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Efficient Inner-to-Outer Wall Energy Transfer in Highly Pure Double-Wall Carbon Nanotubes Revealed by Detailed Spectroscopy

Erkens, Maksiem; Levshov, Dmitry; Wenseleers, Wim ; Li, Han 1; Flavel, Benjamin S. 1; Fagan, Jeffrey A.; Popov, Valentin N.; Avramenko, Marina; Forel, Salomé; Flahaut, Emmanuel; Cambré, Sofie
1 Institut für Nanotechnologie (INT), Karlsruher Institut für Technologie (KIT)


The coaxial stacking of two single-wall carbon nanotubes (SWCNTs) into a double-wall carbon nanotube (DWCNT), forming a so-called one-dimensional van der Waals structure, leads to synergetic effects that dramatically affect the optical and electronic properties of both layers. In this work, we explore these effects in purified DWCNT samples by combining absorption, wavelength-dependent infrared fluorescence–excitation (PLE), and wavelength-dependent resonant Raman scattering (RRS) spectroscopy. Purified DWCNTs are obtained by careful solubilization that strictly avoids ultrasonication or by electronic-type sorting, both followed by a density gradient ultracentrifugation to remove unwanted SWCNTs that could obscure the DWCNT characterization. Chirality-dependent shifts of the radial breathing mode vibrational frequencies and transition energies of the inner and outer DWCNT walls with respect to their SWCNT analogues are determined by advanced two-dimensional fitting of RRS and PLE data of DWCNT and their reference SWCNT samples. This exhaustive data set verifies that fluorescence from the inner DWCNT walls of well-purified samples is severely quenched through efficient energy transfer from the inner to the outer DWCNT walls. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000151959
Veröffentlicht am 26.10.2022
DOI: 10.1021/acsnano.2c03883
Zitationen: 9
Zitationen: 9
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Nanotechnologie (INT)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 25.10.2022
Sprache Englisch
Identifikator ISSN: 1936-0851, 1936-086X
KITopen-ID: 1000151959
HGF-Programm 43.31.02 (POF IV, LK 01) Devices and Applications
Erschienen in ACS Nano
Verlag American Chemical Society (ACS)
Band 16
Heft 10
Seiten 16038–16053
Vorab online veröffentlicht am 27.09.2022
Schlagwörter double-wall carbon nanotubes, Raman spectroscopy, fluorescence-excitation spectroscopy, two-dimensional fitting, energy transfer, chirality assignment
Nachgewiesen in Dimensions
Web of Science
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