Hexasulfonated calix[6]arene derivatives:  a new class of catalysts, surfactants, and host molecules

Shinkai, Seiji; Mori, Seiichi; Koreishi, Hiroshi; Tsubaki, Takayuki; Manabe, Osamu

doi:10.1021/ja00269a045

Cited by 461 publications

(301 citation statements)

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“…Synthesis and film preparation of calix [4]arene derivative: calix [4]arene derivative was synthesized according to previously published procedure and molecular structure is given in Fig. 1 1 mg/ml calix [4]arene was dissolved in de-ionized water and 5 l of solution was drop casted on to quartz crystal.…”

Section: Methodsmentioning

confidence: 99%

“…Hence the frequency shift is directly proportional to the adsorbed mass on the calix [4]arene modified gold QCM electrodes. In this study humidity sensing properties of calix [4]arene films coated onto QCM gold electrodes were investigated. The change of resonance frequency of QCM was monitored with increasing relative humidity (RH) from 29% up to 80%.…”

Section: Introductionmentioning

confidence: 99%

“…Calixarenes are generally soluble in organic solvents; however water soluble ones are also synthesized and reported by many authors. Several derivatives of water soluble calixarenes were synthesized and used in many applications [3][4][5][6][7][8]. Thin films of calixarenes have been widely used in chemical sensors.…”

Section: Introductionmentioning

confidence: 99%

“…The change of resonance frequency of QCM was monitored with increasing relative humidity (RH) from 29% up to 80%. Calix [4] sitive to water molecules. The adsorption and desorption kinetic parameters determined by using Langmuir model show that the calix [4]arene films have strong affinity to water vapor between 29% and 80% relative humidity.…”

Section: Introductionmentioning

confidence: 99%

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confidence: 99%

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Humidity adsorption kinetics of water soluble calix[4]arene derivatives measured using QCM technique

Okur

Kuş

Özel

2010

Sensors and Actuators B: Chemical

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a b s t r a c tWe report on the optimization and characterization of water soluble calix [4]arene derivative as a humidity sensor based on quartz crystal microbalance technique. The moisture adsorption and desorption kinetics of calix[4]arene were investigated. The Langmuir model was used to determine the kinetic parameters such as adsorption, desorption rates and Gibbs free energy between relative humidity between 29% and 78%. Reproducible experimental results were obtained showing that water soluble calix[4]arene films have a great potential for humidity sensing applications at room temperature operations.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…

…”

mentioning

confidence: 99%

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Humidity adsorption kinetics of water soluble calix[4]arene derivatives measured using QCM technique

Okur

Kuş

Özel

2010

Sensors and Actuators B: Chemical

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Characterization of Three-Dimensionally Extended Hydrophobic Cavities. Difference in Molecular Recognition Ability Between Steroid and Octopus Cyclophanes

Kikuchi¹,

Inada²,

Murakami³

et al. 1997

J. Phys. Org. Chem.

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The guest-binding behavior of two different cyclophane hosts, each being capable of providing a three-dimensionally extended hydrophobic cavity toward aromatic guests, was examined in aqueous media: a steroid cyclophane bearing four rigid cholate moieties and an octopus cyclophane having four flexible double-chain segments. Even though the binding constant for 2,7-dihydroxynaphthalene with the steroid cyclophane was comparable to that with the octopus cyclophane, the guest binding modes were very different from each other, as confirmed by 1 H NMR spectroscopy. That is, the steroid cyclophane incorporates the guest into its rigid macrocyclic cavity with axial geometry whereas the octopus cyclophane provides a three-dimensional space created by the macrocyclic skeleton and the flexible hydrocarbon chains so that the long axis of the guest becomes more or less perpendicular to the molecular axis of the host upon complexation. Temperature-dependent molecular recognition by these hosts toward 8-anilinonaphthalene-1-sulfonate was examined by means of fluorescence spectroscopy. Characteristic differences in the guest-binding mode between these hosts were sensitively reflected in the thermodynamic entropy change on host-guest complexation and the temperature-dependent microscopic viscosity experienced by the guest at the binding site. ©

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An EPR Investigation of the Kinetics of Inclusion of a Persistent Radical in Water-Soluble Calix[4]arenes

Franchi

Lucarini²,

Pedulli³

et al. 2000

Angewandte Chemie

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A voluminous literature reporting the synthesis and characterization of calixarenes behaving as highly selective receptors for metal cations and organic guest molecules has appeared during the last twenty years [1] . These calixarenes are Figure 3. The HOMO and LUMO obtained from our density functional theory calculations, together with simple orbital correlations showing the direct formation of the diradical species. The correlation is with respect to the molecular plane of symmetry. Note that in the optimized geometry calculation of the HOMO and LUMO, this restriction is relaxed as the geometry is not planar.

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Hexasulfonated calix[6]arene derivatives: a new class of catalysts, surfactants, and host molecules

Cited by 461 publications

References 0 publications

Humidity adsorption kinetics of water soluble calix[4]arene derivatives measured using QCM technique

Humidity adsorption kinetics of water soluble calix[4]arene derivatives measured using QCM technique

Characterization of Three-Dimensionally Extended Hydrophobic Cavities. Difference in Molecular Recognition Ability Between Steroid and Octopus Cyclophanes

An EPR Investigation of the Kinetics of Inclusion of a Persistent Radical in Water-Soluble Calix[4]arenes

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