Crown-Ether Derived Graphene Hybrid Composite for Membrane-Free Potentiometric Sensing of Alkali Metal Ions

Olsen, Gunnar; Ulstrup, Jens; Chi, Qijin

doi:10.1021/acsami.5b11597

Cited by 52 publications

(20 citation statements)

References 29 publications

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“…Since the seminal work of the Nobel Prize winner Petersen showing that crown ethers form strong supramolecular complexes with alkali metal ions and that the high stability of these supramolecular ions can be used to modify the properties of alkali metal salts, including their solubility in organic solvents, this type of supramolecular entities have been widely used in different fields, including the development of responsive molecules, sensors and electroresponsive materials . Not surprisingly, Gs have also been modified by azacrown ethers to allow their binding with alkali metal ions . Specifically, 1‐aza‐18‐crown‐6 was attached through the N atom to GO by reaction of GO and the parent azacrown in water at 100 °C under basic conditions (Scheme ) .…”

Section: Photoinduced Electron/energy Transfer Processes Using Organimentioning

confidence: 99%

Covalently Modified Graphenes in Catalysis, Electrocatalysis and Photoresponsive Materials

Navalón

Herance

Álvaro

et al. 2017

Chemistry A European J

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The ideal graphene is a one-atom thick single layer of carbon atoms having sp hybridation in hexagonal arrangement. Due to their large surface area and good dispersability in common solvents, graphenes are suitable platforms to anchor covalently units. The appended unit can introduce additional functionality to graphene. Although the field of covalently modified graphene is still starting compared to the development of other carbon nanoforms, there is already many examples describing the use of modified graphenes as recoverable photo-, electrocatalysts as well as in non-linear optics and to improve mechanical resistance and solubility of graphenes. In this Review, the state of the art of covalently modified graphenes for these applications is reviewed. After some general sections describing properties and characterization techniques of graphenes relevant to their use as supports and those general reactions and starting substrates to obtain the modified graphene conjugates, the main body of the review describes the preparation and properties of covalently modified graphene depending on their use as catalyst, photocatalyst, photoresponsive material, non-linear optics, electrocatalyst and other uses. The last section of the review summarizes the main achievements of the field and what should be according to our view the future developments.

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Section: Photoinduced Electron/energy Transfer Processes Using Organimentioning

confidence: 99%

Covalently Modified Graphenes in Catalysis, Electrocatalysis and Photoresponsive Materials

Navalón

Herance

Álvaro

et al. 2017

Chemistry A European J

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“…Potassium and sodium ions are most commonly assayed by clinical laboratories. DC provides highly selective binding to potassium ions, because the 18-crown [6]ether cavity matches the size of potassium ions specifically as well as provides ion−dipole interaction with potassium ions [5]. A new class of ionophores, calixarenes, was introduced after 1990s.…”

Section: Construction Of Surface Relief Hologramsmentioning

confidence: 99%

“…Interrogation of these structures by light allows indirect measurements of chemical analytes' concentration in real time. These two ionophores have been previously widely used in the fabrication of ion selective electrode for potentiometric measurements [5][6] [7].…”

Section: Introductionmentioning

confidence: 99%

Development of sensitive holographic devices for physiological metal ion detection

Gul¹,

Martin²,

Cassidy³

et al. 2017

Nanoengineering: Fabrication, Properties, Optics, and Devices XIV

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The development of selective alkali metal ions sensors in particular is a subject of significant interest. In this respect, the level of blood electrolytes, particularly H + , Na + , K + and Cl -, is widely used to monitor aberrant physiologies associated with pulmonary emphysema, acute and chronic renal failure, heart failure, diabetes. The sensors reported in this paper are created by holographic recording of surface relief structures in a self-processing photopolymer material. The structures are functionalized by ionophores dibenzo-18-crown-6 (DC) and tetraethyl 4-tert-butylcalix[4]arene (TBC) in plasticised polyvinyl chloride (PVC) matrix. Interrogation of these structures by light allows indirect measurements of chemical analytes' concentration in real time. We present results on the optimisation and testing of the holographic sensor. A self-processing acrylamide-based photopolymer was used to fabricate the required photonic structures. The performance of the sensors for detection of K + and Na + was investigated. It was observed that the functionalisation with DC provides a selective response of the devices to K + over Na + and TBC coated surface structures are selectively sensitive to Na + . The sensor responds to Na + within the physiological ranges. Normal levels of Na + and K + in human serum lie within the ranges 135-148mM and 3.5-5.3 mM respectively.

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“…In particular, crown ethers, which are composed of cyclic ethyleneglycol ((OCH 2 CH 2 ) n ), have selective binding ability with alkali metal ions, heavy metal ions and rare earth metal ions which possess similar size with the ring of them, due to their unique chemical structure. So, numerous applications are brought to crown ethers, such as ion‐selectivity sensors, phase transfer catalyst, and ion adsorption …”

Section: Introductionmentioning

confidence: 99%

Simultaneous adsorption of Li(I) and Rb(I) by dual crown ethers modified magnetic ion imprinting polymers

et al. 2019

Applied Organom Chemis

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With the gradual exhaustion of land mineral resources, oceans and lakes have attracted world attention because they are abundant in inorganic mineral resources including lithium, potassium, rubidium and cesium. Lithium is becoming the key material in manufacturing of primary and secondary batteries used in various portable devices and hybrid/electric vehicles. Rubidium has been widely applied inglobal positioning satellites, magneto‐optic modulators, solid‐state lasers, phosphors, and glass manufacturing. In this work, a novel dual‐functional magnetic ion imprinting polymer (Fe3O4@SiO2@IIPs) powder was prepared using 12‐crown‐4 (12C4) and 18‐crown‐6 (18C6) as functional monomer, and characterized by FT‐IR, elemental analysis, XRD, TGA, SEM and TEM. The adsorption performance of Fe3O4@SiO2@IIPs for simultaneous adsorption of lithium and rubidium from simulative salt lakes was evaluated by batches of experiments at various pH values, contact time, and initial concentrations. Kinetic experiments show that the adsorption process followed the pseudo second order kinetic model. Langmuir adsorption isotherm model and Freundlich adsorption equilibrium data were fitted; the results show that Langmuir isotherm model is more suitable for the adsorption process. Additionally, Fe3O4@SiO2@IIPs exhibit specificity towards Li(I) and Rb(I) and low competitive behavior with Na(I), K(I) and Mg (II). Additionally, the selectivity properties, reusability and adsorption thermodynamic were also investigated. The obtained results show that the prepared Fe3O4@SiO2@IIPs material remains high adsorption capacities after five cycles, exhibits excellent abilities to simultaneously and selectively recover Li+ and Rb+ and have a promising application in the simultaneous adsorption of lithium and rubidium ions.

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Crown-Ether Derived Graphene Hybrid Composite for Membrane-Free Potentiometric Sensing of Alkali Metal Ions

Cited by 52 publications

References 29 publications

Covalently Modified Graphenes in Catalysis, Electrocatalysis and Photoresponsive Materials

Covalently Modified Graphenes in Catalysis, Electrocatalysis and Photoresponsive Materials

Development of sensitive holographic devices for physiological metal ion detection

Simultaneous adsorption of Li(I) and Rb(I) by dual crown ethers modified magnetic ion imprinting polymers

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