Online citations, reference lists, and bibliographies.
← Back to Search

Role Of The Dopant Counter-ions In The Transport And Magnetic Properties Of Disordered Conducting Polymers

L. Zuppiroli
Published 1994 · Materials Science

Save to my Library
Download PDF
Analyze on Scholarcy
Share
Summary form only given. Disordered conducting polymers like polypyrroles or even some of the polyanilines contain generally short electroactive chains with conjugation lengths of a few ten monomers. Most of the electronic properties of these materials cannot be really understood in terms of quasi-one-dimensional models. i) Why in the fully doped materials the number of Curie spins is always lower than half the number of segments? ii) Why these disordered materials exhibit a Pauli-like component in their spin- susceptibility? iii) Why are the conductivities of all the fully doped materials roughly of the same order of magnitude (0.1 to 10 S/cm) independent of the micro structures and chain lengths? iv) Why the same value of the conductivity is found in thin films of doped oligomers? All these questions can be resolved if the interactions between the carriers and the dopant counter-ions are properly accounted for. It is then possible to derive a new interpretation of the spin-charge relation and of the so-called Curie and Pauli contributions to the susceptibility. Moreover the dopant ion is ultimately responsible for 3D localization through formation of transverse bipolarons connecting neighbour chains via enhanced tunnelling probability close to a counter-ion. Thus the hopping process through the disordered material can be revisited in relation with these new concepts.
This paper references



This paper is referenced by
10.1016/0009-2614(96)00605-7
LITHIUM- AND CHLORINE-DOPED BIPHENYL DIMERS AS MODELS FOR INTERCHAIN POLARONS AND BIPOLARONS : A DENSITY FUNCTIONAL STUDY
S. Irle (1996)
10.1002/IJCH.201100091
Organic Small Molecules for Photonics and Electronics from the [2.2]Paracyclophane Scaffold
A. Marrocchi (2012)
10.1039/C7RA02535A
Understanding the colorimetric properties of quinoxaline-based pi-conjugated copolymers by tuning their acceptor strength: a joint theoretical and experimental approach
Sébastien Fagour (2017)
10.1016/S0379-6779(99)00262-3
2-mm Waveband electron paramagnetic resonance spectroscopy of conducting polymers
V. I. Krinichnyi (2000)
10.1016/j.synthmet.2020.116462
Effects of small-molecule-doping on spin-assisted processes in P3DDT:PC61BM photovoltaics
V. I. Krinichnyi (2020)
10.1007/BF02494663
The nature and dynamics of nonlinear excitations in conducting polymers. Polyaniline
V. Krinichnyi (2000)
Dynamics of spin charge carriers in polyaniline
V. I. Krinichnyia (2016)
10.1063/1.1465408
Influence of dopant on the electronic structure of spiro-oligophenyl-based disordered organic semiconductors
A. Crispin (2002)
Electrical Transport and Magnetoresistance of Doped Polypyrrole
T. Fahmy (2015)
10.1070/RC1996V065N01ABEH000200
The nature and dynamics of nonlinear excitations in conducting polymers. Polyacetylene
V. Krinichnyi (1996)
10.1063/1.4873329
Dynamics of spin charge carriers in polyaniline
V. I. Krinichnyi (2014)
Vers une métrologie olfactive de la qualité de l'air intérieur. Correspondances entre les données de l'analyse sensorielle, de l'analyse chimique et d'un "nez électronique".
O. Ramalho (1999)
10.1016/S1388-2481(01)00124-2
Synthesis and electrochemical polymerization of bis-dithienyl cyclophane
L. Guyard (2001)
10.1039/A608365J
Chemical deposition of ordered conducting polypyrrole films on modified inorganic substrates
Chun-Guey Wu (1997)
10.1088/0953-8984/10/25/011
Dielectric response analysis of a conducting polymer dominated by the hopping charge transport
S. Capaccioli (1998)
Semantic Scholar Logo Some data provided by SemanticScholar