Non-light driven chemical reactions: Perspectives for time-resolved studies

Event Details
Event Date
Speaker Name/Affiliation
Giulia F. Mancini / Paul Scherrer Institute
Seminar Type/Subject
Seminar Type
Event Details & Abstracts

Most of (bio)chemical reactions in Nature and in industrial processes are driven by thermal effects that bring the systems above the barrier for reaction. This process can also be triggered by the Temperature jump (T-jump) method. The latter is ideal in aqueous solvents, where, by directly exciting the water high frequency vibrational and/or bending modes,[1-3] it leads to an ultrafast (2-5 ps) increase in the temperature of the irradiated volume, locally triggering non-light driven chemical reactions. In my talk, I will discuss how the time-resolved laser T-jump/X-ray Absorption probe method enables the identification of the intermediates in chemical reactions with exquisite element-specificity and structural-sensitivity (4). Moreover, I will elaborate on possible synergies between large facility and lab-based sources towards future experiments.

References: [1] Z. Wang, Y. Pang, & D. D. Dlott, - The Journal of Physical Chemistry A, 111(17), 3196-3208 (2007). [2] P. Wernet, et al. - Applied Physics A 92.3, 511-516 (2008). [3] H. Ma, C. Wan, & A. H. Zewail, - Journal of the American Chemical Society, 128(19), 6338-6340 (2006). [4] O. Cannelli, et al.,” Towards time-resolved laser T-jump/X-ray probe spectroscopy in aqueous solutions”, submitted (2019).