Photoluminescence Brightening of Isolated Single-Walled Carbon Nanotubes
Journal Article
·
· Journal of Physical Chemistry Letters
- Univ. of Rochester, NY (United States). Dept. of Chemistry; Univ of Rochester
- Univ. of Rochester, NY (United States). Dept. of Chemistry, Inst. of Optics
Addition of dithiothreitol (DTT) to a suspension consisting of either DNA or sodium dodecyl sulfate (SDS) wrapped single-walled carbon nanotubes (SWCNTs) caused significant photoluminescence (PL) brightening from the SWCNTs, while PL quenching to different extents was observed for other surfactant-SWCNT suspensions. PL lifetime studies with high temporal resolution show that addition of DTT mitigates non-radiative decay processes, but also surprisingly increases the radiative decay rate for DNA- and SDS-SWCNTs. There are completely opposite effects on the decay rates found for the other surfactant-SWCNTs and show PL quenching. Here, we propose that the PL brightening results from a surfactant reorganization upon DTT addition. TOC
- Research Organization:
- Univ. of Rochester, NY (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- Grant/Contract Number:
- FG02-06ER15821
- OSTI ID:
- 1394773
- Journal Information:
- Journal of Physical Chemistry Letters, Journal Name: Journal of Physical Chemistry Letters Journal Issue: 19 Vol. 8; ISSN 1948-7185
- Publisher:
- American Chemical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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