25-27 November 2015
National Centre for Synchrotron Science
Australia/Melbourne timezone

Visualizing Au-Au bond formation in solution with femtosecond X-ray scattering

27 Nov 2015, 14:15
Conference Rooms ()

Conference Rooms

Oral Beamlines, Instrumentation and Techniques Techniques II


Prof. Shin-ichi Adachi (Photon Factory, IMSS, KEK)


Bond formation is an essential process in chemical reactions, but it is challenging to keep track of detailed atomic movements associated with bond formation because of its bimolecular nature. Bond formation in solution phase has been especially elusive because it is difficult to initiate and follow such diffusion-limited bimolecular processes with ultrafast time resolution. In this regard, a dicyanoaurate(I) oligomer complex, [Au(CN)2–]n, offers a good model system in which to study the dynamics of bond formation in solution. Using femtosecond time-resolved X-ray scattering, we successfully visualized in real time the birth of a gold trimer complex, [Au(CN)2–]3, that occurs via photoinduced formation of Au-Au covalent bonds [1]. This work showcases the possibility of tracking detailed structural changes in solution with sub-ps temporal and sub-angstrom spatial resolutions, thanks to the advent of X-ray free electron lasers and the advance of data analysis of time-resolved solution scattering data. REFERENCE [1] Kim, K. H., Kim, J. G., Nozawa, S., Sato, T., Oang, K. Y., Kim, T. W., Ki, H., Jo, J., Park, S., Song, C., Sato, T., Ogawa, K., Togashi, T., Tono, K., Yabashi, M., Ishikawa, T., Kim, J., Ryoo, R., Kim, J., Ihee, H. & Adachi, S., Nature, 518, 385-389 (2015).
Keywords XFEL, femtosecond, time-resolved X-ray scattering

Primary author

Prof. Shin-ichi Adachi (Photon Factory, IMSS, KEK)

Presentation Materials

Your browser is out of date!

Update your browser to view this website correctly. Update my browser now