> Columbia Main

Thank you for your interest in the chemistry department at Columbia University. Please follow the links at the left to learn about our degree programs, faculty, and research opportunities. You can view our Weekly Colloquium Schedule and Events Calendar by clicking here. To find phone numbers and e-mail addresses of faculty, students, and staff, just click on our Department Directory link. And, if you have questions after browsing these pages, please get in touch with us by following our “Contact Us” link.

"Mechanistic Chemistry of Tetravalent Iron in Aqueous Solutions"

Presented by Andreja Bakac, Iowa State University

 

For the past several years we have focused on the generation and chemistry of aqueous Fe(IV) ions.  In strongly acidic solutions the species is FeaqO2+ as established in spectroscopic and reactivity studies, and additionally supported by DFT calculations.  FeaqO2+ is a potent oxidant that reacts with organic and inorganic substrates by both one-electron and two-electron mechanisms.  Changes in the pH, solvent, or counter ions alter the nature of Fe(IV) which has major mechanistic implications for reactions generating and/or consuming Fe(IV).  Most notably, some one-electron stoichiometric oxidations with Fe(H2O)62+/H2O2 (Fenton reaction) can be transformed to two-electron catalytic oxidations by small changes in reaction conditions. 

Hosted by Jack Norton

Thursday, February 9, 2012

Meet the Speaker at 1:30pm in The Miller Seminar Room, 328 Havemeyer
Tea & Cookies at 4:00pm in The Miller Seminar Room, 328 Havemeyer
Seminar at 4:30 in The Brian Bent Memorial Lecture Hall, Room 209 Havemeyer

The Chemistry Department congratulates Professor Louis Brus, who has been named the 2012 winner of the Bower Science Award by the Franklin Institute.  One of science's highest honors, the Bower Award is bestowed yearly  on scientists "whose great innovation has benefited humanity, advanced science, launched new fields of inquiry, and deepened our understanding of the universe."

Bower Awards are made possible by a $7.5 million grant from the noted Philadelphia chemical engineer Henry Bower.  They are one of the most robust science prizes in the country, carrying a cash award of $250K.  Since their initiation in 1990, they have been awarded to scientists of almost every discipline.   Other notable chemists who have received the award are Paul C. Lauterbur, who is credited with the discovery of NMR imaging, and Henri B. Kagan, who discovered fundamental chemicals principles that explain catalytic behavior.

Professor Brus's research is in the physical chemistry of materials, interfaces, nanocrystals, and nanotubes, particularly with respect to optical and electronic properties. The work includes theoretical modeling, experimental chemical physics, and synthetic chemistry.  His research program seeks to create new materials with nanoscale structure by both kinetic and thermodynamic self-assembly methods. In the last several years, his group has has developed interests in metallic SWNT carbon nanotubes and in Ag nanocrystals as microscopic antennas for local electromagnetic field enhancement.

You can learn more about the Franklin Institute Awards on their .  Information about the work of Professor Brus's research group may be found on their .

 

 

 

Congratulations to Professor Tristan Lambert, who has been  selected as a 2011 Eli Lilly Grantee Award winner.  The Lilly Program recognizes "new professors based on their initial research impact and their future academic research potential."  There are typically just three award winners each year in the Lilly program.  In addition to presenting at the Lilly Grantee Symposium in 2014, Professor Lambert will receive a two year unrestricted research grant worth $100,000.  Previous Lilly Grantee Award winners in Columbia's chemistry department are Professor Scott Snyder in 2009 and Professor James Leighton in 1999.  You can learn more about Professor Lambert's research program on his group website.

 

 THE PADWA LECTURE

"Late-Stage Fluorination"

Presented by Tobias Ritter, Harvard University

Abstract: Transition metal-catalyzed and -mediated fluorination reactions will be discussed, as well as their application to positron emission tomography (PET) tracer synthesis.

Hosted by Tristan Lambert

Thursday, February 16, 2012

Meet the Speaker at 1:30pm in 328 Havemeyer
Tea & Cookies at 4:00pm in 328 Havemeyer
Seminar at 4:30 in 209 Havemeyer

Read entire announcement
Read entire announcement
Read entire announcement
Read entire announcement