Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > Edinburgh Instruments’ Spectrometer Helps Identify New Electronic State In Carbon Nanotube Research

Abstract:
Researchers at Duke University1 have utilised the LP920 laser flash photolysis spectrometer from Edinburgh Instruments to experimentally observe excited triplet states of individualised single-wall carbon nanotubes (SWNTs) for the first time. These SWNT triplet excitons have lifetimes of the order of microseconds, differing vastly the picosecond lifetimes characteristic of the well-known SWNT singlet excitons. This research provides new insights into the fundamental photophysical processes of 1-dimensional carbon-based nanostructures.

Edinburgh Instruments’ Spectrometer Helps Identify New Electronic State In Carbon Nanotube Research

Livingston, UK | Posted on March 8th, 2012

SWNTs facilitate ballistic charge transport and fast singlet exciton migration over long distances; such properties are highly useful for electronic and photonic devices. The experimental identification of the SWNT triplet exciton state expands significantly the scope of nanotube electron and energy migration reactions that can be exploited.

Nanosecond pump-probe transient absorption spectroscopic experiments of purified, polymer wrapped SWNTs in a variety of solvents was carried out using the LP920 laser flash photolysis spectrometer equipped with the L900 software for control and data acquisition. A previously unidentified transient absorption band at 1150 nm is shown to correspond to a SWNT T1 to Tn transition; the lifetime of the SWNT triplet excited state was found to be 17.4 and 6.5 µs, respectively, in D2O and DMSO solvents.

In this study, (6,5)-chirality enriched semiconducting SWNTs that were helically wrapped by an aryleneethynylene polymer monolayer at periodic and constant morphology, were utilised. These polymer-wrapped SWNTs maintain uniform structural morphology in both D2O and DMSO solvents, and provide versatile constructs in which to probe nanotube triplet exciton states.

The LP920 laser flash photolysis spectrometer is a fully automated turnkey solution for the reliable and accurate measurement of transient absorption either in spectral and/or kinetic mode. It has a large sample chamber to house a variety of sample holders.

####

For more information, please click here

Contacts:
Press Enquiries:
In Press Public Relations Ltd
PO Box 24
Royston, Herts, SG8 6TT
Tel: +44 1763 262621

Internet: www.inpress.co.uk

Other Enquiries:
Edinburgh Instruments
Photonics Division
2 Bain Square, Kirkton Campus
Livingston, EH54 7DQ, UK
Tel: + 44 1506 425 300

Internet: www.edinburghphotonics.com

Copyright © Edinburgh Instruments Ltd.

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

The power of perovskite: OIST researchers improve perovskite-based technology in the entire energy cycle, from solar cells harnessing power to LED diodes to light the screens of future electronic devices and other lighting applications August 18th, 2017

Gold nanostars and immunotherapy vaccinate mice against cancer: New treatment cures, vaccinates mouse in small proof-of-concept study August 18th, 2017

Researchers printed graphene-like materials with inkjet August 17th, 2017

Candy cane supercapacitor could enable fast charging of mobile phones August 17th, 2017

Nanotubes/Buckyballs/Fullerenes/Nanorods

Regulation of two-dimensional nanomaterials: New driving force for lithium-ion batteries July 26th, 2017

Killing cancer in the heat of the moment: A new method efficiently transfers genes into cells, then activates them with light. This could lead to gene therapies for cancers July 9th, 2017

Tests show no nanotubes released during utilisation of nanoaugmented materials June 9th, 2017

Ag/ZnO-Nanorods Schottky diodes based UV-PDs are fabricated and tested May 26th, 2017

Announcements

The power of perovskite: OIST researchers improve perovskite-based technology in the entire energy cycle, from solar cells harnessing power to LED diodes to light the screens of future electronic devices and other lighting applications August 18th, 2017

Gold nanostars and immunotherapy vaccinate mice against cancer: New treatment cures, vaccinates mouse in small proof-of-concept study August 18th, 2017

Researchers printed graphene-like materials with inkjet August 17th, 2017

Candy cane supercapacitor could enable fast charging of mobile phones August 17th, 2017

Tools

Scientists from the University of Manchester and Diamond Light Source work with Deben to develop and test a new compression stage to study irradiated graphite at elevated temperatures August 15th, 2017

FRITSCH • Milling and Sizing! Innovations at POWTECH 2017 - Hall 2 • Stand 227 August 9th, 2017

New Quattro Field Emission ESEM Emphasizes Versatility and Ease of Use: Thermo Scientific Quattro ESEM allows materials science researchers to study nanoscale structure in almost any material under a range of environmental conditions August 8th, 2017

Thermo Fisher Scientific’s New Talos F200i S/TEM Delivers Flexible, High-Performance Imaging: New compact S/TEM can be configured to meet specific imaging and analytical requirements for materials characterization in research laboratories August 8th, 2017

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project