Active Fermi level Switching: Light mediated molecular Effect.
This week's seminar in chemistry presentation was given by Jacob W. Ciszek. Dr. Ciszek's presentation was titled: "Active Fermi Level Switching: Light Mediated Molecular Effect". He began by talking about Metal organic interfaces where this research could have an application in. These included Organic field effect transistors, organic light emitting diodes, and organic solar cells. Specifically, Dr. Ciszek's group is interested in the interfaces.
He went on to explain what happens to the molecules on exposure to light. When the molecule absorbs light, the molecule switches forms and effects the metal, usually made of a a gold plate. The self assembly that occurs before the absorbtion of light is very easy. Using the gold plate, the molecule can be spread out one molecule thick. Some of the advantages of this systems is: Photoisomerization, Dipole perpendicular to R2, and a large Dipole. Using IR and UV, the data then can be analyzed. UV is mostly used to measure the different absorbtions of the molecule when it is in the two forms of the switch.
Dr. Ciszek said alot about certain pathways, but in the end the conclusion was that this research has not been finished yet. He suspects that it will take many years before this research can be made applicable to our society.
In conlusion, the presentation was had some pros and cons. It was great seeing that there was new technology being developed, however I don't see it playing a very large role in various applications. Overall however, his presentation was interesting. Many of the other students also seemed to express interest, and many questions were asked during the Q/A session. I was particularly interested in the costs of the experiements as Gold plates where being used. During the Q/A session I found out that the Gold plates are very thin, therefore is not very expensive. However, when adding all the reagents/etc needed, he estimated that it costs about 80 dollars everytime the reaction takes place. I would love to see in the future where his research goes, and wish him and his team the best of luck.