Supramolecular Based Membrane Sensors

Ganjali, Mohammad Reza; Norouzi, Parviz; Rezapour, Morteza; Faridbod, Farnoush; Pourjavid, Mohammad Reza

doi:10.3390/s6081018

Cited by 94 publications

(89 citation statements)

References 218 publications

(218 reference statements)

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“…A lot of studies are for replacing protein canals into cells membrane for passing proteins, drug and ions of metal. Therefore the presence of the SWCNT and its consequences to the biological activity of ions metal are of high impact in the development of biosensors, immunoassays and drug delivery systems (Zhang et al, 2005;Ganjali et al, 2006). This work, we used armchair carbon nanotube (5, 5) and (6, 6).…”

Section: Nmr and Ir Theoretical Study On The Interaction Of Doping Mementioning

confidence: 99%

Quantum Calculation in the Prediction of the Properties of Single-Walled Carbon Nanotubes (SWNTs) and Nanotube Bundles

Monajjemi¹,

Lee²

2011

Electronic Properties of Carbon Nanotubes

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Section: Nmr and Ir Theoretical Study On The Interaction Of Doping Mementioning

confidence: 99%

Quantum Calculation in the Prediction of the Properties of Single-Walled Carbon Nanotubes (SWNTs) and Nanotube Bundles

Monajjemi¹,

Lee²

2011

Electronic Properties of Carbon Nanotubes

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“…The value obtained equilibrium constant was 1.6 x 10 7 L/mol, thus confirming a high affinity between SDM and Mn III TPPCl. Considering that sensitivity and selectivity of a potentiometric selective membrane depends greatly on its components [17][18][19], a preliminary membrane composition was estimated using PVC as the polymeric support [20]. The plastic membrane prepared was applied in a solid contact electrode.…”

Section: Ionophore Binding To Sulfadimethoxinementioning

confidence: 99%

New and low cost plastic membrane electrode with low detection limits for sulfadimethoxine determination in aquaculture waters

Almeida

Montenegro

Sales

2013

Journal of Electroanalytical Chemistry

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A B S T R A C TSulfadimethoxine (SDM) is one of the drugs, often used in the aquaculture sector to prevent the spread of disease in freshwater fish aquaculture. Its spread through the soil and surface water can contribute to an increase in bacterial resistance. It is therefore important to control this product in the environment. This work proposes a simple and low-cost potentiometric device to monitor the levels of SDM in aquaculture waters, thus avoiding its unnecessary release throughout the environment. The device combines a micro-pipette tip with a PVC membrane selective to SDM, prepared from an appropriate cocktail, and an inner reference solution. The membrane includes 1% of a porphyrin derivative acting as ionophore and a small amount of a lipophilic cationic additive (corresponding to 0.2% in molar ratio). The composition of the inner solution was optimized with regard to the kind and/or concentration of primary ion, chelating agent and/or a specific interfering charged species, in different concentration ranges. Electrodes con-structed with inner reference solutions of 1 x 10 -8 mol/L SDM and 1 x 10 -4 mol/L chromate ion showed the best analytical features. Near-Nernstian response was obtained with slopes of -54.1 mV/decade, an extraordinary detection limit of 7.5 ng/mL (2.4 x 10 -8 mol/L) when compared with other electrodes of the same type. The reproducibility, stability and response time are good and even better than those obtained by liquid contact ISEs.Recovery values of 98.9% were obtained from the analysis of aquaculture water samples.

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“…(1, 2) They can attain molecular weights like those of polymers but also have a well-defined molecular packing akin to those of inorganic or metallic lattices. A rich selection of the building blocks and the resulting long-range ordering in packing have largely promoted their use in a wide variety of applications such as molecular recognition, (3,4) flexible electronics, (5) and catalysis. (6) In contrast to the strong interactions commonly seen in regular crystals, the building blocks inside supramolecules are organized via a noncovalent binding, (1,2) including van der Waals forces, hydrogen bonding, or weak electrostatic interactions.…”

Section: Introductionmentioning

confidence: 99%

Supramolecular Nanolayer Reconfiguration after Molecular Intercalation

Dhôtel

Fernandez-Ballester

et al. 2011

J. Phys. Chem. C

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We examined the structural reconfiguration after intercalating foreign additives, that is, tetramethoxysilane (TMOS), within already formed supramolecular nanolayers of hexadecyltrimethoxysilane (HDTMS). Our experiments indicated that the newly formed interdigitated structure is a thermodynamically more stable configuration. Even after the HDTMS formed initial bilayer-by-bilayer structures, mixing of these aggregates with foreign additives at room temperature can change the original structure to a more compact configuration (i.e., interdigitated). Our MD simulations further revealed that the most favorable organization for this interdigitated stacking appears to be a formation of relatively small domains of HDTMS and TMOS molecules, supporting our proposal of a heterogeneous mixing before reorganization. Although the coassembly of binary or multiple building blocks has previously been used to modify a supramolecule or to produce a supramolecular composite, the modification of already formed supramolecules via molecular intercalation, examined here, provides a flexible path for decorating more advanced supramolecules without disturbing their complex assembly conditions.

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Supramolecular Based Membrane Sensors

Cited by 94 publications

References 218 publications

Quantum Calculation in the Prediction of the Properties of Single-Walled Carbon Nanotubes (SWNTs) and Nanotube Bundles

Quantum Calculation in the Prediction of the Properties of Single-Walled Carbon Nanotubes (SWNTs) and Nanotube Bundles

New and low cost plastic membrane electrode with low detection limits for sulfadimethoxine determination in aquaculture waters

Supramolecular Nanolayer Reconfiguration after Molecular Intercalation

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