Tailoring the Properties of Single-Wall Carbon Nanotube Samples through Structure-Selective Near-Infrared Photochemistry

The Journal of Physical Chemistry Letters
Yu ZhengR Bruce Weisman

Abstract

As-produced samples of single-wall carbon nanotubes (SWCNTs) contain many structural forms with characteristic properties. In particular, semiconducting SWCNTs display distinct near-IR optical absorption and emission peaks. We show that the selective irradiation of these absorption features can induce structure-specific functionalization in unsorted SWCNT samples. This approach is demonstrated with an ambient temperature photoreaction involving dissolved O2 and irradiation at 955, 985, and 1130 nm, causing preferential covalent reactions of (8,3), (6,5), and (7,6) SWCNTs, respectively. Treated samples showed permanent fluorescence quenching and absorption bleaching near the irradiation wavelength and an increase in the Raman D/G intensity ratio, indicating the formation of covalent defects. The reaction has a very low photochemical quantum yield and was observed for samples suspended in single-stranded DNA and in conventional surfactants that gave incomplete coverage of the nanotube surface. The approach of exploiting sharp nanotube near-IR transitions for structure-selective photochemistry provides a path to tailor SWCNT optical properties for several potential applications without the need for physical sorting.

References

Jul 27, 2002·Science·Michael J O'ConnellRichard E Smalley
Dec 3, 2002·Science·Sergei M BachiloR Bruce Weisman
Apr 15, 2003·Nature Materials·Ming ZhengNancy G Tassi
Dec 31, 2005·Physical Review Letters·Axel HagenAchim Hartschuh
Jan 18, 2007·Journal of the American Chemical Society·Zhi-Bin Zhang, Shi-Li Zhang
Jul 26, 2008·Nature Nanotechnology·Michael S ArnoldMark C Hersam
Oct 2, 2008·Journal of the American Chemical Society·Noe T AlvarezJames M Tour
Dec 5, 2008·Journal of the American Chemical Society·Dmitri A TsyboulskiR Bruce Weisman
Apr 5, 2013·Journal of the American Chemical Society·Yutaka MaedaTakeshi Akasaka
Dec 13, 2016·Journal of the American Chemical Society·Geyou AoMing Zheng
Mar 16, 2017·Journal of the American Chemical Society·Cheuk Fai ChiuAlexander Star
Aug 29, 2017·Journal of the American Chemical Society·Lyndsey R PowellYuHuang Wang
Jun 26, 2018·The Journal of Physical Chemistry Letters·Yu ZhengR Bruce Weisman
Jun 30, 2019·Nature Communications·Ching-Wei LinAngela M Belcher

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