The effect of co‐dopants on the processability of intrinsically conducting polymers

Dahman, Sam J.

doi:10.1002/pen.11607

Cited by 8 publications

(6 citation statements)

References 18 publications

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“…Deposition of JV forms of doped CP, via ink-jet or syringe for instance, followed by evaporation of solvent, is one promising approach. This solution casting method has been demonstrated to produce films with reasonably good mechanical properties in at least two conducting polymers (poly(3-octylthiophene) (P3OT), and polyaniline (PANI)) (Dahman 1999), and actuation of solution-cast P3OT in liquid electrolyte has been reported by Chen (Chen and Inganas 1995). We have cast films of P3OT using the methods of Dahman, and verified their actuation ( Figure 8) in liquid electrolye.…”

Section: Conducting Polymerssupporting

confidence: 55%

Functional Freeform Fabrication for Physical Artificial Life

Malone

Lipson²

2004

Artificial Life IX

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Solid freeform fabrication (SFF) allows 3D-printing of arbitrarily shaped structures, directly from computer-aided design (CAD) data. SFF has traditionally focused on printing passive mechanical parts. Advances in this technology and developments in materials science make it feasible to begin the development of a single, compact, robotic SFF system-including a small set of materialswhich can produce complete, active, functional electromechanical devices-mobile robots, for instance. We are advancing steadily toward this goal, and successes thus far have included the freeform fabrication of zinc-air batteries, conductive wiring, flexure joints, and combinations of these with thermoplastic structures. Several essential functionalities-actuation, sensing, and control electronics-still remain to be realized before complete electromechanical systems can be produced via SFF. Conducting polymers (CP) are a class of materials which can be used to produce all of these. Several SFFcompatible CP processing methods have been identified, and actuators produced via one of these have been demonstrated. When coupled in a closed-loop with an evolutionary design system, the ability to produce robots entirely via SFF becomes a bridge between the physical and the simulated, giving artificial evolution a complete physical substrate of enormous richness to explore with little or no human involvement.

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Section: Conducting Polymerssupporting

confidence: 55%

Functional Freeform Fabrication for Physical Artificial Life

Malone

Lipson²

2004

Artificial Life IX

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“…Incorporation of p‐toluene sulfonate anion enhances environmental stability of PPy because it is difficult to remove from PPy backbone due to its larger size in comparison to Cl − anion. Incorporation of p‐toluene sulfonate anion in PPy structure beyond an optimum level may reduce in intermolecular hopping of charge carriers due to increased gap between the polymer chains by bulky side groups of the anions and thereby adversely affecting surface resistivity …”

Section: Resultsmentioning

confidence: 99%

“…Initially, incorporation of dopant anions in the PPy chain creates charge carriers and enhanced the electrical conduction. With further increase in dopant there may be reduction in intermolecular hopping of charge carriers due to increased gap between the polymer chains by bulky side groups of the anions and thereby adversely affecting surface resistivity …”

Section: Resultsmentioning

confidence: 99%

Polypyrrole‐silk electro‐conductive composite fabric byin situchemical polymerization

Malhotra

Maity

Chatterjee

2014

J of Applied Polymer Sci

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This article describes the preparation of polypyrrole-silk composite fabric by in situ chemical polymerization of pyrrole. In situ polymerization process has been optimized by employing Box-Behnken response surface design. The effect of process parameters on surface resistivity of the fabric has been statistically analyzed. Most significant process parameter and interaction effects have been identified. Thermal, electrical, and morphological properties of the composite fabric have been studied. Surface resistivity of the fabric obtained is 636.33 X. The fabric composite shows a liner V-I characteristic like an Ohmic conductor. An exponential rise of surface temperature of the fabric is observed by the application of DC voltage across it. Optical microscopic and SEM studies reveal uniform and even coating of polypyrrole on silk surface. FTIR studies indicate a possible chemical interaction between polypyrrole and silk. The polypyrrole-treated composite fabric exhibits enhanced thermal stability as is evidenced from DSC and TGA result.

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“…To obtain the conductive emeraldine salt forms of PANI (see Scheme 1b,c), the emeraldine base is chemically doped by exposure to an acid. 9 Frequently, smallmolecule acids, such as hydrochloric acid, 10,11 camphorsulfonic acid, 12,13 or dodecylbenzene sulfonic acid 14,15 are used to dope PANI. The resulting PANI, however, has limited solubility in common solvents so, while conductive, they are generally not solution-or melt-processable.…”

Section: Introductionmentioning

confidence: 99%

Improving the electrical conductivity of polymer acid-doped polyaniline by controlling the template molecular weight

et al. 2007

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We report the synthesis and characterization of a series of polyanilines (PANI) that are templated with a polymer acid at varying molecular weights. The polymer acid template of choice, poly(2-acrylamido-2-methyl-1-propanesulfonic acid), or PAAMPSA, was synthesized via conventional free-radical polymerization with molecular weights ranging from 45 kg mol 21 to 724 kg mol 21 . Subsequent aniline polymerization in the presence of PAAMPSA yielded waterdispersible, conductive PANI-PAAMPSA. The electrical conductivity of PANI-PAAMPSA increases by approximately three-fold with decreasing PAAMPSA molecular weight. This trend is accompanied by significant structural changes, including increases in PANI crystallinity and conjugation length. These conductivities (0.4-1.1 S cm 21 ) exceed the highest reported for polymer acid-doped PANI systems.

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The effect of co‐dopants on the processability of intrinsically conducting polymers

Cited by 8 publications

References 18 publications

Functional Freeform Fabrication for Physical Artificial Life

Functional Freeform Fabrication for Physical Artificial Life

Polypyrrole‐silk electro‐conductive composite fabric byin situchemical polymerization

Improving the electrical conductivity of polymer acid-doped polyaniline by controlling the template molecular weight

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