Characterization of 1,3-alternate calix[4]arene-silica bonded stationary phases and their comparison to selected commercial columns by using principal component analysis

Śliwka-Kaszyńska, Magdalena; Gorczyca, Grzegorz; Ślebioda, Marek

doi:10.1016/j.chroma.2009.11.052

Cited by 24 publications

(17 citation statements)

References 29 publications

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“…With increasing electron deficiency in the phenyl rings as a consequence of the presence of electron-withdrawing groups like Cl, NO 2 and F, the aromatic selectivity parameters increased. As a general behavior, hydrophobic retention capacity of the studied stationary phases was found to be lower than that of C18 [70]. In another study of the same research group, retention behavior of some polyaromatic hydrocarbons was studied on some of the above mentioned 1,3-alternate calix [4]arene-silica bonded stationary phases.…”

Section: High Performance Liquid Chromatographymentioning

confidence: 93%

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Calixarene-engineered surfaces and separation science

Gezici

Bayrakcı

2015

J Incl Phenom Macrocycl Chem

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After their discovery, calixarenes have attracted the attention of many researchers from various disciplines. This group of supramolecules has an increasing popularity and this is most probably related with the flexibility of calixarene chemistry. Owing to their multifunctional character and stability, calixarenes became important precursors in separation science to derive new-type of sorbents or stationary phases. Immobilization of calixarenes to a suitable solid support (e.g. silica, synthetic polymers, magnetite nanoparticles, etc.) is a very popular concept being used for this purpose, and various immobilization methodologies have been proposed in the literature. In the present work, some state-of-the-art researches and developments published in the past are reviewed in a collective manner, and thus fundamentals of calixareneimmobilization and the application of the obtained materials in sorption and high performance liquid chromatography are represented.

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Section: High Performance Liquid Chromatographymentioning

confidence: 93%

“…The results, again, emphasized the importance of the chemistry of the functionalities on the studied calixarene. However, it is difficult to relate the retention behavior of the studied analyte on the studied calixarenebonded stationary phases with a unique interaction mechanism [70].…”

Section: High Performance Liquid Chromatographymentioning

confidence: 99%

Calixarene-engineered surfaces and separation science

Gezici

Bayrakcı

2015

J Incl Phenom Macrocycl Chem

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“…They showed that naphthylamines and naphthols gave comparatively weaker retention on the ODS than on the calixarene columns. This means that there were additional interactions with the exception of the hydrophobic Sliwka-Kaszynska et al [127] used six aspects, including surface coverage, hydrophobic selectivity, aromatic selectivity, shape selectivity, hydrogen bonding capacity and ion-exchange capacity, to study 12 calix [4]arene stationary phases (Fig. 8), which had been synthesized before by them.…”

Section: Lc Stationary Phases For Molecular Recognitionmentioning

confidence: 99%

“…The calixarene phases had significant differences in hydrogen bonding capacities, which did not correspond to the degree of their surface coverage. CalixBn, CalixBzF 5 , CalixBph and CalixBnOMe columns exhibited the highest total silanol activity among calixarene phases [127].…”

Section: Lc Stationary Phases For Molecular Recognitionmentioning

confidence: 99%

“…From[127], copyright 2010aren as well as a resorcinarene-bonded phase (Caltrex resorcinaren). They showed the influence of methanol content for non-polar, polar and ionic solutes and differences in their behavior on the differing column types.Liu et al[129] prepared four bonded silica stationary phases including chloropropyl bonded silica (CPS), p-tertbutyl-calix[8]arene bonded silica (CBS), b-cyclodextrin bonded silica (b-CD-BS) and ODS and applied them to separate steroid hormone medicines.…”

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Applications of Nano-Baskets of Calixarenes in Chromatography

2011

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Nano-baskets of calixarenes have been subject to extensive research in the construction of liquid chromatographic phases, extractants, transporters, electrode ionophores, and optical and electrochemical sensors over the past 4 decades. There has long been interest in calixarene-based liquid chromatographic phases. Owing to the recent rapid growth in the number of publications on calixarene-based liquid chromatographic phases, this review paper focuses on their different applications in the main fields of molecular and ionic species as well as liquid chromatographic mobile and stationary phases. Although the recent reports have focused on the optimization and application of one kind or a unique group of calixarenic mobile or stationary phases, this review is a collection and comparison of a variety of research data dealing with the synthesis, preparation and behavior of calixarene-based liquid chromatographic phases.

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Contrast in Electron‐Transfer Mediation between Graphene Oxide and Reduced Graphene Oxide

et al. 2012

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The properties of graphene oxide (GO) and DNA-stabilised reduced graphene-oxide (rGO) sheets as electron-transfer mediators in partially blocked electrodes are evaluated employing electrochemical impedance spectroscopy. Evidences obtained from UV/Vis, Raman and FTIR spectroscopies, as well as atomic force microscopy, confirm that the reduction of exfoliated GO single sheets by hydrazine yields partially reduced graphene oxide featuring a high defect density. Two-dimensional assemblies of GO and rGO were formed through electrostatic adsorption at Au electrodes, sequentially modified with 11-mercaptoundecanoic acid (MUA) and poly-diallyldimethylammonium chloride (PDADMAC). The MUA:PDADMAC generates a strong blocking layer to the electron-transfer reaction involving the ferri/ferrocyanide redox couple. This blocking behaviour is not significantly affected upon adsorption of GO. However, adsorption of a sub-monolayer of rGO decreases the charge-transfer resistance by more than two orders of magnitude. Analysis of cyclic voltammograms and impedance spectra suggests that electron transfer in rGO assemblies is mediated by occupied states located just below the redox Fermi energy of the probe. These findings are discussed in the context of on-going controversies regarding the electrochemical reactivity of sp(2)-carbon basal planes.

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Characterization of 1,3-alternate calix[4]arene-silica bonded stationary phases and their comparison to selected commercial columns by using principal component analysis

Cited by 24 publications

References 29 publications

Calixarene-engineered surfaces and separation science

Calixarene-engineered surfaces and separation science

Applications of Nano-Baskets of Calixarenes in Chromatography

Contrast in Electron‐Transfer Mediation between Graphene Oxide and Reduced Graphene Oxide

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