The NO2 gas sensing properties of calixarene/porphyrin mixed LB films

Richardson, T.; Brook, R.A.; Davis, Frank; Hunter, Chris

doi:10.1016/j.colsurfa.2005.11.076

Cited by 37 publications

(21 citation statements)

References 8 publications

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“…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]. Sensor applications of calixarenes have been reported for a few transducer types such as quartz crys-tal microbalances (QCM) [14][15][16] and ISFETs [17].…”

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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“…These sensors reliant on changes in the optical properties of the active sensing material, generally operate at room temperature and remain relatively immune to interference effects 5 . The optical responses toward alcohol vapors of H 2 TPP and its derivatives suggested different molecule organization between spin coated and vacuum evaporation technique thin films 6 .…”

Section: Introductionmentioning

confidence: 99%

Chemsensor of NO2 gas based on porphyrin of 5, 10, 15, 20-tetraphenylporphyrin LB films and LS films

Sales

Mansur

2008

Mat. Res.

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The sensitivity of 5, 10, 15, 20-tetraphenylporphyrin (H 2 TPP) to the presence of NO 2 gas in diluted solutions and in Langmuir-Blodgett (LB) and Langmuir-Schaefer (LS) films was investigated by UV-visible spectroscopy. The shift of Soret and Q bands were analyzed and the energies involved were calculated. The exposure of LB porphyrin films deposited onto glass slides to NO 2 has performed as an active chemsensor with 7000 ppm gas concentration. Furthermore, the UV-vis dichroism absorption results associated with the Soret bands have given evidence of the tilt angle of the macrocycle related to the substrate. H 2 TPP in LB film was tilted by an angle of 51 ± 5° and in the LS film was tilted by an angle of 36° ± 5° indicating the formation of a preferential organization of the molecular films depending on the deposition method.

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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%

“…Calixarenes became promising materials for sensor applications due to functional groups at the upper and lower rims, that determine the selectivity in host-guest interactions and physical properties [3][4]. They have been also used as gas or organic solvent vapour sensors [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

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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The NO2 gas sensing properties of calixarene/porphyrin mixed LB films

Cited by 37 publications

References 8 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

Chemsensor of NO2 gas based on porphyrin of 5, 10, 15, 20-tetraphenylporphyrin LB films and LS films

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

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