Ground State Host-Guest Interactions upon Effective Dispersion of Regioregular Poly(3-hexylthiophene) in Poly(9,9-dioctylfluorene-alt-benzothiadiazole)

Wu, Longfei and Casado Rojo, Santiago and Romero Herrero, Beatriz and Otón Sánchez, José Manuel and Morgado, Jorge and Müller, Christian and Xia, Ruidong and Cabanillas González, Juan (2015). Ground State Host-Guest Interactions upon Effective Dispersion of Regioregular Poly(3-hexylthiophene) in Poly(9,9-dioctylfluorene-alt-benzothiadiazole). "Macromolecules", v. 48 ; pp. 8765-8772. ISSN 0024-9297. https://doi.org/10.1021/acs.macromol.5b02111.

Description

Title: Ground State Host-Guest Interactions upon Effective Dispersion of Regioregular Poly(3-hexylthiophene) in Poly(9,9-dioctylfluorene-alt-benzothiadiazole)
Author/s:
  • Wu, Longfei
  • Casado Rojo, Santiago
  • Romero Herrero, Beatriz
  • Otón Sánchez, José Manuel
  • Morgado, Jorge
  • Müller, Christian
  • Xia, Ruidong
  • Cabanillas González, Juan
Item Type: Article
Título de Revista/Publicación: Macromolecules
Date: December 2015
ISSN: 0024-9297
Volume: 48
Subjects:
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Otro
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Regioregular poly(3-hexylthiophene), (rr-P3HT), is widely regarded as an archetypical semiconducting electron-donor polymer in bulk heterojunction solar cells, mainly due to its notable exciton and charge transport properties. Conversely, its use in photonic/lighting devices received little interest owing to its low emission quantum yield in the solid state, related to its large tendency to self-organize into lamellar domains with highly nonemissive character. We present experimental evidence pointing to a large miscibility of P3HT in poly(9,9-dioctylfluorene-alt-benzothiadiazole) (F8BT), accompanied by mutual ?-? interactions. Concomitant to this effect, the emission properties of P3HT:F8BT blends, which are attributed to heterogeneous interchain complexes, experience a significant improvement, with photoluminescence quantum efficiency (PLQE) values approaching 25% (almost a 7-fold efficiency enhancement with respect to neat/aggregated rr-P3HT). Our results open up new prospects for improved photonic properties through appropriate control of interchain interactions.

More information

Item ID: 48707
DC Identifier: http://oa.upm.es/48707/
OAI Identifier: oai:oa.upm.es:48707
DOI: 10.1021/acs.macromol.5b02111
Official URL: https://pubs.acs.org/doi/10.1021/acs.macromol.5b02111
Deposited by: Memoria Investigacion
Deposited on: 06 Feb 2018 17:18
Last Modified: 06 Feb 2018 17:18
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