Singlet Exciton Delocalization in Gold Nanoparticle-Tethered Poly(3-hexylthiophene) Nanofibers with Enhanced Intrachain Ordering

Dongki Lee, Dong Hun Sin, Sang Woo Kim, Hansol Lee, Hye Ryung Byun, Jungho Mun, Woong Sung, Boseok Kang, Dae Gun Kim, Hyomin Ko, Sung Won Song, Mun Seok Jeong, Junsuk Rho, Kilwon Cho

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

We fabricated hybrid poly(3-hexylthiophene) nanofibers (P3HT NFs) with rigid backbone organization through the self-assembly of P3HT tethered to gold NPs (P3HT-Au NPs) in an azeotropic mixture of tetrahydrofuran and chloroform. We found that the rigidity of the P3HT chains derives from the tethering of the P3HT chains to the Au NPs and the control of the solubility of P3HT in the solvent. This unique nanostructure of hybrid P3HT NFs self-assembled in an azeotropic mixture exhibits significantly increased delocalization of singlet (S1) excitons compared to those of pristine and hybrid P3HT NFs self-assembled in a poor solvent for P3HT. This strategy for the self-assembly of P3HT-Au NPs that generate long-lived S1 excitons can also be applied to other crystalline conjugated polymers and NPs in various solvents and thus enables improvements in the efficiency of optoelectronic devices.

Original languageEnglish
Pages (from-to)8487-8496
Number of pages10
JournalMacromolecules
Volume50
Issue number21
DOIs
Publication statusPublished - 2017 Nov 14

Bibliographical note

Publisher Copyright:
© 2017 American Chemical Society.

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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