A chemometric approach for determining the reaction quantum yields in consecutive photochemical processes

作者：Marcolongo Juan P; Schmidt Juan; Levin Natalia; Slep Leonardo D^*

来源：Physical Chemistry Chemical Physics, 2017, 19(32): 21373-21381.

DOI：10.1039/c7cp03619a

A chemometric procedure to deal with spectroscopically monitored processes involving photochemical steps is fully described. The methodology makes it possible to work with reactions that involve several components with unknown ( and eventually overlapping) spectra and provides a tool for the simultaneous determination of both the quantum yields of the reaction and the spectra of all the species present in a multi-step photochemical process. As a benchmark, we apply these ideas to extract the quantum yields of photodetachment of coordinated ligands employing data recorded over the course of the decomposition of [Ru(tpm)(bpy)( CH3CN)](2+) and cis-[Ru(bpy)(2)(CH3CN)(2)](2+) under stationary photolysis conditions. The approach is fast and robust and it is easily implemented in scientific programming languages.

• 出版日期2017-8-28