Hydration number of calcium palmitate LB film deposited on a piezoelectric quartz crystal plate

Seo, Byung-Il; Lee, H.; Chung, Jong-Jae; Cha, Seung-Hee; Lee, K.H.; Seo, Won-Jun; Cho, Y.; Park, H.B.; Kim, W.S.

doi:10.1016/s0040-6090(98)00750-0

Cited by 11 publications

(7 citation statements)

References 17 publications

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“…The average frequency change for one layer of CPB and SWCNTs was about 55 and 80 Hz, respectively. Based on the equation of DF ¼ À 2 F 2 Dm/(A 1 q 1/2 m q 1/2 ), where DF (Hz) is the frequency change caused by adsorbed mass, F 0 is the fundamental resonant frequency of 9 Hz, Dm (g) is the mass change, A is the electrode area (0.196 cm 2 ), 1 q is the density of the quartz (2.65 g/cm 3 ), and m q is the shear module (2.95 Â 10 11 dyne/cm 2 ) [45], the mass change after each assembly of CPB and SWCNTs was about 73.4 and 107.2 ng, respectively.…”

Section: The Mechanism For the Lbl Depositionmentioning

confidence: 99%

A Novel Functionalized Single‐Wall Carbon Nanotube Modified Electrode and Its Application in Determination of Dopamine and Uric Acid in the Presence of High Concentrations of Ascorbic Acid

Zhang

Pan

et al. 2007

Electroanalysis

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Multilayer films of negatively charged single-wall carbon nanotubes (SWCNTs) and positively charged cetylpyridinium bromide (CPB) have been deposited on a glassy carbon electrode (GCE) using layer-by-layer (LBL) technique. The assembled multilayer films have been investigated by scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS), and quartz crystal microbalance (QCM) measurements. The voltammetric signal of dopamine (DA), uric acid (UA), and ascorbic acid (AA) could be observed well-separated with the assembled SWCNTs/CPB multilayer films in pH 7.0 PBS. The oxidation peak potentials of DA, UA, and AA are centered at about 169 mV, 292 mV and À 10 mV on differential pulse voltammograms (DPVs), respectively. The peakto-peak potential separation was 123 mV, 179 mV, and 302 mV for DA-UA, DA-AA, and UA-AA in DPVs, respectively. This permits the simultaneous detection of DA and UA in the presence of AA.

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Section: The Mechanism For the Lbl Depositionmentioning

confidence: 99%

A Novel Functionalized Single‐Wall Carbon Nanotube Modified Electrode and Its Application in Determination of Dopamine and Uric Acid in the Presence of High Concentrations of Ascorbic Acid

Zhang

Pan

et al. 2007

Electroanalysis

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“…The piezoelectric phenomenon of QCM was described in detail by Sauerbery [33] and the following equation describes the resonant frequency of the QCM crystal [34,35]:…”

Section: Mass Changes Of Quartz Crystal Microbalancementioning

confidence: 99%

Characterisation of Langmuir–Blodgett films of new multinuclear copper and zinc phthalocyanines and their sensing properties to volatile organic vapours

Açıkbaş

Evyapan

Ceyhan

et al. 2007

Sensors and Actuators B: Chemical

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“…Based on the equation of ΔF = −2 F 0 2 Δm /( A ρ q 1/2 μ q 1/2 ), where F 0 is the fundamental resonant frequency (9 MHz), Δ m (g) is the mass change, A is the surface area (0.196 cm 2 ) of the QCM resonator, ρ q is the density of the quartz (2.65 g/cm 3 ), and μ q is the shear module (2.95 × 10 11 dyne/cm 2 ) [21], the mass change was about 5.2 μg/cm 2 .…”

Section: Resultsmentioning

confidence: 99%

Self-assembled monolayers of pyridylthio-functionalized carbon nanotubes used as a support to immobilize cytochrome c

et al. 2013

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Self-assembled monolayers (SAMs) of pyridylthio-functionalized multiwalled carbon nanotubes (pythio-MWNTs) have been constructed on the gold substrate surface, which were used as a support to immobilize cytochrome c (Cyt c). The assembly processes of the SAMs and adsorption of Cyt c were monitored by using quartz crystal microbalance (QCM). Based on the frequency change of the QCM resonator, the surface coverage for the SAMs of pythio-MWNTs was estimated to be about 5.2 μg/cm2, and that of the Cyt c adsorbed was about 0.29 μg/cm2. For the gold electrode modified by the SAMs of pythio-MWNTs-Cyt c, a quasi-reversible redox wave was recorded with the cathodic and anodic potentials at about −0.55 and −0.28 V vs Ag/AgCl, respectively. Compositions and morphologies of the SAMs before and after immobilization of Cyt c were characterized by X-ray photoelectron spectroscopy, Raman spectroscopy, scanning electron microscopy, and atomic force microscopy.

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Hydration number of calcium palmitate LB film deposited on a piezoelectric quartz crystal plate

Cited by 11 publications

References 17 publications

A Novel Functionalized Single‐Wall Carbon Nanotube Modified Electrode and Its Application in Determination of Dopamine and Uric Acid in the Presence of High Concentrations of Ascorbic Acid

A Novel Functionalized Single‐Wall Carbon Nanotube Modified Electrode and Its Application in Determination of Dopamine and Uric Acid in the Presence of High Concentrations of Ascorbic Acid

Characterisation of Langmuir–Blodgett films of new multinuclear copper and zinc phthalocyanines and their sensing properties to volatile organic vapours

Self-assembled monolayers of pyridylthio-functionalized carbon nanotubes used as a support to immobilize cytochrome c

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