Absolute Quantification of sp³ Defects in Semiconducting Single-Wall Carbon Nanotubes by Raman Spectroscopy.

ABSTRACT: The functionalization of semiconducting single-wall carbon nanotubes (SWCNTs) with luminescent sp³ defects creates red-shifted emission features in the near-infrared and boosts their photoluminescence quantum yields (PLQYs). While multiple synthetic routes for the selective introduction of sp³ defects have been developed, a convenient metric to precisely quantify the number of defects on a SWCNT lattice is not available. Here, we present a direct and simple quantification protocol based on a linear correlation of the integrated Raman D/G⁺ signal ratios and defect densities as extracted from PLQY measurements. Corroborated by a statistical analysis of single-nanotube emission spectra at cryogenic temperature, this method enables the quantitative evaluation o

SUBMITTER: Sebastian FL 

PROVIDER: S-EPMC9059186 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature