Rectification of nanopores in aprotic solvents – transport properties of nanopores with surface dipoles

Plett, Timothy S.; Shi, Wenqing; Zeng, Yuhan; Mann, William A.; Vlassiouk, Ivan; Baker, Lane A.; Siwy, Zuzanna S.

doi:10.1039/c5nr06340j

Cited by 43 publications

(65 citation statements)

References 67 publications

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“…227 Recently, similar methods were employed to sense the surface-charge behavior of polycarbonate membranes in different electrolyte solutions such as propylene carbonate, which is widely used in lithium-ion batteries. 228 …”

Section: Solid-state Nanoporesmentioning

confidence: 99%

Nanopore Sensing

2016

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Section: Solid-state Nanoporesmentioning

confidence: 99%

Nanopore Sensing

2016

Self Cite

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“…The precise Watson-Crick base pairing and the specific stranddisplacement reactions make DNA as a programmable material for nanoscale technology and science. [66] One of intriguing DNA-based nanotechnologies is to trigger DNA amplification Small 2019, 15,1804878 Figure 5. Specific recognitions of the nanochannels/nanopores functionalized by small biomolecules.…”

Section: Nucleic Acids For the Signal Amplificationmentioning

confidence: 99%

“…The indirect bonding discussed here means that the original functional groups of nanochannels/nanopores are first covered and the subsequent functionalization with the biomolecules is performed on the new created surface. The most common Small 2019, 15,1804878 Figure 13. Functionalization of polymer nanochannels/nanopores by direct bonding: a) The functionalization of funnel-shaped FET nanochannel with dopamine (DOPA) by the typical two-step method.…”

Section: Indirect Bondingmentioning

confidence: 99%

Biomolecule‐Functionalized Solid‐State Ion Nanochannels/Nanopores: Features and Techniques

Ding

Gao

et al. 2019

Small

118

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Solid‐state ion nanochannels/nanopores, the biomimetic products of biological ion channels, are promising materials in real‐world applications due to their robust mechanical and controllable chemical properties. Functionalizations of solid‐state ion nanochannels/nanopores by biomolecules pave a wide way for the introduction of varied properties from biomolecules to solid‐state ion nanochannels/nanopores, making them smart in response to analytes or external stimuli and regulating the transport of ions/molecules. In this review, two features for nanochannels/nanopores functionalized by biomolecules are abstracted, i.e., specificity and signal amplification. Both of the two features are demonstrated from three kinds of nanochannels/nanopores: nucleic acid–functionalized nanochannels/nanopores, protein‐functionalized nanochannels/nanopores, and small biomolecule‐functionalized nanochannels/nanopores, respectively. Meanwhile, the fundamental mechanisms of these combinations between biomolecules and nanochannels/nanopores are explored, providing reasonable constructs for applications in sensing, transport, and energy conversion. And then, the techniques of functionalizations and the basic principle about biomolecules onto the solid‐state ion nanochannels/nanopores are summarized. Finally, some views about the future developments of the biomolecule‐functionalized nanochannels/nanopores are proposed.

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“…In most studies, inorganic salts (e.g., KCl and NaCl) in aqueous solutions have been used. Siwy and co-workers have considered the case of ionic liquids, aprotic solvents, and solid-state electrolytes [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Tetraalkylammonium Cations Conduction through a Single Nanofluidic Diode: Experimental and Theoretical Studies

Ali

Ramı́rez

Nasir

et al. 2017

Electrochimica Acta

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We describe experimentally and theoretically the concentration-dependent conduction of tetraalkylammonium (TAA +) cations through a nanofluidic diode fabricated in a polymer membrane via asymmetric track-etching techniques. This single-pore membrane exhibits current rectification characteristics because of the ionized carboxylate groups on the pore surface. We use aqueous solutions of potassium (K +), ammonium (A +), tetramethylammonium (TMA +), tetraethylammonium (TEA +), and tetrabutylammonium (TBA +) ions with concentrations ranging from 50 to 500 mM under acidic (pH 3.5) and physiological (pH 6.5) conditions. Compared with the K + and A + ions, the TMA + , TEA + , and TBA + ions show relatively low rectified ion currents because the cation hydrophobicity increases with the alkyl chain. At low concentrations and acidic conditions, an inversion in the current rectification characteristics is observed, which is attributed to the adsorption of the organic cations on the pore surfaces. The experimental results can be analyzed in terms of the Poisson-Nernst-Planck equations and the geometrical and electrical single pore characteristics for the different ions, pH values, and salt concentrations employed. This theoretical approach is qualitative and could be extended further to include a selfconsistent theoretical treatment of the ionic adsorption and surface charge equilibria.

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Rectification of nanopores in aprotic solvents – transport properties of nanopores with surface dipoles

Cited by 43 publications

References 67 publications

Nanopore Sensing

Nanopore Sensing

Biomolecule‐Functionalized Solid‐State Ion Nanochannels/Nanopores: Features and Techniques

Tetraalkylammonium Cations Conduction through a Single Nanofluidic Diode: Experimental and Theoretical Studies

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