Sensing parts per million levels of gaseous NO2 by a optical fiber transducer based on calix[4]arenes

Ohira, Shin Ichi; Wanigasekara, Eranda; Rudkevich, Dmitry M.; Dasgupta, Purnendu Κ.

doi:10.1016/j.talanta.2008.10.024

Cited by 48 publications

(47 citation statements)

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“…Due to their zeolite-like capacity and selectivity, calixarenes became promising materials for sensor applications. The functional groups at the upper and lower rims determine their selectivity in host-guest interactions and physical properties [9][10]. These materials are also used in gas or organic solvent vapor sensors [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

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: Introductionmentioning

confidence: 99%

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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“…Synthesis and film preparation of sulphonated calix [4]arene Suphonated calix [4]arene was synthesized according to previously published procedure [2][3][4][5][6][7][8][9][10][11][12]14]. Molecular structure of calix [4]arene derivative is given in Fig.…”

Section: Methodsmentioning

confidence: 99%

“…The QCM works with oscillation frequencies between 7.995 MHz and 7.950 MHz. The density ( ) of the crystal is 2.684 g/cm 3 , and the shear modulus ( ) of quartz is 2.947 × 10 11 g/cm s 2 . Around oscillation frequency of 7.995 MHz, a net change of 1 Hz corresponds to 1.34 ng of materials adsorbed or desorbed onto the crystal surface of an area of 0.196 cm 2 .…”

Section: Humidity Measurement Techniquementioning

confidence: 99%

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

Okur

Kuş

Özel

et al. 2010

Talanta

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a b s t r a c tThis study focuses on the characterization of sulphonated calix[4]arene derivative films coated on a quartz substrate with a thickness of 40 nm by spin coating method for humidity detection. The humidity adsorption kinetics of the sulphonated calix[4]arene films was investigated by quartz crystal microbalance (QCM) technique. The Langmuir model was used to determine the adsorption rates and Gibbs free energy for various relative humidities between 11% and 97%. Our reproducible experimental results show that suphonated calix[4]arene films have a great potential for humidity sensing applications at room temperature operations.

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“…Among the different organic reactions involving NO 2 we decided to explore the utility of the generation of aromatic aldehydes from trimethylsilyl benzyl ethers 15 and oximes 16 in order to prepare suitable chemodosimeters for the detection of this poisonous and pollutant gas. These are reactions with quantitative yields, working at room temperature and at ambient pressure.…”

mentioning

confidence: 99%

Biphenyl derivatives containing trimethylsilyl benzyl ether or oxime groups as probes for NO₂detection

et al. 2016

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Four probes based in the use of a biphenyl moiety and functionalized with trimethylsilyl benzyl ether (P1 and P3) and oxime (P2 and P4) groups have been prepared and tested as optical probes for the detection of NO 2 .Reaction of NO 2 with acetonitrile solutions of P2-P4 resulted in the formation of aldehydes 7 and 8 with a concomitant redshift of the absorption bands. Probe P2 displayed a bathochromic shift of 45 nm upon reaction with NO 2 and was able to detect this poisonous gas at concentrations as low as 0.02 ppm. P2 was highly selective against NO 2 and other gases (i.e. NO, CO 2 , H 2 S, SO 2 ) and vapours of organic solvents (i.e. acetone, hexane, chloroform, acetonitrile or toluene) had no effect in the optical properties of the probe.

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Sensing parts per million levels of gaseous NO2 by a optical fiber transducer based on calix[4]arenes

Cited by 48 publications

References 47 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

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

Biphenyl derivatives containing trimethylsilyl benzyl ether or oxime groups as probes for NO₂detection

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Sensing parts per million levels of gaseous NO2 by a optical fiber transducer based on calix[4]arenes

Cited by 48 publications

References 47 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

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

Biphenyl derivatives containing trimethylsilyl benzyl ether or oxime groups as probes for NO2detection

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Biphenyl derivatives containing trimethylsilyl benzyl ether or oxime groups as probes for NO₂detection