Cavitands as selective materials for QMB sensors for nitrobenzene and other aromatic vapours

Nelli, P.; Dalcanale, Enrico; Faglia, Guido; Sberveglieri, G.; Soncini, Paolo

doi:10.1016/0925-4005(93)85386-o

Cited by 59 publications

(35 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Cavitand-coated sensors have been exposed to gas phase vapors and responses have been observed [200][201][202][203][204][205][206][207][208][209][210][211]. In some experiments, the sensors were exposed to brief pulses of vapors, such that steady state responses were not obtained, and the cavitand layer did not come to thermodynamic equilibrium with the gas phase vapor concentration.…”

Section: Materials With Preorganized Cavitiesmentioning

confidence: 99%

“…For example, in studies by Schierbaum and «workers, the frequency shift observed upon exposure of a resorcin [4]arene-coated TSM device to perchloroethylene vapor corresponded to over 10 times more perchloroethylene molecules than cavitand molecules on the sensing surface [204,212]. In a number of studies of host-guest inclusion complexes, X-ray crystal structures have revealed guests residing at sites other than the cavity of host molecules [200,213,214]. Guest molecules including acetone, dichloromethane, and fluorobenzene were all found to reside among pendant alkyl chains.…”

Section: Materials With Preorganized Cavitiesmentioning

confidence: 99%

“…It has been observed that cavitand-coated sensors respond to a great variety of vapors, rather than responding solely to those vapors with an ideal "fit" [200][201][202][203][204][205][206][207][208][209][210][211]216]. Thus, the promise of compound specific sensors has not been achieved by this approach.…”

Section: Materials With Preorganized Cavitiesmentioning

confidence: 99%

See 2 more Smart Citations

Acoustic Wave Sensors

1996

View full text Add to dashboard Cite

Section: Materials With Preorganized Cavitiesmentioning

confidence: 99%

Section: Materials With Preorganized Cavitiesmentioning

confidence: 99%

See 1 more Smart Citation

Acoustic Wave Sensors

1996

View full text Add to dashboard Cite

“…They are easily coated on the surface of a mass sensitive sensor, where they form layers permeable to organic vapors after derivatization of the lower rim with long alkyl chains. Mass sensors coated with cavitands have been employed to detect volatile organic compounds such as aromatic hydrocarbons [12][13][14][15], alcohols [16,17], and acetates [18].…”

mentioning

confidence: 99%

ESI-FTICR mass spectrometric study of alcohol complexation properties of mono- and diphosphonate-bridged cavitands

Ventola

Vainiotalo

Suman

et al. 2006

J. Am. Soc. Mass Spectrom.

View full text Add to dashboard Cite

Alcohol complexation properties of eight mono-and diphenyl phosphonate-bridged cavitands (Scheme 1). were studied by electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry (ESI-FTICR) and theoretical calculations. The cavitands varied in number and position of phenyl phosphonate bridges and their orientation with respect to the cavity, length of the lower rim alkyl chains, and substituents at apical positions of the resorcarene skeleton. The specificities of the different cavitands toward primary, secondary, and tertiary alcohols varying long of the alkyl chain were investigated, together with the stabilities of the formed complexes. The number, position, and orientation of the P ϭ O moieties affected the complex formation of the cavitands and stability of the complexes dramatically. Methyl groups at apical positions of the resorcarene skeleton also affected the complexation properties. Although length and branching of the alkyl chain of the alcohol influenced the complex formation, the effect on stability of the complexes was negligible. (J Am Soc Mass Spectrom 2006, 17, 213-221)

show abstract

“…Macrocyclics, [1][2][3][4] mono-and multi-layers [5][6][7], and bio-organic molecules [8,9] have been used as coatings on the QCM electrode to improve its sensitivity and selectivity. It has been reported that in the gas systems, the simple dispersion forces, hydrogen bonding, or dipole-dipole interactions between the sensor coating and the analytes result in an increased signal intensity.…”

Section: Introductionmentioning

confidence: 99%

Detection of some volatile organic compounds with chitosan-coated quartz crystal microbalance

Ayad

Salahuddin

Minisy

2014

Designed Monomers and Polymers

View full text Add to dashboard Cite

A quartz crystal microbalance (QCM) electrode coated with Chitosan (Cs) film was used as a sensor for some volatile organic compounds (VOCs) such as aliphatic amines and alcohols. A homogeneous smooth thin films of Cs coating on the QCM electrode was prepared by drop casting method. The frequency shifts (Δf) of the QCM, due to adsorption of the VOCs under investigation, onto the Cs film were measured and were related to the analytes' concentrations. Calibration curves were obtained with linear relationships between the Δf (Hz) and the analyte concentrations (mg L −1 ). The sensor showed good sensitivity, reproducibility, and reversibility. The influence of different temperatures on the vapor adsorption, of the VOCs onto the Cs film, was studied.

show abstract

Cavitands as selective materials for QMB sensors for nitrobenzene and other aromatic vapours

Cited by 59 publications

References 9 publications

Acoustic Wave Sensors

Acoustic Wave Sensors

ESI-FTICR mass spectrometric study of alcohol complexation properties of mono- and diphosphonate-bridged cavitands

Detection of some volatile organic compounds with chitosan-coated quartz crystal microbalance

Contact Info

Product

Resources

About