation of limits of detection (LOD) was 0.21 µM based on the linear regression method, which is below the maximum contaminant level goal (MCLG) value of Cu 2+ (1.3 ppm equals to 20.46 µM) in drinking water. These characteristics make the RECM a promising candidate for the real-time detection of toxic Cu 2+ in environmental monitoring applications.

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“…However, the most commonly used fluorescence probes have been focused on homogeneous systems in the solution state, which are not recyclable and separable [17,18]. Several previous studies have been devoted to the preparation of solid-state probes formed by grafting small molecules onto nanomaterials, which are promising due to advantages such as reusability, separability, operational simplicity, and portability, which make rapid online detection possible at low cost [19][20][21][22]. Among these solid-state probes, magnetic Electronic supplementary material The online version of this article (doi:10.1007/s00604-014-1358-7) contains supplementary material, which is available to authorized users.…”

Section: Introductionmentioning

confidence: 99%

Calcein-functionalized Fe3O4@SiO2 nanoparticles as a reusable fluorescent nanoprobe for copper(II) ion

Liu

Zang

et al. 2014

Microchim Acta

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Calcein was first covalently grafted onto the surface of magnetic silica nanoparticles to obtain a novel fluorescent nanoprobe for sensitive and selective determination of Cu(II) ion. The nanoparticles were synthesized in a two-step reaction under mild conditions and characterized using small-angle Xray scattering, Fourier transform infrared spectroscopy, transmission electron microscopy, and thermogravimetric analysis. The nanoprobe also displays good selectivity over other metal ions and is highly stable under conditions of high ionic strength. The response to Cu(II) ranges from 80 nM to 1.25 μM. The detection limit (LOD) is 43 nM which is lower than previously reported LODs. The probe can be regenerated by adding the complexing agent EDTA and also can be separated from a sample mixture by applying a magnetic field. We conclude that this method represents a new and convenient approach to the development of magnetic and reusable optical probes.

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Cu2+ fluorescent sensor based on mesoporous silica nanosphere

Cited by 33 publications

References 31 publications

Design of Multifunctional Fluorescent Hybrid Materials Based on SiO₂ Materials and Core–Shell Fe₃O₄@SiO₂ Nanoparticles for Metal Ion Sensing

Design of Multifunctional Fluorescent Hybrid Materials Based on SiO₂ Materials and Core–Shell Fe₃O₄@SiO₂ Nanoparticles for Metal Ion Sensing

Fluorescence Chemosensory Determination of Cu2+ Using a New Rhodamine–Morpholine Conjugate

Calcein-functionalized Fe3O4@SiO2 nanoparticles as a reusable fluorescent nanoprobe for copper(II) ion

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Cu2+ fluorescent sensor based on mesoporous silica nanosphere

Cited by 33 publications

References 31 publications

Design of Multifunctional Fluorescent Hybrid Materials Based on SiO2 Materials and Core–Shell Fe3O4@SiO2 Nanoparticles for Metal Ion Sensing

Design of Multifunctional Fluorescent Hybrid Materials Based on SiO2 Materials and Core–Shell Fe3O4@SiO2 Nanoparticles for Metal Ion Sensing

Fluorescence Chemosensory Determination of Cu2+ Using a New Rhodamine–Morpholine Conjugate

Calcein-functionalized Fe3O4@SiO2 nanoparticles as a reusable fluorescent nanoprobe for copper(II) ion

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Design of Multifunctional Fluorescent Hybrid Materials Based on SiO₂ Materials and Core–Shell Fe₃O₄@SiO₂ Nanoparticles for Metal Ion Sensing

Design of Multifunctional Fluorescent Hybrid Materials Based on SiO₂ Materials and Core–Shell Fe₃O₄@SiO₂ Nanoparticles for Metal Ion Sensing