Directly measured optical absorption cross sections for structure-selected single-walled carbon nanotubes

Jason K Streit; Sergei M Bachilo; Saunab Ghosh; Ching-Wei Lin; R Bruce Weisman

doi:10.1021/nl404791y

Directly measured optical absorption cross sections for structure-selected single-walled carbon nanotubes

Nano Lett. 2014 Mar 12;14(3):1530-6. doi: 10.1021/nl404791y. Epub 2014 Feb 10.

Authors

Jason K Streit¹, Sergei M Bachilo, Saunab Ghosh, Ching-Wei Lin, R Bruce Weisman

Affiliation

¹ Department of Chemistry and Richard E. Smalley Institute for Nanoscale Science and Technology, Rice University , 6100 Main Street, Houston, Texas 77005, United States.

PMID: 24502235
DOI: 10.1021/nl404791y

Abstract

We have measured peak and spectrally integrated absolute absorption cross sections for the first (E11) and second (E22) optical transitions of seven semiconducting single-walled carbon nanotube (SWCNT) species in bulk suspensions. Species-specific concentrations were determined using short-wave IR fluorescence microscopy to directly count SWCNTs in a known sample volume. Measured cross sections per atom are inversely related to nanotube diameter. E11 cross sections are larger for mod 1 species than for mod 2; the opposite is found for E22.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.