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Spectroscopic insights into the influence of filling carbon nanotubes with atomic nanowires for photophysical and photochemical applications
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Hu, Ziyi, Breeze, Ben, Walker, Marc, Faulques, Eric, Sloan, Jeremy and Lloyd-Hughes, James (2023) Spectroscopic insights into the influence of filling carbon nanotubes with atomic nanowires for photophysical and photochemical applications. ACS Applied Nano Materials, 6 (4). pp. 2883-2893. doi:10.1021/acsanm.2c05266 ISSN 2574-0970.
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Official URL: https://doi.org/10.1021/acsanm.2c05266
Abstract
Studying the optical performance of carbon nanotubes (CNTs) filled with guest materials can reveal the fundamental photochemical nature of ultrathin one-dimensional (1D) nanosystems, which are attractive for applications including photocatalysis. Here, we report comprehensive spectroscopic studies of how infiltrated HgTe nanowires (NWs) alter the optical properties of small-diameter (d t < 1 nm) single-walled carbon nanotubes (SWCNTs) in different environments: isolated in solution, suspended in a gelatin matrix, and heavily bundled in network-like thin films. Temperature-dependent Raman and photoluminescence measurements revealed that the HgTe NW filling can alter the stiffness of SWCNTs and therefore modify their vibrational and optical modes. Results from optical absorption and X-ray photoelectron spectroscopy demonstrated that the semiconducting HgTe NWs did not provide substantial charge transfer to or from the SWCNTs. Transient absorption spectroscopy further highlighted that the filling-induced nanotube distortion can alter the temporal evolution of excitons and their transient spectra. In contrast to previous studies on functionalized CNTs, where electronic or chemical doping often drove changes to the optical spectra, we highlight structural distortion as playing an important role.
Item Type: | Journal Article | |||||||||
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Subjects: | Q Science > QC Physics T Technology > TA Engineering (General). Civil engineering (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | |||||||||
SWORD Depositor: | Library Publications Router | |||||||||
Library of Congress Subject Headings (LCSH): | Carbon nanotubes , Nanowires , Raman effect, X-ray photoelectron spectroscopy | |||||||||
Journal or Publication Title: | ACS Applied Nano Materials | |||||||||
Publisher: | ACS | |||||||||
ISSN: | 2574-0970 | |||||||||
Official Date: | 24 February 2023 | |||||||||
Dates: |
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Volume: | 6 | |||||||||
Number: | 4 | |||||||||
Page Range: | pp. 2883-2893 | |||||||||
DOI: | 10.1021/acsanm.2c05266 | |||||||||
Status: | Peer Reviewed | |||||||||
Publication Status: | Published | |||||||||
Access rights to Published version: | Open Access (Creative Commons) | |||||||||
Date of first compliant deposit: | 10 March 2023 | |||||||||
Date of first compliant Open Access: | 13 March 2023 | |||||||||
RIOXX Funder/Project Grant: |
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