Monitoring excited state dynamics in cis-[Ru(bpy)(2)(py)(2)](2+) by ultrafast synchrotron techniques

作者：Borfecchia Elisa^*; Garino Claudio; Gianolio Diego; Salassa Luca; Gobetto Roberto; Lamberti Carlo

来源：Catalysis Today, 2014, 229: 34-45.

DOI：10.1016/j.cattod.2013.11.057

• Metal complexes
• Photochemistry
• Synchrotron ultrafast techniques
• Time resolved XAS
• Time resolved X-ray solution scattering
• DFT

Photoactive metal complexes are applied in a variety of fields, including solar energy conversion, catalysis and medicinal chemistry. Their effectiveness depends on the excited-state features that control the nature of photoreaction intermediates and photoproducts. For this reason, the structural determination of light-induced transient species is fundamental for a rational design of novel photoactive metal complexes. Among the available time-resolved methods, synchrotron-based techniques are emerging as successful tools in detecting ultrafast structural changes in molecules. The aim of this contribution is to review the results obtained by our group combining TR-XSS (Time-Resolved X-ray Solution Scattering) and TR-XAS (Time-Resolved X-ray Absorption Spectroscopy) to study the excited state dynamics in cis-[Ru(bpy)(2)(py)(2)]Cl-2, a model compound for ligand releasing applications. Besides a comprehensive summary of our previous work, we report here new findings we obtained by analysis of 100 ps-resolution TR-XSS dataset. The potential of these techniques towards applications in catalysis are discussed in comparison to other time resolved spectroscopies.

• 出版日期2014-6-15