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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Seddon, Annela M.
University of Bristol
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (6/6 displayed)
- 2022Scale-Invariance in Miniature Coarse-Grained Red Blood Cells by Fluctuation Analysiscitations
- 2019Bénard-Marangoni Dendrites upon Evaporation of a Reactive ZnO Nanofluid Dropletcitations
- 2018Structure of the Crystalline Core of Fiber-like Polythiophene Block Copolymer Micellescitations
- 2015Self-assembly of a functional oligo(aniline)-based amphiphile into helical conductive nanowirescitations
- 2014Experimental confirmation of transformation pathways between inverse double diamond and gyroid cubic phasescitations
- 2007Bio-functional mesolamellar nanocomposites based on inorganic/polymer intercalation in purple membrane (bacteriorhodopsin) filmscitations
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article
Self-assembly of a functional oligo(aniline)-based amphiphile into helical conductive nanowires
Abstract
A tetra(aniline)-based cationic amphiphile, TANI-NHC(O)C<sub>5</sub>H<sub>10</sub>N(CH<sub>3</sub>)<sub>3</sub><sup>+</sup>Br<sup>–</sup>(TANI-PTAB) was synthesized, and its emeraldine base (EB) state wasfound to self-assemble into nanowires in aqueous solution. The observedself-assembly is described by an isodesmic model, as shown bytemperature-dependent UV–vis investigations. Linear dichroism (LD)studies, combined with computational modeling using time-dependentdensity functional theory (TD-DFT), suggests that TANI-PTAB moleculesare ordered in an antiparallel arrangement within nanowires, with thelong axis of TANI-PTAB arranged perpendicular to the nanowire long axis.Addition of either <i>S</i>- or <i>R</i>- camphorsulfonic acid (CSA) toTANI-PTAB converted TANI to the emeraldine salt (ES), which retainedthe ability to form nanowires. Acid doping of TANI-PTAB had a profoundeffect on the nanowire morphology, as the CSA counterions’ chiralitytranslated into helical twisting of the nanowires, as observed bycircular dichroism (CD). Finally, the electrical conductivity ofCSA-doped helical nanowire thin films processed from aqueous solutionwas 2.7 mS cm<sup>–1</sup>. The conductivity, control overself-assembled 1D structure and water-solubility demonstrate thesematerials’ promise as processable and addressable functional materialsfor molecular electronics, redox-controlled materials and sensing.