Pristine
Poly(para-phenylene): Relating Semiconducting Behavior
to Kinetics of Precursor Conversion
Version 3 2019-06-26, 00:43
Version 2 2019-06-19, 08:03
Version 1 2019-05-14, 14:34
Posted on 2019-06-26 - 00:43
We
investigated unsubstituted poly(para-phenylene) (PPP),
a long-desired prototype of a conjugated polymer semiconductor. PPP
was accessed via thermal aromatization of a precursor polymer bearing
kinked, solubility-inducing dimethoxycyclohexadienylene moieties.
IR spectroscopy and Vis ellipsometry studies revealed that the rate
of conversion of the precursor to PPP increases with temperature and
decreases with film density, indicating a process with high activation
volume. The obtained PPP films were analyzed in thin-film transistors
to gain insights into the interplay between the degree of conversion
and the resulting p-type semiconducting properties. The semiconducting
behavior of PPP was further unambiguously proven through IR and transistor
measurements of molybdenum trioxide p-doped films.
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Strunk, Karl-Philipp; Abdulkarim, Ali; Beck, Sebastian; Marszalek, Tomasz; Bernhardt, Jakob; Koser, Silke; et al. (2019). Pristine
Poly(para-phenylene): Relating Semiconducting Behavior
to Kinetics of Precursor Conversion. ACS Publications. Collection. https://doi.org/10.1021/acsami.9b03291
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AUTHORS (13)
KS
Karl-Philipp Strunk
AA
Ali Abdulkarim
SB
Sebastian Beck
TM
Tomasz Marszalek
JB
Jakob Bernhardt
SK
Silke Koser
WP
Wojciech Pisula
DJ
Daniel Jänsch
JF
Jan Freudenberg
AP
Annemarie Pucci
UH
Uwe H. F. Bunz
CM
Christian Melzer
KM
Klaus Müllen
KEYWORDS
PPP increasesp-type semiconducting propertiesmolybdenum trioxide p-doped filmsconversionsolubility-inducing dimethoxycyclohexadienylene moietiesprecursor polymerPrecursor ConversionIR spectroscopytransistor measurementssemiconducting behavioractivation volumefilm densityparagain insightslong-desired prototypePPP filmspolymer semiconductorphenylenePristine Polythin-film transistorsSemiconducting BehaviorVis ellipsometry studies