Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > Flash photolysis spectrometer helps with light harvesting research

Abstract:
Researchers at the University of Connecticut have been using the LP920 flash photolysis spectrometer from Edinburgh Instruments as part of their research into plant light harvesting complexes1. A paper has been published2 with collaborators at Kwansei Gakuin University examining the efficiency of variants of the Peridinin-Chlorophyll a-Protein (PCP) complex in providing photoprotection from singlet oxygen formation. PCP's highly effective protective capacity against these photodynamic reactions is extremely important since singlet oxygen can directly provoke cellular damage in plants by rapidly oxidizing cellular components.

Flash photolysis spectrometer helps with light harvesting research

Livingston, UK | Posted on December 6th, 2012

The LP920 was used to record transient triplet-minus-singlet absorption spectra of chlorophyll a with different peridinin molecular analogs in polar and non-polar solvents, allowing the dynamics of the reactions to be investigated. Although the results showed that the spectral bands are shifted depending on the molecular analog used, the dynamics of triplet state decay remain very similar for each analog meaning that there is no marked difference between them in terms of their ability to protect against singlet oxygen formation.

The LP920 is a computer-controlled, fully automated flash photolysis spectrometer, equipped with a large sample chamber to house a variety of sample holders. Excitation pulses at 660 -670 nm for these experiments were provided using an Nd:YAG-pumped laser light source. A pulsed, high-intensity 450 W Xenon lamp was used for the transient absorption spectral measurements.

1 Light harvesting complexes consist of proteins and photosynthetic pigments that surround a photosynthetic reaction centre and collect more of the incoming light than would be captured by this centre alone.

2 S. Kaligotla, S. Doyle, D. M. Niedzwiedzki, S. Hasegawa, T. Kajikawa, S. Katsumura & H. A. Frank, Photosynth. Res (2010) 103; 167-174

####

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 Ltd
2 Bain Square, Kirkton Campus
Livingston, EH54 7DQ, UK
Tel: + 44 1506 425 300

Copyright © Edinburgh Instruments

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

Bringing the atomic world into full color: Researchers turn atomic force microscope measurements into color images October 19th, 2017

'Find the Lady' in the quantum world: International team of researchers presents method for quantum-mechanical swapping of positions October 18th, 2017

Long nanotubes make strong fibers: Rice University researchers advance characterization, purification of nanotube wires and films October 17th, 2017

Spinning strands hint at folding dynamics: Rice University lab uses magnetic beads to model microscopic proteins, polymers October 17th, 2017

Announcements

Bringing the atomic world into full color: Researchers turn atomic force microscope measurements into color images October 19th, 2017

Long nanotubes make strong fibers: Rice University researchers advance characterization, purification of nanotube wires and films October 17th, 2017

Spinning strands hint at folding dynamics: Rice University lab uses magnetic beads to model microscopic proteins, polymers October 17th, 2017

Rice U. study: Vibrating nanoparticles interact: Placing nanodisks in groups can change their vibrational frequencies October 16th, 2017

Tools

Bringing the atomic world into full color: Researchers turn atomic force microscope measurements into color images October 19th, 2017

Nanometrics Announces Preliminary Results for the Third Quarter of 2017: Quarterly Results Impacted by Delays in Revenue Recognition on Multiple Systems into Japan October 12th, 2017

Seeing the next dimension of computer chips: Researchers image perfectly smooth side-surfaces of 3-D silicon crystals with a scanning tunneling microscope, paving the way for smaller and faster computing devices October 11th, 2017

Quorum announces new customer support and demonstration facilities for users worldwide October 10th, 2017

Photonics/Optics/Lasers

Rice U. study: Vibrating nanoparticles interact: Placing nanodisks in groups can change their vibrational frequencies October 16th, 2017

Injecting electrons jolts 2-D structure into new atomic pattern: Berkeley Lab study is first to show potential of energy-efficient next-gen electronic memory October 13th, 2017

Single ‘solitons’ promising for optical technologies October 9th, 2017

A dash of gold improves microlasers: The precious metal provides a 'nano' solution for improving disease detection, defense and cybersecurity applications October 9th, 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