Femtochemistry is the science that studies chemical reactions on extremely short timescales, approximately 10–15 seconds (this is one femtosecond, hence the name). Part of a scientific laboratory at the University of Cologne. ... Vapours of hydrogen chloride in a beaker and ammonia in a test tube meet to form a cloud of a new substance, ammonium chloride A chemical reaction is a process that results in the interconversion of chemical substances. ... To help compare orders of magnitude of different times this page lists times between 10−15 seconds and 10−12 seconds (1 femtosecond and 1 picosecond). ... A femtosecond is the SI unit of time equal to 10-15 of a second. ...
In 1999, Ahmed H. Zewail received the Nobel Prize in Chemistry for his pioneering work in this field. 1999 (MCMXCIX) was a common year starting on Friday, and was designated the International Year of Older Persons by the United Nations. ... Ahmed Zewail Ahmed Hassan Zewail (Arabic: Ø£Øمد زويل) (born February 26, 1946) is an Egyptian American chemist, and the winner of the 1999 Nobel Prize in Chemistry for his work on femtochemistry. ... This is a list of Nobel Prize laureates in Chemistry from 1901 to 2006. ...
Zewail’s technique uses flashes of laser light that last for a few femtoseconds. Femtochemisty is the area of physical chemistry that addresses the short time period in which chemical reactions take place and investigates why some reactions occur but not others. Zewail’s picture-taking technique made possible these investigations. One of the first major discoveries of femtochemistry was that intermediate products that form during chemical reactions differ from the starting and end products. By understanding these molecular dynamics, chemists one day may be able to better control chemical reactions and create new molecules. A femtosecond is the SI unit of time equal to 10-15 of a second. ...
External links
The 1999 Nobel Prize in Chemistry, article on nobelprize.org
seconds (this is one femtosecond, hence the name).
One femtosecond equals one millionth of one billionth of a second (0.000000000000001 second).
Femtochemisty is the area of physical chemistry that addresses the short time period in which chemical reactions take place and investigates why some reactions occur but not others.
One femtosecond is to one minute as one minute is to the age of the universe.).
Using one femtosecond laser pulse as a starter's pistol, a second laser pulse, delayed in time, is used to clock the chemical reaction as it occurs.
"Femtosecondchemistry" says Dr. Albert Stolow of the NRC Steacie Institute for Molecular Sciences, "is about the ability to observe chemical reactions in 'real time' – as the atoms and electrons rearrange during the reaction.
Feeds |
Contact