Excited-State Interaction of Semiconducting Single-Walled Carbon Nanotubes with Their Wrapping Polymers

Beitrag in einer Fachzeitschrift
(Originalarbeit)


Details zur Publikation

Autorinnen und Autoren: Kahmann S, Salazar Rios JM, Zink M, Allard S, Scherf U, Dos Santos MC, Brabec C, Loi MA
Zeitschrift: Journal of Physical Chemistry Letters
Verlag: American Chemical Society
Jahr der Veröffentlichung: 2017
Band: 8
Heftnummer: 22
Seitenbereich: 5666-5672
ISSN: 1948-7185
Sprache: Englisch


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 sample.


FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Brabec, Christoph Prof. Dr.
Lehrstuhl für Werkstoffwissenschaften (Materialien der Elektronik und der Energietechnologie)


Zusätzliche Organisationseinheit(en)
Graduiertenkolleg 1896/2 In situ Mikroskopie mit Elektronen, Röntgenstrahlen und Rastersonden
Interdisziplinäres Zentrum, Center for Nanoanalysis and Electron Microscopy (CENEM)


Einrichtungen weiterer Autorinnen und Autoren

Bergische Universität Wuppertal
University of Groningen / Rijksuniversiteit Groningen


Forschungsbereiche

Neue Materialien und Prozesse
Forschungsschwerpunkt einer Fakultät: Technische Fakultät


Zitierweisen

APA:
Kahmann, S., Salazar Rios, J.M., Zink, M., Allard, S., Scherf, U., Dos Santos, M.C.,... Loi, M.A. (2017). Excited-State Interaction of Semiconducting Single-Walled Carbon Nanotubes with Their Wrapping Polymers. Journal of Physical Chemistry Letters, 8(22), 5666-5672. https://dx.doi.org/10.1021/acs.jpclett.7b02553

MLA:
Kahmann, Simon, et al. "Excited-State Interaction of Semiconducting Single-Walled Carbon Nanotubes with Their Wrapping Polymers." Journal of Physical Chemistry Letters 8.22 (2017): 5666-5672.

BibTeX: 

Zuletzt aktualisiert 2019-23-08 um 09:26