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:6/16/2016)... SAN FRANCISCO , June 16, 2016 /PRNewswire/ ... Market size is expected to reach USD ... report by Grand View Research, Inc. Technological proliferation ... and banking applications are expected to drive the ... ) , The development of ...
(Date:6/9/2016)... , June 9, 2016  Perkotek an innovation leader in attendance control systems ... seamlessly log work hours, for employers to make sure the right employees are actually ... http://photos.prnewswire.com/prnh/20160609/377486LOGO ... ... ...
(Date:6/7/2016)... -- Syngrafii Inc. and San Antonio Credit Union (SACU) ... Syngrafii,s patented LongPen™ eSignature "Wet" solution into SACU,s ... in greater convenience for SACU members and operational ... document workflow and compliance requirements. Logo ... Highlights: ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... ... June 27, 2016 , ... Newly created ... and solutions to the healthcare market. The company's primary focus is on new ... and marketing strategies that are necessary to help companies efficiently bring their products ...
(Date:6/24/2016)... 24, 2016 Epic Sciences unveiled a ... susceptible to PARP inhibitors by targeting homologous recombination ... The new test has already been incorporated into ... cancer types. Over 230 clinical trials ... pathways, including PARP, ATM, ATR, DNA-PK and WEE-1. ...
(Date:6/23/2016)... June 23, 2016   Boston Biomedical , ... compounds designed to target cancer stemness pathways, announced ... granted Orphan Drug Designation from the U.S. Food ... gastric cancer, including gastroesophageal junction (GEJ) cancer. Napabucasin ... to inhibit cancer stemness pathways by targeting STAT3, ...
(Date:6/23/2016)... 2016  The Prostate Cancer Foundation (PCF) is pleased to announce ... cures for prostate cancer. Members of the Class of 2016 were selected from ... Read More About the Class of 2016 PCF Young Investigators ... ... ...
Breaking Biology Technology: