Journal ArticleDOI
Potential-Driven Conductivity of Polypyrroles, Poly-N-Alkylpyrroles, and Polythiophenes: Role of the Pyrrole NH Moiety in the Doping-Charge Dependence of Conductivity
Gianni Zotti,Sandro Zecchin,and Gilberto Schiavon,Barbara Vercelli,A. Berlin,Enrico Dalcanale,L. “Bert” Groenendaal +6 more
TLDR
In this article, the in situ conductivity vs p-doping charge of low-defect polypyrroles, N-substituted poly pyrrole, and polythiophenes has been investigated in acetonitrile in the presence of the weakly coordinating perchlorate ion as supporting electrolyte.Abstract:
The in situ conductivity vs p-doping charge of low-defect polypyrroles, N-substituted polypyrroles, and polythiophenes has been investigated in acetonitrile in the presence of the weakly coordinating perchlorate ion as supporting electrolyte. In-situ ESR and EQCM measurements have given supporting information on polymer structure and conduction carriers. The structures of the polymers cover a wide range of conjugative, geometrical, and solvation conditions, but the conductive pattern follows simply the polymer ring type (pyrrole, N-substituted pyrrole, or thiophene). In polythiophenes an initial region of low conductivity, due to strongly spin-dimerized polarons, is followed by an increase of conduction to a plateau of high conductivity. N-substituted polypyrroles display a linear increase of conductivity with charge followed by a plateau of conductivity. Polypyrroles without N-substitution show an increase of conductivity to a maximum followed by a symmetrical decrease to zero at a charge corresponding t...read more
Citations
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Journal ArticleDOI
Tunable metallic-like conductivity in microbial nanowire networks
Nikhil S. Malvankar,Madeline Vargas,Madeline Vargas,Kelly P. Nevin,Ashley E. Franks,Ching Leang,Byoung-Chan Kim,Byoung-Chan Kim,Kengo Inoue,Kengo Inoue,Tünde Mester,Tünde Mester,Sean F. Covalla,Sean F. Covalla,Jessica P Johnson,Jessica P Johnson,Vincent M. Rotello,Mark T. Tuominen,Derek R. Lovley +18 more
TL;DR: In this article, the authors showed that nanofilaments derived from natural amino acids can have metallic-like conductivity and showed that they can be used to construct a metallic conductivity network.
Journal ArticleDOI
Metal-Free Oxidative Cross-Coupling of Unfunctionalized Aromatic Compounds
TL;DR: A new strategy for mixed biaryl synthesis has been developed using the hypervalent iodine(III) reagents with unique reactivities for the unusual metal catalyst-free transformations and strict control of the product selectivities.
Journal ArticleDOI
New Low-Gap Polymers from 3,4-Ethylenedioxythiophene-Bis-Substituted Electron-Poor Thiophenes. The Roles of Thiophene, Donor−Acceptor Alternation, and Copolymerization in Intrinsic Conductivity
Anna Berlin,Gianni Zotti,Sandro Zecchin,and Gilberto Schiavon,Barbara Vercelli,Alberto Zanelli +5 more
TL;DR: In this paper, a low-gap thiophene-based regular copolymers are produced by anodic coupling of 3,4-ethylenedioxythiophene (2,5-substituted thieno[3,4b]pyrazine (TP), cyclopenta[2,1-b;3, 4-b]dithiophen-4-one (CO), and 4-dicyanomethylene-4H-cyclopenta(CN).
Journal ArticleDOI
Spatially Resolved Raman Spectroelectrochemistry of Solid-State Polythiophene/Viologen Memory Devices
Rajesh Kumar,Rajesh Kumar,Rajesh G. Pillai,Rajesh G. Pillai,Nikola Pekas,Yiliang Wu,Richard L. McCreery,Richard L. McCreery +7 more
TL;DR: The results definitively demonstrate concurrent redox reactions of both polythiophene and viologen in solid-state devices and correlate such reactions with device conductivity.
Journal ArticleDOI
Two-Component Polymeric Materials of Fullerenes and the Transition Metal Complexes: A Bridge between Metal–Organic Frameworks and Conducting Polymers
Alan L. Balch,Krzysztof Winkler +1 more
TL;DR: These insoluble, redox-active polymers have potential utility for the adsorption of various gases, for the construction of capacitors, for sensing, forThe preparation of metal-containing heterofullerenes, and for catalysis.
References
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Journal ArticleDOI
Poly(3,4‐ethylenedioxythiophene) and Its Derivatives: Past, Present, and Future
TL;DR: An overview of 3,4-ethylenedioxythiophene (PEDT) and its derivatives can be found in this article, along with a description of the broad array of properties accessible and a set of the more prominent applications in which they can be utilized.
Journal ArticleDOI
Regiocontrolled Synthesis of Poly(3-alkylthiophenes) Mediated by Rieke Zinc: Their Characterization and Solid-State Properties
Journal ArticleDOI
Poly(alkylenedioxythiophene)s—new, very stable conducting polymers
Gerhard Heywang,Friedrich Jonas +1 more
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Design, synthesis, and control of conducting polymer architectures: structurally homogeneous poly(3-alkylthiophenes)
TL;DR: In this paper, the full details of a facile synthesis of structurally homogeneous poly(3-alkylthiophene) (PAT's) is presented, in three steps from 3-bromothiophene, with complete regiochemical control.
Journal ArticleDOI
Self-orienting head-to-tail poly(3-alkylthiophenes): new insights on structure-property relationships in conducting polymers
Richard D. McCullough,Stephanie Tristram-Nagle,Shawn P. Williams,Renae D. Lowe,Manikandan Jayaraman +4 more
TL;DR: In this paper, it was shown that head to tail poly(3-alkylthiophene)s (PATs) undergo solid-state macromolecular self-assembly and give self-oriented structures, as determined by X-ray diffraction studies.