Laser photodetachment from aromatic anions in nonpolar solvents

An “All‐Green” Catalytic Cycle of Aqueous Photoionization

“…[1] Having in mind the ultimate aim of utilizing the sun as the (low-flux) light source, it is the most promising strategy to employ two successive single-photon absorptions and store the energy of the first photon in an intermediate. Examples of electron detachment by green light are known for all common classes of photochemical intermediates, excited singlet states, [2] triplet states, [3,4] radicals, [5][6][7] and radical anions, [8][9][10][11][12] but the longer such an intermediate lives, the more likely it is to absorb the ionizing second photon. This suggests that the usefulness for this process increases in the order excited singlet (ns) < triplet (ms) < radical or radical anion (no photophysical deactivation).…”

Electrons in Nonpolar Liquids

“…In the case of n-alkanes and benzene this product is fairly constant over a large temperature range. [ 171 This same study also found that at 296 K hd is almost the same for the alkanes from C 4 to (214. For the pressure study mentioned above, free ion yields were found to decrease with increasing pressure yet the product, bd, remained quite constant for all six liquids studied.…”

Rhodamine 6G Radical: A Spectro (Fluoro) Electrochemical and Transient Spectroscopic Study

“…We suggest that the excited 2 is unstable and undergoes photoionization. Photoionization producing solvated electrons has been observed for organic dyes, radicals (ketyl,, diphenylketyl) and radical anions (xanthone, aromatic carboxylic acids, stilbene, anthraquinone, perylene, biphenyl, pyrene, coronene, nitrobenzene) . Goez and co‐workers have recently published an “all‐green” catalytic method for generation of solvated electrons based on PET between a sacrificial electron donor, 4‐methoxyphenolate, and a photocatalyst [Ru(bpy) 3 ] 2+ .…”