Formation of conductive polyaniline nanoarrays from block copolymer template via electroplating

She, Ming-Shiuan; Ho, Rong‐Ming

doi:10.1016/j.polymer.2012.04.031

Cited by 21 publications

(14 citation statements)

References 32 publications

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“…PANi nanorods also showed an extra redox couple owing to the presence of quinone-type defects. [79] [68] On the other hand, instead of continuous potential application used in the above studies, periodic pulsed-potential application was examined for better controlled formation of PANi nanofiber arrays (ca.…”

Section: Electrochemical Polymerizationmentioning

confidence: 99%

Electrochemical Applications of Microphase‐Separated Block Copolymer Thin Films

Ito

Ghimire

2018

ChemElectroChem

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In this review, we discuss electrochemical applications of electrode-supported thin films derived from microphase-separated block copolymers (BCPs). In contrast to conventional homopolymers used for electrode modification, BCPs afford periodic nanoscale structures (microdomains) of uniform dimensions (5-100 nm) and predictable morphologies, which can be controlled by adjusting the lengths of individual homopolymer segments. BCPs usable for electrochemical applications consist of two or more segments that form solute-permeable, redox-active or etchable microdomains and a chemically inert matrix. The resulting microdomains afford nanoscale molecular/charge transport pathways toward the underlying electrode, whereas the matrix serves as a scaffold to improve film stability in solution. These polymeric thin films provide a unique means for fabricating nanowire arrays via template-based electrochemical synthesis, designing electrochemical sensors with unique selectivity, and constructing electrochemically-tunable functional materials.[a] Prof.

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Section: Electrochemical Polymerizationmentioning

confidence: 99%

Electrochemical Applications of Microphase‐Separated Block Copolymer Thin Films

Ito

Ghimire

2018

ChemElectroChem

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“…However, the self-assembled polymer nanostructures lack a precise control in the morphologies and properties. To make well-ordered organic nanostructures with controllable morphology for fabricating OPVs, the template-assisted fabrication is one of the most common approaches by employing nanoporous templates, such as track-etched membranes, [73][74][75][76][77][78][79] block-copolymer templates, [ 13,[80][81][82][83] anodic titanium oxide (ATO) templates, [84][85][86][87] polyfl uoropolyether (PFPE) molds, [ 88 ] polydimethylsiloxane (PDMS) stamps, [ 89 ] silicon templates, [ 53,[90][91][92][93][94] and AAO templates. [ 62,[95][96][97][98][99][100][101] Track-etch membranes are produced by irradiating polymeric fi lms (polycarbonate or polyester) with ion beams and a subsequent wet-chemical etching.…”

Section: Anodic Aluminum Oxide Template Techniquementioning

confidence: 99%

“…Polymeric tubules and fi bers consisting of conducting polymers (e.g., polypyrrole, poly(3methylthiophene), and polyaniline) can be synthesized in the nanoporous membranes by applying an in situ oxidative polymerization. [73][74][75][76][77][78][79] Nanoporous block-copolymer templates can be prepared by self-assembling the minor component into arrays of hexagonally arranged cylinders, [ 13,[80][81][82][83] and selectively removing the minor block in the nanocylinders. These nanoporous block-copolymer templates with pore diameter ranging from a few nanometers to ca.…”

Section: Anodic Aluminum Oxide Template Techniquementioning

confidence: 99%

Ordered Organic Nanostructures Fabricated from Anodic Alumina Oxide Templates for Organic Bulk‐Heterojunction Photovoltaics

Yang

Cao

et al. 2014

Macro Chemistry & Physics

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Solution‐processable organic photovoltaics (OPVs) attract much attention due to their potential as low‐cost and lightweight sources of renewable energy. The power conversion efficiency (PCE) of state‐of‐the‐art OPVs based on bulk‐heterojunction and tandem structures can reach over 10.0%, resulting from the progress in new materials, device engineering, device physics, etc. In particular, the fabrication and controllability of solution‐processable organic active‐layer thin films play an important role in the performance of OPV devices. The anodic aluminum oxide (AAO) template method is a versatile and fascinating technique for fabricating ordered organic nanostructures with controlled properties. Here, a review is given on the solution‐based fabrication of ordered organic semiconductor nanostructures by AAO templates, as well as its application in OPVs.

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“…7 The corresponding piezoelectric microgravimetry/differential pulse voltammetry/capacitive impedimetry sensors revealed high LODs (>0.26 mM) and that still needs a major improvement for chemotherapy assessment. 10,11 In contrast to the MIP nanowires, which are prepared thermally within the pores of aluminium membrane followed by chemically dissolving alumina, have interconnected overlapped heterogeneous texture, 12 MIP-nanoarrays can be prepared following a similar protocol but with a "brush like" texture mostly vertically tethered to the electrode surface which command a larger surface area (or volume) for unhindered analyte diffusion in between any two MIP bristles. 8 However, the use of mercury should be avoided owing to environmental hazards.…”

Section: Introductionmentioning

confidence: 99%

Development of molecularly imprinted polymer nanoarrays of N-acryloyl-2-mercaptobenzamide on a silver electrode for ultratrace sensing of uracil and 5-fluorouracil

Prasad

Kumar

2015

J. Mater. Chem. B

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The present work describes a new, simple and easy method for the generation of novel molecularly imprinted polymer-based nanoarrays with uracil and 5-fluorouracil as template(s) on the surface of silver electrode. The procedure involved an electrochemical etching of silver-wire to develop nanopores on its tip. In these nanopores, a prepolymer mixture with template(s) was filled-in via spin coating and subjected to the free radical thermal polymerization. The bulk polymer and polymer film characteristics were investigated using Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, scanning electron microscopy, and atomic force microscopy. The prepolymerization complex stoichiometry involved one template molecule and two molecules of the N-acryloyl-2mercaptobenzamide functional monomer. Molecular structure of this complex was thermodynamically optimized via density functional theory at MP2/6-31+G (d, p) level. The nanoarrays, vertically tethered imprinted polymer brush with embedded carbon nanotubes, helped enhancing surface area of the electrode. This drastically facilitated unhindered vertical diffusion with selective binding of uracil and 5-fluorouracil and their sensitive analysis using differential pulse anodic stripping voltammetry, with detection limits as low as 0.50 and 0.33 ng mL -1 (S/N=3), respectively. The proposed nanoscale electro-chemical sensor was also validated with the complex matrices of blood plasma and pharmaceutics which assured reliable results, without any matrix effect, cross-reactivity, and false-positives. The large therapeutic range of test analyte (uracil 1.49-278.76 ng mL -1 , 5-fluorouracil 1.33-401.15 ng mL -1 ), demonstrating a perfect linearity (R 2 = 0.98) with the improved voltammetric response, merits special significance for the primitive diagnosis of several chronic diseases, in clinical settings, without any sample pretreatment. 4 anodized at an optimized low electrical voltage to develop small-bore nanopores. These nanopores were subsequently filled with a prepolymerization mixture [N-acryloyl-2-mercaptobenzamide (functional monomer), Ura or 5-FU (template), ethylene glycol dimethacrylate (cross-linker), azobisisobutyronitrile (AIBN, initiator), and MWCNTs] and subjected to the thermal polymerization.The Ag membrane around MIP nanopores was then removed by chemical dissolution, leaving behind MIP-nanoarrays with template molecule binding sites situated at the surface. This allowed π-π electronic interactions between MWCNTs and aromatic precursors (monomer and template) and selfassembled hydrogen bonded monomer-template complex confined within the nano arrays that provide an unique environment of homogeneously distributed recognition sites to promote sensitivity.

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Formation of conductive polyaniline nanoarrays from block copolymer template via electroplating

Cited by 21 publications

References 32 publications

Electrochemical Applications of Microphase‐Separated Block Copolymer Thin Films

Electrochemical Applications of Microphase‐Separated Block Copolymer Thin Films

Ordered Organic Nanostructures Fabricated from Anodic Alumina Oxide Templates for Organic Bulk‐Heterojunction Photovoltaics

Development of molecularly imprinted polymer nanoarrays of N-acryloyl-2-mercaptobenzamide on a silver electrode for ultratrace sensing of uracil and 5-fluorouracil

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