skip to main content

DOE PAGESDOE PAGES

This content will become publicly available on September 22, 2018

Title: Photoluminescence Brightening of Isolated Single-Walled Carbon Nanotubes

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
Authors:
 [1] ; ORCiD logo [2]
  1. Univ. of Rochester, NY (United States). Dept. of Chemistry
  2. Univ. of Rochester, NY (United States). Dept. of Chemistry, Inst. of Optics
Publication Date:
Grant/Contract Number:
FG02-06ER15821
Type:
Accepted Manuscript
Journal Name:
Journal of Physical Chemistry Letters
Additional Journal Information:
Journal Volume: 8; Journal Issue: 19; Journal ID: ISSN 1948-7185
Publisher:
American Chemical Society
Research Org:
Univ. of Rochester, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 77 NANOSCIENCE AND NANOTECHNOLOGY
OSTI Identifier:
1394773