Cucurbit[6]uril/PVC-based semipermeable membranes as electrode modifiers for electrochemical investigation of insoluble substrates

Correia, Henrique Dias; Demets, Grégoire Jean-François

doi:10.1016/j.elecom.2009.08.018

Cited by 22 publications

(17 citation statements)

References 6 publications

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“…CB[ n ]s are also not toxic, cheap and resistant to microorganisms, which makes them excellent candidates to replace cyclodextrins for most applications. Our own contribution to this field includes the stabilization of reactive species and drug carriers, and the use of CB[ n ] as structural elements in hybrid composites, as templates for nanoparticle synthesis, or to develop special catalysts and coatings, sensors and specialty polymers . Their ability to host a wide range of substrates is mainly due to the hydrophobicity of the inner cavity lacking hydrogen bond donor/acceptor moieties.…”

Section: Soluble Supramolecular Assembliesmentioning

confidence: 99%

Dynamic supramolecular polymers built from cucurbit[n]urils and viologens

Correia

Chowdhury

Ramos

et al. 2018

Polymer International

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This review article focuses on supramolecular assemblies involving cucurbit[n]uril‐based containers and viologen guests as key building elements. Cucurbit[n]urils (CB[n], n = 5–8,10) are fascinating hosts forming a wide range of inclusion complexes (caviplexes) with 4,4′‐bipyridinium salts, known as viologens, either as discrete 1:1 inclusion compounds with CB[7] or as ternary inclusion compounds involving two hosts or two guests (2:1 with CB[7] and 1:2 or 1:1:1 with CB[8]). This property is currently being actively exploited to design and prepare self‐assembled dynamic stimuli‐responsive supramolecular polymers including gels, vesicles, films and organized arrays of polymeric microspheres or nanoparticles. This review highlights the main benefits of such polymers and gives an overview of the achievements and progress made in this field over the past decades. © 2018 Society of Chemical Industry

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Section: Soluble Supramolecular Assembliesmentioning

confidence: 99%

Dynamic supramolecular polymers built from cucurbit[n]urils and viologens

Correia

Chowdhury

Ramos

et al. 2018

Polymer International

Self Cite

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“…The ability of cucurbiturils to form inclusion complexes have been subject to few hundred papers. The ability of these macromolecules to encapsulate gases by the smaller sized CB [5], alkyl chains by the CB [6], aromatic compounds by the CB [7], and more than one molecule by the larger CB [8] justified a recent review [5].…”

Section: Introductionmentioning

confidence: 99%

Use of Cucurbit[6]uril as Ionophore in Ion Selective Electrodes for Etilefrine Determination in Pharmaceuticals

2019

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Cucurbiturils are macrocyclic molecules and have been used with promising results in the development of electrochemical sensors and biosensors due to their main properties such as shape, selectivity, binding interactions and solubility. However, its application for the development of ion selective electrodes has been scarce. In this work, cucurbit[6]uril was used as molecular‐recognition compound for etilefrine sensing membrane with potentiometric transduction. The etilefrine selective electrode was evaluated and proposed as an alternative methodology for pharmaceutical quality control. Different membranes composition were evaluated, considering the use of different solvent mediators and the presence of anionic additives. The best membrane comprises 9.24 mmol.Kg−1 of cucurbit[6]uril, 68.90 % (w/w) of dibutylsebacate and 30.18 % (w/w) of carboxylated polyvinyl chloride. The electrode exhibited selective cationic response toward the etilefrine in a concentration interval of more than four decades, with an slope of 57.4±0.5 mV dec−1, a practical detection limit of (8±1)×10−7 mol L−1 and a low limit of linear range of (1.25±0.28)×10−6 mol L−1. The selectivity of the electrode towards different interfering was high. A comparative evaluation of the accuracy and precision of both procedures was done using the t‐student test (t4,12=1.135) and the Fischer test (F12,4=2.42) and compared with the tabulated ones (t4,12=1.135, F11,3=5.91) for the level of confidence of 95 %.

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“…Moreover, employing the binding properties of Q[n]s to guests provides a powerful tool to functionalize the surfaces of different marterials [4][5][6], especially the development of different electrode surfaces modified with Q[n]s, such as Q [6]/ polyvinyl chloride modified FTO (Fluorine-doped Tin Oxide) glass electrode [7], Q [8] modified glassy carbon electrode [8], graphene/Q[n]s modified electrode [9]. Presently, glassy carbon electrode are always considered as the sustainment modified by Q[n]s for analytical purposes, which is still in the preliminary stages The amazing properties of modified carbon paste electrodes with macrocyclic compounds such as cyclodextrin or calixarene, which are functionalized facilely by kinds of special groups to improve the sensitivity and selectivity [10][11][12][13], prompts us to attempt the modification of carbon paste electrode with Q[n].…”

Section: Introductionmentioning

confidence: 99%

Modification of carbon paste electrode with cucurbit[8]uril and its recognition to phenols

Cong

Geng

et al. 2015

J Incl Phenom Macrocycl Chem

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Electrochemical response of a carbon paste electrodes modified by cucurbit[8]uril (Q[8]) has been described. The electrochemical characterization of Q[8]-modified electrode (Q[8]MCPE) by using cyclic voltammetry exhibits the recognition to phenols. For two series of substrates, o-, m-, p-hydroxybenzyl alcohol and o-, m-, pmethoxyphenol, the special response depends on the structures of substrates, the modification with macrocyclic compound Q[8] always favors m-substituted phenols. Graphical Abstract The electrochemical response of a cucurbit[8]uril-modified carbon paste electrodes to phenols has been described. on bare electrode 60 40 20 0 omSubstituted phenol p-

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Cucurbit[6]uril/PVC-based semipermeable membranes as electrode modifiers for electrochemical investigation of insoluble substrates

Cited by 22 publications

References 6 publications

Dynamic supramolecular polymers built from cucurbit[n]urils and viologens

Dynamic supramolecular polymers built from cucurbit[n]urils and viologens

Use of Cucurbit[6]uril as Ionophore in Ion Selective Electrodes for Etilefrine Determination in Pharmaceuticals

Modification of carbon paste electrode with cucurbit[8]uril and its recognition to phenols

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