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

UTSA study describes new minimally invasive device to treat cancer and other illnesses: Medicine diffusion capsule could locally treat multiple ailments and diseases over several weeks December 3rd, 2016

Novel Electrode Structure Provides New Promise for Lithium-Sulfur Batteries December 3rd, 2016

Research Study: MetaSOLTM Shatters Solar Panel Efficiency Forecasts with Innovative New Coating: Coating Provides 1.2 Percent Absolute Enhancement to Triple Junction Solar Cells December 2nd, 2016

Deep insights from surface reactions: Researchers use Stampede supercomputer to study new chemical sensing methods, desalination and bacterial energy production December 2nd, 2016

Nanotubes/Buckyballs/Fullerenes

Novel Electrode Structure Provides New Promise for Lithium-Sulfur Batteries December 3rd, 2016

Cutting-edge nanotechnologies are breaking into industries November 18th, 2016

Hybrid nanostructures hold hydrogen well: Rice University scientists say boron nitride-graphene hybrid may be right for next-gen green cars October 25th, 2016

Self-healable battery Lithium ion battery for electronic textiles grows back together after breaking October 20th, 2016

Announcements

UTSA study describes new minimally invasive device to treat cancer and other illnesses: Medicine diffusion capsule could locally treat multiple ailments and diseases over several weeks December 3rd, 2016

Novel Electrode Structure Provides New Promise for Lithium-Sulfur Batteries December 3rd, 2016

Research Study: MetaSOLTM Shatters Solar Panel Efficiency Forecasts with Innovative New Coating: Coating Provides 1.2 Percent Absolute Enhancement to Triple Junction Solar Cells December 2nd, 2016

Deep insights from surface reactions: Researchers use Stampede supercomputer to study new chemical sensing methods, desalination and bacterial energy production December 2nd, 2016

Tools

Deep insights from surface reactions: Researchers use Stampede supercomputer to study new chemical sensing methods, desalination and bacterial energy production December 2nd, 2016

Controlled electron pulses November 30th, 2016

Scientists shrink electron gun to matchbox size: Terahertz technology has the potential to enable new applications November 25th, 2016

News from Quorum: The Agricultural Research Service of the USDA uses a Quorum Cryo-SEM preparation system for the study of mites, ticks and other soft bodied organisms November 22nd, 2016

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