Layer-by-Layer self-assembled acetylcholinesterase/PAMAM-Au on CNTs modified electrode for sensing pesticides

Qu, Yunhe; Sun, Qian; Xiao, Fei; Shi, Guoyue; Jin, Litong

doi:10.1016/j.bioelechem.2009.08.001

Cited by 113 publications

(35 citation statements)

References 20 publications

(14 reference statements)

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“…A comparative study was carried out with the (SiPy + Cl À / CuTsPc) 5 5 film is due to the self-assembly technique, which provides thin films with high molecular ordering and stability due to electrostatic interactions occurring between components of the film [24], according to the scheme showed in Figure 2 proved by XPS measurements [9].…”

Section: Electrochemical Behaviourmentioning

confidence: 99%

Electroanalytical Performance of (SiPy⁺Cl⁻/CuTsPc)₅ LbL Film for Detecting Promethazine Hydrochloride

et al. 2011

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A (SiPy+ Cl À /CuTsPc) 5 layer-by-layer film was employed for the electroanalytical determination of promethazine hydrochloride in BR buffer pH 5.0 with peaks at 0.48 and 0.79 V. After optimisation of the square-wave parameters (f = 100 s À1, a = 40 mV and DE s = 2 mV), the peak at 0.79 V was used for quantification and a detection limit of 8.71 10 À9 mol L À1 and a quantification limit of 9.31 10 À8 were calculated. The applicability of this procedure was tested on commercial formulations of promethazine hydrochloride by observing the stability, specificity, recovery and precision of the procedure in complex samples, without any preliminary treatment.

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Section: Electrochemical Behaviourmentioning

confidence: 99%

Electroanalytical Performance of (SiPy⁺Cl⁻/CuTsPc)₅ LbL Film for Detecting Promethazine Hydrochloride

et al. 2011

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“…A fruitful association of these two wonderful nanoscale objects can give rise to many exciting material properties which can have wide range of applications 27,[37][38][39][40][41][42][43][44][45] . The interaction of CNT with dendrimers is not fully understood and only one study addresses the complexation between poly(propyl ether imine) (PETIM) dendrimer and the nanotubes 46 .…”

Section: Introductionmentioning

confidence: 99%

Structure of a carbon nanotube–dendrimer composite

et al. 2013

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Using all atomistic molecular dynamics (MD) simulations we report the microscopic picture of the nanotube-dendrimer complex for PAMAM dendrimer of generation 2 to 4 and carbon nanotube of chirality (6,5). We find compact wrapping conformations of dendrimer onto the nanotube surface for all the three generations of PAMAM dendrimer. The degree of wrapping is more for non-protonated dendrimer compared to the protonated dendrimer. For comparison we also study the interaction of another dendrimer, poly(propyl ether imine) (PETIM), with nanotube and show that PAMAM dendrimer interacts strongly as compared to PETIM dendrimer as is evident from the distance of closest approach as well as the number of close contacts between the nanotube and dendrimer. We also calculate the binding energy between the nanotube and the dendrimer using MM/PBSA methods and attribute the strong binding to the charge transfer between them. Dendrimer wrapping on CNT will make it soluble and can act as an efficient dispersing agent for nanotube.

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“…Also, gold nanoparticles and polymers can be assembled to act as an immobilization matrix of AChE. This resulting composite matrix exhibits a porous structure with large effective surface areas, good conductivity and high catalytic activity, which greatly facilitates electron-tranfer processes and the action of the immobilized AChE for organophosphorous pesticides (Gong et al, 2009) Qu et al (2010) propose as electrode modifier a layer-by-layer self-assembled acetylcholinesterase/dendrimers polyamidoamine-Au-carbon nanotubes configuration. The dendrimers polyamidoamine provides to electrode favorable configuration for the immobilization of AChE.…”

Section: Micro and Nanostructured Materials In Electrochemical Sensormentioning

confidence: 99%

New Materials in Electochemical Sensors for Pesticides Monitoring

Goicolea¹,

Gómez‐Caballero²,

Barrio³

2011

Pesticides - Strategies for Pesticides Analysis

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Layer-by-Layer self-assembled acetylcholinesterase/PAMAM-Au on CNTs modified electrode for sensing pesticides

Cited by 113 publications

References 20 publications

Electroanalytical Performance of (SiPy⁺Cl⁻/CuTsPc)₅ LbL Film for Detecting Promethazine Hydrochloride

Electroanalytical Performance of (SiPy⁺Cl⁻/CuTsPc)₅ LbL Film for Detecting Promethazine Hydrochloride

Structure of a carbon nanotube–dendrimer composite

New Materials in Electochemical Sensors for Pesticides Monitoring

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Layer-by-Layer self-assembled acetylcholinesterase/PAMAM-Au on CNTs modified electrode for sensing pesticides

Cited by 113 publications

References 20 publications

Electroanalytical Performance of (SiPy+Cl−/CuTsPc)5 LbL Film for Detecting Promethazine Hydrochloride

Electroanalytical Performance of (SiPy+Cl−/CuTsPc)5 LbL Film for Detecting Promethazine Hydrochloride

Structure of a carbon nanotube–dendrimer composite

New Materials in Electochemical Sensors for Pesticides Monitoring

Contact Info

Product

Resources

About

Electroanalytical Performance of (SiPy⁺Cl⁻/CuTsPc)₅ LbL Film for Detecting Promethazine Hydrochloride

Electroanalytical Performance of (SiPy⁺Cl⁻/CuTsPc)₅ LbL Film for Detecting Promethazine Hydrochloride