Electrochemical properties of interface formed by interlaced layers of DNA- and lysozyme-coated single-walled carbon nanotubes

Multiscale electrochemistry of hydrogels embedding conductive nanotubes

“…16,17 Local electrochemical probe microscopy techniques, such as SECM or scanning electrochemical cell microscopy (SECCM), are ideal to characterize in situ the conductive properties of materials such as CNT based materials going from single CNTs 17,18 to CNT networks. [19][20][21] Only a few approaches have been reported to study the electrochemical activity of CNTs, or other graphene-like materials, mixed with polymers, 22,23 even though CNTs offer promising strategies for the development of novel methodologies for the formulation of energy storage materials.…”

Lysozyme Dispersed Single-Walled Carbon Nanotubes: Interaction and Activity

“…1 The combination of carbon nanotubes and Nature's toolbox 2 is particularly intriguing because biomolecules such as double-stranded DNA, proteins, and enzymes facilitate CNT dispersion in aqueous solvents and can augment the properties of bulk materials assembled from CNT dispersions. 3,4 The most predominantly studied biomolecule in combination with single-walled carbon nanotubes (SWNT) is DNA due to its ability to sort SWNT, 5 favorable interactions, 6 interfacial properties, 7 and phase behavior. 8,9 In addition, DNA−SWNT dispersions have been assembled into sensors, 7,10−13 films, 9 and fibers.…”

“…Carbon nanotubes (CNT) have been the subject of intense, multidisciplinary research for two decades because of their unique combination of electrical, mechanical, optical, and thermal properties . The combination of carbon nanotubes and Nature’s toolbox is particularly intriguing because biomolecules such as double-stranded DNA, proteins, and enzymes facilitate CNT dispersion in aqueous solvents and can augment the properties of bulk materials assembled from CNT dispersions. , The most predominantly studied biomolecule in combination with single-walled carbon nanotubes (SWNT) is DNA due to its ability to sort SWNT, favorable interactions, interfacial properties, and phase behavior. , In addition, DNA–SWNT dispersions have been assembled into sensors, ,− films, and fibers. , Understanding the interactions between proteins and CNT is important for expanding the biological, medical, and dental applications of CNT materials as well as understanding potential interactions with CNT surfaces in vivo. − Since CNT are difficult to disperse solid materials and proteins are typically studied in solution, there has been a need to develop new protocols to achieve dispersion and characterize interactions …”

Layer-by-Layer Catalytic Interface for Electrochemical Detection of Multiple Substrates Featuring Bio-Functionalized Carbon Nanotubes

“…The layers are built up by exposing the charged surface of the substrate/film to the anionic/cationic species in liquid form, which then adsorbs onto the substrate/film to form a layer through electrostatic attraction. Biomaterials, especially proteins which are water-soluble, are well suited for film development using this technique, due to the presence of charged sites at their surface (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15). Recently, it has been the focus of many research groups for its application in biosensors, due to the inherent advantages of LbL assembly.…”

“…Recently, it has been the focus of many research groups for its application in biosensors, due to the inherent advantages of LbL assembly. One such advantage is the open structure of the films allowing for interpenetration of the layers by liquid media, which has been demonstrated to enhance the signal for single analyte systems (2,3,5,(8)(9)(10)(12)(13)(14)(15). Thus, it may be advantageous to build a multi-analyte system, wherein multiple substrates could be simultaneously detected on the same platform.…”