MC 3125

work:+1 212-854-4041

leb26@columbia.edu

Research Summary

Our research is in the physical chemistry of materials, interfaces, nanocrystals, and nanotubes, especially in relation to optical and electronic properties. This work can include theoretical modeling, experimental chemical physics, and synthetic chemistry. We try to understand the size evolution of solid-state properties from molecular properties. We also seek to create new materials with nanoscale structure by both kinetic and thermodynamic self-assembly methods. We specialize in Electric Force Microscopy and Laser Optical Microscopy for observation of single nano-objects. In the last several years, we have developed interests in metallic SWNT carbon nanotubes, and in Ag nanocrystals as microscopic antennas for local electromagnetic field enhancement.

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High-Resolution Scanning Tunneling Microscopy Imaging of Mesoscopic Graphene Sheets on an Insulating Surface, Elena Stolyarova (Polyakova), Kwang Taeg Rim, Sunmin Ryu, Janina Maultzsch, Philip Kim, Louis E. Brus, Tony F. Heinz, Mark S. Hybertsen, and George W. Flynn, PNAS 104, 9209 (2007)

Photovoltage and Photocatalyzed Growth in Citrate-Stabilized Colloidal Silver Nanocrystals, Peter L. Redmond, Xiaomu Wu, and Louis Brus, J. Phys. Chem. C ASAP (2007)

Multiphonon Raman Scattering from Individual Single-Walled Carbon Nanotubes, Feng Wang, Weitao Liu, Yang Wu, Matthew Y. Sfeir, Limin Huang, James Hone, Stephen O’Brien, Louis E. Brus, Tony F. Heinz, and Y. Ron Shen, PRL 98, 047402 (2007)

Photoinduced Thermal Copper Reduction onto Gold Nanocrystals under Potentiostatic Control, Peter L. Redmond, Erich C. Walter, and Louis E. Brus, J. Phys. Chem. B 110, 25158 (2006)

Crystalline Graphite from an Organometallic Solution-Phase Reaction Erich C. Walter, Tobias Beetz, Matthew Y. Sfeir, Louis E. Brus, and Michael L. Steigerwald, J. Am. Chem. Soc. 128, 15590 (2006)

Optical Spectroscopy of Individual Single-Walled Carbon Nanotubes of Defined Chiral Structure, Matthew Y. Sfeir, Tobias Beetz, Feng Wang, Limin Huang, X. M. Henry Huang, Mingyuan Huang, J. Hone, Stephen O’Brien, J. A. Misewich, Tony F. Heinz, Lijun Wu, Yimei Zhu, Louis E. Brus, Science 312, 554 (2006)

Racemic Single-Walled Carbon Nanotubes Exhibit Circular Dichroism When Wrapped with DNA, Gordana Dukovic, Milan Balaz, Peter Doak, Nina D. Berova, Ming Zheng, Robert S. Mclean, and Louis E. BrusJ. Am. Chem. Soc. 128(28), 9004 (2006)

Graphite, Tubular PAHs, and the Diffuse Interstellar Bands, Zhiyong Zhou, Matthew Y. Sfeir, Lei Zhang, Mark S. Hybertsen, Michael Steigerwald, and Louis Brus, The Astrophysical Journal 638, L105–L108 (2006)

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