Laboratory-scale photoredox catalysis using hydrated electrons sustainably generated with a single green laser.

ABSTRACT: The ruthenium-tris-bipyridyl dication as catalyst combined with the ascorbate dianion as bioavailable sacrificial donor provides the first regenerative source of hydrated electrons for chemical syntheses on millimolar scales. This electron generator is operated simply by illumination with a frequency-doubled Nd:YAG laser (532 nm) running at its normal repetition rate. Much more detailed information than by product studies alone was obtained by photokinetical characterization from submicroseconds (time-resolved laser flash photolysis) up to one hour (preparative photolysis). The experiments on short timescales established a reaction mechanism more complex than previously thought, and proved the catalytic action by unchanged concentration traces of the key transients over a number of flashes

SUBMITTER: Naumann R 

PROVIDER: S-EPMC5676201 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature