Reversible Charge Transfer with Single-Walled Carbon Nanotubes Upon Harvesting the Low Energy Part of the Solar Spectrum

Menon A, Slominskii YL, Joseph J, Dimitriev OP, Guldi DM (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Small Wiley-VCH Verlag

DOI: 10.1002/smll.201906745

Abstract

Here, the ability of a novel near-infrared dye to noncovalently self-assemble onto the surface of single-walled carbon nanotubes (SWCNTs) driven by charge-transfer interactions is demonstrated. Steady-state, Raman, and transient absorption spectroscopies corroborate the electron donating character of the near-infrared dye when combined with SWCNTs, in the form of fluorescence quenching of the excited state of the dye, n-doping of SWCNTs, and reversible charge transfer, respectively. Formation of the one-electron oxidized dye as a result of interactions with SWCNTs is supported by spectroelectrochemical measurements. The ultrafast electronic process in the near-infrared dye, once immobilized onto SWCNTs, starts with the formation of excited states, which decay to the ground state via the intermediate population of a fully charge-separated state, with characteristic time constants for the charge separation of 1.5 ps and charge recombination of 25 ps, as derived from the multiwavelength global analysis. Of great relevance is the fact that charge-transfer occurs from the hot excited state of the near-infrared dye to SWCNTs.

Authors with CRIS profile

Arjun Menon Lehrstuhl für Physikalische Chemie I Jan Joseph Lehrstuhl für Physikalische Chemie I Dirk Michael Guldi Lehrstuhl für Physikalische Chemie I

Involved external institutions

National Academy of Sciences of Ukraine (NAN) / Національна академія наук України UA Ukraine (UA)

How to cite

APA:

Menon, A., Slominskii, Y.L., Joseph, J., Dimitriev, O.P., & Guldi, D.M. (2020). Reversible Charge Transfer with Single-Walled Carbon Nanotubes Upon Harvesting the Low Energy Part of the Solar Spectrum. Small. https://dx.doi.org/10.1002/smll.201906745

MLA:

Menon, Arjun, et al. "Reversible Charge Transfer with Single-Walled Carbon Nanotubes Upon Harvesting the Low Energy Part of the Solar Spectrum." Small (2020).

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