Layer-by-layer assembly of single-walled carbon nanotube–poly(viologen) derivative multilayers and their electrochemical properties

Polymer/clay and polymer/carbon nanotube hybrid organic–inorganic multilayered composites made by sequential layering of nanometer scale films

“…For their uses as sensors, cell scaffolds, drug delivery carrier, and fuel cell membranes, the judicial selection of polymeric matrix in LBL assembly is required for enhancing the performances in the field of application. The scopes of macromolecules as CNTs' LBL counter partner are extended from conventional LBL polymers such as poly(vinyl alcohol) (PVA) [106], poly(allylamine hydrocholoride) (PAH) [119], poly(ethylene imine) (PEI) [8,120], poly(diallyldimethyl ammonium choloride) (PDDA), poly(acrylic acid) (PAA) [121], to functional materials like poly(3,4-ethylenedioxythiphene)/poly(styrene sulfonate) (PEDOT/PSS) [122], poly(anilne) (PANI) [123], polypyrrole (PPy) [124,125], light sensitive diazoresin (DR) [113], poly(viologen) derivatives [126,127], porphyrin [127], prussian blue (PB) [128,129], and to bio related materials such as blood-compatible poly(lactic acid-co-glycolic acid) (PLGA) [130], biopolymer Chitosan [129], antimicrobial lysozyme (LSZ) [131], antisense oligodeoxynucleotide (ASODN) enzymes [132]. In the following subsections, detailed examples of CNT LBL assembly classified by applications are introduced.…”

Electrochemistry of Single-Walled Carbon Nanotubes-Viologen Composites on the Glass Carbon Electrodes

“…Compared to the image of the (Nafion)SWCNTs mixtures, nanotube bundles were clearly distinguished and distributed across the matrix without any preferred orientation (Figs not shown). The diameters and domains for the nanotubes or composites were much larger than those observed for the LBL multilayers of SWCNTs-POV, 7 the difference of which may be because the SWCNTs used here were covered by the Nafion polymer.…”

“…Based on the intermolecular electrostatic interaction, we have prepared layer-by-layer (LBL) multilayers of oxidized SWCNTs and poly(octylviologen), which showed highly reversible redox behaviors and strong stability in the electrolyte solutions. 7 The co-assembled SWCNTs could enhance the electron transfer efficiency between electrode and poly(viologen). Here, we investigated the electrochemical properties of a series of viologen derivatives in their casting films with the SWCNTs.…”

Layer‐by‐layer self‐assembled multilayer films of single‐walled carbon nanotubes and tin disulfide nanoparticles with chitosan for the fabrication of biosensors

“…The layer‐by‐layer (LBL) assembly technique is one of the most successful methods for preparing thin films, and it can control the thickness and structural morphology of a film 23. This technique is based on the alternating adsorption of oppositely changed materials, and thin films of various proteins and nanoparticles can be prepared via this method 24–27. In this study, we assembled functionalized single‐walled carbon nanotube (SWNT) and SnS 2 multilayer films on glassy carbon electrodes (GCEs) by alternately assembling positively charged SnS 2 , which was dispersed in CS, and negatively charged SWNTs on the basis of electrostatic interaction.…”