Watching Molecules Function – Spectroscopic Insights into Light-Driven Catalysts and Cellular Markers

סמינר כימיה פיזקאלית ואנאליטית

מרצה: Prof. Benjamin Dietzek

20 Mar 2016 @ 14:30

מיקום: חדר סמינרים פקולטי

The charge transfer reaction mechanism in Ruthenium polypyridine complexes used for solar-energy conversion are studied by combining UV-Vis absorption, resonance Raman spectroscopy, time-resolved transient absorption spectroscopy and electrochemical methods. This combination of methods in concert with quantum chemistry calculations allow detailed insights into the structural and electronic properties of electronic intermediates, which might be of functional importance in the overall solar-energy conversion achieved by the transition metal complexes investigated.
In a second part of the presentation recent work is discussed that relates to the use of Ru(II)-polypyridine complexes as photo-activated anti-cancer drugs. We will discuss the sub-ns photophysics of well established benchmark dyes incorporating dppz-derived ligands in complex environments. This work will ultimately relate to investigations of ultrafast processes in transition metal complexes in complex biological environments.
This work was supported by the COST Action CM1202, PERSPECT-H2O.
[1] L. Zedler et al., Chem. Eur. J., 2014, 3793-3799.
[2] Y. Zhang et al., PhysChemChemPhys, 2015, 29637-29646.
[3] J. Schindler et al., Chem.Phys.Chem., 2015, 1061-1070.
[4] M. Wächtler et al., Chem.Phys. Chem., 2013, 2973-2983.
[5] M. Wächtler et al., J. Phys. Chem. C, 2012, 25664-25676.
[6] S. Kupfer et al., J. Phys. Chem. C, 2012, 19968-19977.
[7] M. Wächtler et al., Coord. Chem. Rev. 2012, 1479-1508.
[8] C. Kuhnt et al., Chem. Commun. 2011, 3820-3821.
[9] A. de la Cadena et al., Chem. Phys. Lett. 2016, 56-61.