Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Magnetic Resonance Characteristics of Negative Polarons in Neat Poly(3-hexyl-thiophene). / Borovkov, V. I.; Shchegoleva, L. N.
в: Journal of Physical Chemistry C, Том 123, № 46, 21.11.2019, стр. 28058-28065.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
}
TY - JOUR
T1 - Magnetic Resonance Characteristics of Negative Polarons in Neat Poly(3-hexyl-thiophene)
AU - Borovkov, V. I.
AU - Shchegoleva, L. N.
N1 - Publisher Copyright: Copyright © 2019 American Chemical Society. Copyright: Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2019/11/21
Y1 - 2019/11/21
N2 - Magnetic resonance characteristics of carriers of both electron spin and electric charge (polarons) in conjugated polymers are required for a deeper understanding of properties of these semiconducting materials. In poly(3-hexyl-thiophene), P3HT, which is an important material for photovoltaic applications, such information is available only for positive polarons, which are readily generated in the presence of electron acceptors via photoinduced processes. Influence of an external magnetic field on X-ray-induced delayed fluorescence from undoped P3HT and its solutions allowed us to visualize the spin interactions in the primary polaron pairs and to estimate the g-tensor components (g⊥ ≈ 2.0023, g|| ≈ 2.008) for the negative charge carriers in P3HT molecules. There is evidence that in neat regioregular P3HT, the g-tensor anisotropy for the polarons, migrating along polymer chains, is averaged partially because of irregularities in the polymer structure.
AB - Magnetic resonance characteristics of carriers of both electron spin and electric charge (polarons) in conjugated polymers are required for a deeper understanding of properties of these semiconducting materials. In poly(3-hexyl-thiophene), P3HT, which is an important material for photovoltaic applications, such information is available only for positive polarons, which are readily generated in the presence of electron acceptors via photoinduced processes. Influence of an external magnetic field on X-ray-induced delayed fluorescence from undoped P3HT and its solutions allowed us to visualize the spin interactions in the primary polaron pairs and to estimate the g-tensor components (g⊥ ≈ 2.0023, g|| ≈ 2.008) for the negative charge carriers in P3HT molecules. There is evidence that in neat regioregular P3HT, the g-tensor anisotropy for the polarons, migrating along polymer chains, is averaged partially because of irregularities in the polymer structure.
KW - ELECTRON-SPIN-RESONANCE
KW - MULTIFREQUENCY EPR
KW - RADICAL CATIONS
KW - POLY(3-HEXYLTHIOPHENE)
KW - ANISOTROPY
KW - DYNAMICS
KW - MOBILITY
KW - POLYMER
UR - http://www.scopus.com/inward/record.url?scp=85075048196&partnerID=8YFLogxK
U2 - 10.1021/acs.jpcc.9b08331
DO - 10.1021/acs.jpcc.9b08331
M3 - Article
AN - SCOPUS:85075048196
VL - 123
SP - 28058
EP - 28065
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
SN - 1932-7447
IS - 46
ER -
ID: 22336350