Nitrogen Doping of Confined Carbyne

Author(s)
Clara Freytag, Christin Schuster, Weili Cui, Nikos Tagmatarchis, Rubén Cantón-Vitoria, Lei Shi, Emil Parth, Kazuhiro Yanagi, Paola Ayala, Thomas Pichler
Abstract

Low-dimensional carbon allotropes belong to the most revolutionary materials of the most recent decades. Confined carbyne, a linear chain of sp1-hybridized carbon encapsulated inside a small-diameter carbon nanotube host, is one extraordinary nanoengineering example. Inspired by these hybrid structures, we demonstrate the feasibility to synthesize nitrogen-doped confined carbyne by using azafullerenes (C59N) encapsulated in nanotubes (“peapods”) as precursors for the growth of confined carbyne. Resonance Raman spectroscopy as a site selective local probe has served to identify the changes in the spectra of nitrogen-doped versus pristine carbon peapods and confined carbyne. We are able to disentangle frequency changes due to charge transfer from changes due to the difference in mass for both the nanotube and the carbyne, where different effects dominate. This study demonstrates a suitable pathway to achieve controlled doping of carbyne chains via the use of specifically doped precursors.

Organisation(s)
Electronic Properties of Materials
External organisation(s)
Sun Yat-sen University, National Hellenic Research Foundation, Tokyo Metropolitan University
Journal
Journal of Physical Chemistry Letters
Volume
16
Pages
4990-4994
No. of pages
5
ISSN
1948-7185
DOI
https://doi.org/10.1021/acs.jpclett.5c01063
Publication date
05-2025
Peer reviewed
Yes
Austrian Fields of Science 2012
103018 Materials physics, 104017 Physical chemistry
ASJC Scopus subject areas
General Materials Science, Physical and Theoretical Chemistry
Portal url
https://ucrisportal.univie.ac.at/en/publications/ff3e72d5-2a12-411e-b4f1-4c717e61c7c7