Doping-dependent energy transfer from conjugated polyelectrolytes to (6,5) single-walled carbon nanotubes

• Verfasst von: Leinen, Merve [VerfasserIn]
• Verfasst von: Berger, Felix J. [VerfasserIn]
• Verfasst von: Klein, Patrick [VerfasserIn]
• Verfasst von: Mühlinghaus, Markus [VerfasserIn]
• Verfasst von: Zorn, Nicolas [VerfasserIn]
• Verfasst von: Settele, Simon [VerfasserIn]
• Verfasst von: Allard, Sybille [VerfasserIn]
• Verfasst von: Scherf, Ullrich [VerfasserIn]
• Verfasst von: Zaumseil, Jana [VerfasserIn]
• Titel: Doping-dependent energy transfer from conjugated polyelectrolytes to (6,5) single-walled carbon nanotubes
• Verf.angabe: Merve Balci Leinen, Felix J. Berger, Patrick Klein, Markus Mühlinghaus, Nicolas F. Zorn, Simon Settele, Sybille Allard, Ullrich Scherf, and Jana Zaumseil
• E-Jahr: 2019
• Jahr: August 14, 2019
• Umfang: 10 S.
• Teil: volume:123
• Teil: year:2019
• Teil: number:36
• Teil: pages:22680-22689
• Teil: extent:10
• Fussnoten: Gesehen am 27.02.2020
• Titel Quelle: Enthalten in: The journal of physical chemistry <Washington, DC> / C
• Ort Quelle: Washington, DC : Soc., 2007
• Jahr Quelle: 2019
• Band/Heft Quelle: 123(2019), 36, Seite 22680-22689
• ISSN Quelle: 1932-7455
• DOI: doi:10.1021/acs.jpcc.9b07291
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1691165921

Abstract

Conjugated polymers exhibit strong interactions with single-walled carbon nanotubes (SWNTs). These enable the selective dispersion of specific semiconducting SWNTs in organic solvents and polymer-mediated energy transfer to the nanotubes followed by emission in the near-infrared. Conjugated polyelectrolytes with ionic side-chains can add further functionalities to these nanotube/polymer hybrids such as dispersibility in polar solvents (e.g., methanol) and self-doping. Here, we demonstrate and investigate energy transfer from a range of conjugated polymers to preselected (6,5) SWNTs with varying spectral overlap between the optical transitions of the polymer and nanotube. We find evidence for increased backbone planarization of the polymers wrapped around the nanotubes. Furthermore, ambient p-doping of hybrids of anionic conjugated polyelectrolytes and (6,5) SWNTs blocks energy transfer in contrast to cationic polyelectrolytes. By addition of a mild reducing agent, thus removing the p-doping, the energy transfer can be fully restored pointing toward an electron exchange mechanism. The p-doping of nanotube/polyelectrolyte hybrids in air and their doping-dependent emission and charge transport properties also become apparent in water-gated field-effect transistors based on such networks and might be useful for dual-signal sensing applications.