Calixarene-coated piezoelectric quartz crystal sensor for the detection of organic amine in liquids

Chen, Langxing; He, Xiwen; Xu-Bo, Hu; Xu, Hua

doi:10.1039/a906300e

Cited by 24 publications

(8 citation statements)

References 27 publications

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“…Recent studies,10–13 including our previous works,14, 15 indicated that QCM‐modified electrodes can be used as effective sensors for detection of environmental pollutants.…”

Section: Introductionmentioning

confidence: 92%

Detection and determination of Cr^VI in solution using polyaniline modified quartz crystal electrode

Mirmohseni

Oladegaragoze

2002

J of Applied Polymer Sci

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Conducting polymers such as polyaniline and polypyrrole exhibit novel sensoric properties and are able to interact chemically or electrochemically with the species of interest for detection. In the current investigation, construction of a sensor based on an electrochemical reaction between Cr VI and a thin layer of polyaniline, coated at the surface of quartz crystal electrode, is reported. Polyaniline was synthesized, electrochemically, at the surface of quartz crystal electrode. It was then reduced at Ϫ0.1 V versus Ag/AgCl. The modified electrode was exposed to various concentrations of Cr VI solutions ranging from 10 Ϫ7 to 10 Ϫ1 M. Mass changes of the polymermodified electrode due to the reaction between Cr VI and polyaniline was found to be linear, corresponding to the concentration of Cr VI . The experiments in both acidic and nonacidic conditions were performed. In both conditions, linear double-logarithmic calibration curves of mass change of the polymer film versus Cr VI concentration were obtained.

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“…Recent studies,10–13 including our previous works,14, 15 indicated that QCM‐modified electrodes can be used as effective sensors for detection of environmental pollutants.…”

Section: Introductionmentioning

confidence: 92%

Detection and determination of Cr^VI in solution using polyaniline modified quartz crystal electrode

Mirmohseni

Oladegaragoze

2002

J of Applied Polymer Sci

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“…Resonance frequencies of the QCM sensor were measured through a data acquisition system connected to a personal computer system as described in previous reports. 15,[33][34][35] The frequency shifts were calculated as the difference between reaching stable equilibrium and before solvent exposure. The purge process was performed at a carrier gas flow rate of 100 mL min 21 .…”

Section: Instrumentationmentioning

confidence: 99%

Cyclodextrin derivative-coated quartz crystal microbalances for alcohol sensing and application as methanol sensors

Wang

Chen

et al. 2001

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Three novel cyclodextrin derivatives, mono(6-benzylimino-6-deoxy)-beta-cyclodextrin (2), mono-(6-cyclohexylamino-6-deoxy)-beta-cyclodextrin (3) and mono(6-benzylamino-6-deoxy)-beta-cyclodextrin (4), together with mono(6-phenylamino-6-deoxy)-beta-cyclodextrin (1), were synthesized and employed as sensing materials coated on quartz crystal microbalances (QCMs). Comparison of the responses to some alcohol and solvent vapours such as methanol, ethanol, propan-1-ol, propan-2-ol, butan-1-ol, acetone, chloroform and benzene indicated that these beta-cyclodextrin derivatives show considerable sensitivity and selectivity towards methanol. It shows a good linear relationship between the frequency shift and the methanol concentration in the range 3-160 mg L(-1) for 2-4 and 3-140 mg L(-1) for 1. The correlation coefficients are 0.9971, 0.9983, 0.9973 and 0.9977, respectively. The limit of detection (LOD) is 0.2 mg L(-1). When small amounts of other vapours co-exist, e.g., ethanol, propan-1-ol and acetone, the responses differ from that of pure methanol vapour, and a deduction method could eliminate this cross-sensitivity. The water cross-sensitivity was very low. These QCMs coated with cyclodextrin derivatives are employed as methanol sensors in the real atmosphere to detect on-line the concentration of methanol vapour.

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“…Calixarenes are macrocycles that are of interest due to the fact that they can be easily synthesized and can be functionalized to selectively bind neutral or ionic analytes (see reviews in refs − ). One use for calixarenes that is of specific interest to the current study is in nanosensor design (e.g., refs − ). Calixarenes are typically used in nanosensors by coating the nanomaterial with gold and then tethering the calixarenes to the gold.…”

Section: Introductionmentioning

confidence: 99%

Computational Study of Small Molecule Binding for Both Tethered and Free Conditions

Ytreberg

2010

J. Phys. Chem. B

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Using a calix [4]arene-benzene complex as a test system we compare the potential of mean force for when the calix [4]arene is tethered versus free. When the complex is in vacuum our results show that the difference between tethered and free is primarily due to the entropic contribution to the potential of mean force resulting in a significant binding free energy difference of 6.6 kJ/mol. By contrast, when the complex is in water our results suggest that there is no appreciable difference between tethered and free. This study elucidates the roles of entropy and enthalpy for this small molecule system and emphasizes the point that tethering the receptor has the potential to dramatically impact the binding properties. These findings should be taken into consideration when using calixarene molecules in nanosensor design.

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Calixarene-coated piezoelectric quartz crystal sensor for the detection of organic amine in liquids

Cited by 24 publications

References 27 publications

Detection and determination of Cr^VI in solution using polyaniline modified quartz crystal electrode

Detection and determination of Cr^VI in solution using polyaniline modified quartz crystal electrode

Cyclodextrin derivative-coated quartz crystal microbalances for alcohol sensing and application as methanol sensors

Computational Study of Small Molecule Binding for Both Tethered and Free Conditions

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Calixarene-coated piezoelectric quartz crystal sensor for the detection of organic amine in liquids

Cited by 24 publications

References 27 publications

Detection and determination of CrVI in solution using polyaniline modified quartz crystal electrode

Detection and determination of CrVI in solution using polyaniline modified quartz crystal electrode

Cyclodextrin derivative-coated quartz crystal microbalances for alcohol sensing and application as methanol sensors

Computational Study of Small Molecule Binding for Both Tethered and Free Conditions

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Product

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Detection and determination of Cr^VI in solution using polyaniline modified quartz crystal electrode

Detection and determination of Cr^VI in solution using polyaniline modified quartz crystal electrode