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@article{faucris.119624384,
abstract = {ABSTRACT: We employ photoluminescence and pump−probe spectroscopy
on films of semiconducting single-walled carbon nanotubes (CNTs) of
different chirality wrapped with either a wide band gap polyfluorene derivative
(PF12) or a polythiophene with narrower gap (P3DDT) to elucidate the
excited states’ interplay between the two materials. Excitation above the
polymer band gap gives way to an ultrafast electron transfer from both
polymers toward the CNTs. By monitoring the hole polaron on the polymer
via its mid infrared signature, we show that also illumination below the
polymer band gap leads to the formation of this fingerprint and infer that holes
are also transferred toward the polymer. As this contradicts the standard way
of discussing the involved energy levels, we propose that polymer-wrapped
CNTs should be considered as a single hybrid system, exhibiting states shared
between the two components. This proposition is validated through quantum chemical calculations that show hybridization of
the first excited states, especially for the thiophene−CNT sampl},
author = {Kahmann, Simon and Salazar Rios, Jorge M. and Zink, Matthias and Allard, Sybille and Scherf, Ullrich and Dos Santos, Maria C. and Brabec, Christoph and Loi, Maria A.},
doi = {10.1021/acs.jpclett.7b02553},
faupublication = {yes},
journal = {Journal of Physical Chemistry Letters},
pages = {5666-5672},
peerreviewed = {Yes},
title = {{Excited}-{State} {Interaction} of {Semiconducting} {Single}-{Walled} {Carbon} {Nanotubes} with {Their} {Wrapping} {Polymers}},
volume = {8},
year = {2017}
}