Navigation Links
Chemists turn gold to purple -- on purpose
Date:1/26/2011

Professor Richard Watt and his chemistry students suspected that a common protein could potentially react with sunlight and harvest its energy similar to what chlorophyll does during photosynthesis.

The story of how they proved it sounds as colorful as the legend of the leprechaun who hid his pot of gold at the end of the rainbow.

They started with citric acid from oranges and mixed it with the protein. Next they dissolved gold powder into the solution. Then they put vials of the yellow-colored mixture in direct sunlight and crossed their fingers in the hope that it would turn purple.

Here's the reason why: If it turned purple, that would signal that the gold atoms had received electrons and used the donated energy to bunch together as small, purple-colored nanoparticles. And that would mean that the protein used the sunlight to excite the citric acid and trigger a transfer of energy.

While direct sunlight did the trick in about 20 minutes, a high-powered tungsten mercury lamp worked much faster.

"We set the system up, turned on the light, and the solution turned purple," Watt said. "We knew that we'd proved the concept."

The beauty of this experiment lies not in its colors unless, of course, you're thinking of it as a potential "green" energy source that keeps the environment clean.

The BYU researchers published their experiments in the Journal of Nanoparticle Research. The final step of this project will involve connecting the protein to an electrode to channel the energy into a battery or fuel cell. The BYU chemists will partner with Jae-Woo Kim of the National Institute of Aerospace for this next stage of the work.

Professor Watt's pedigree includes a post-doc at Princeton, a father who developed a fuel cell that runs on sugar and weed-killer and a more distant ancestor credited with inventing the first practical steam engine. That ancestor is also the Scottish engineer for whom the unit of power "watt" is named.


'/>"/>

Contact: Joe Hadfield
joe_hadfield@byu.edu
801-422-9206
Brigham Young University
Source:Eurekalert  

Related biology news :

1. Chemists document workings of key staph enzyme -- and how to block it
2. US launches International Year of Chemistry Feb. 1 with panel of world-renowned chemists
3. Chemists concoct new agents to easily study critical cell proteins
4. Team of chemists produces biodiesel at their university, using used cooking oil as a basis
5. Brown University chemists simplify biodiesel conversion
6. Scripps researchers, UCSD chemists to create center devoted to chemistrys influence on climate
7. Caltech chemists develop simple technique to visualize atomic-scale structures
8. DNA puts Stanford chemists on scent of better artificial nose
9. MIT chemists design new way to fluorescently label proteins
10. Colorado State University biochemists study how chromosomes unravel to let genes do their jobs
11. Chemists influence stem-cell development with geometry
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Chemists turn gold to purple -- on purpose
(Date:4/11/2017)... 11, 2017 Crossmatch®, a globally-recognized leader ... today announced that it has been awarded a ... Activity (IARPA) to develop next-generation Presentation Attack Detection ... "Innovation has been a driving force within Crossmatch ... allow us to innovate and develop new technologies ...
(Date:4/5/2017)... 5, 2017  The Allen Institute for Cell Science ... a one-of-a-kind portal and dynamic digital window into the ... the first application of deep learning to create predictive ... lines and a growing suite of powerful tools. The ... and future publicly available resources created and shared by ...
(Date:3/30/2017)... , March 30, 2017  On April 6-7, 2017, ... the Genome hackathon at Microsoft,s headquarters in ... competition will focus on developing health and wellness apps ... Hack the Genome is the first hackathon ... The world,s largest companies in the genomics, tech and ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... ... October 12, 2017 , ... BioMedGPS announces expanded coverage ... its newest module, US Hemostats & Sealants. , SmartTRAK’s US Market for Hemostats ... sealants, synthetic sealants and biologic sealants used in surgical applications. BioMedGPS estimates the ...
(Date:10/11/2017)... ... 11, 2017 , ... Personal eye wash is a basic first aid supply for any work ... which eye do you rinse first if a dangerous substance enters both eyes? It’s one ... with its unique dual eye piece. , “Whether its dirt and debris, or an ...
(Date:10/11/2017)... ... 2017 , ... Disappearing forests and increased emissions are the main causes of ... year. Especially those living in larger cities are affected by air pollution related diseases. ... most pollution-affected countries globally - decided to take action. , “I knew I had ...
(Date:10/10/2017)... , ... October 10, 2017 , ... ... Center’s FirstHand program has won a US2020 STEM Mentoring Award. Representatives of the ... for Excellence in Volunteer Experience from US2020. , US2020’s mission is to change ...
Breaking Biology Technology: