Charge‐Transfer Processes in Zeolites: Toward Better Artificial Photosynthetic Models

Influence of Steric Confinement within Zeolite Y on Photoinduced Energy Transfer between [Ru(bpy)3]2+ and Iron Polypyridyl Complexes

“…6 ] 3+ as the precursor. 23,24 All solutions and suspensions were degassed with nitrogen and all procedures were performed under a nitrogen atmosphere in order to prevent formation of ruthenium red.…”

“…The pH of this suspension was adjusted to pH 5.4 ( 0.1 using HCl (0.1 M). For an occupation of one ruthenium complex per 20 supercages, [Ru(NH 3 ) 6 ]Cl 3 (0.0851 g) was added to the solution, and this was stirred for 8 h at 4°C. The resulting Z-[Ru(NH 3 ) 6 ] 3+ was filtered and washed with deionized water until no Cl -could be detected using silver nitrate solution (0.1 M).…”

“…The resulting Z-[Ru(NH 3 ) 6 ] 3+ was filtered and washed with deionized water until no Cl -could be detected using silver nitrate solution (0.1 M). The Z-[Ru(NH 3 ) 6 ] 3+ was then dried in vacuo and dispersed in degassed ethylene glycol (150 mL), dimethylsulfoxide (1 mL), and H 2 O (1 mL). 2,2′-Bipyridine (0.154 g, which represented approximately a 20% excess) was added, and the slurry brought to reflux with stirring under nitrogen for 4 h. The resulting orange product was filtered and sonicated with copious amounts of hot ethanol, then dispersed in NaCl (10%w/v, 500 mL), and stirred for 1 h in order to remove superficially or surface bound ruthenium species.…”

DFT and Experimental Study of the Host–Guest Interactions Effect on the Structure, Properties, and Electro-Catalytic Activities of N2O2–Ni(II) Schiff-Base Complexes Incorporated into Zeolite

“…16,58 Besides the two possible electron-transfer mechanisms proposed by Shaw and coworkers, 59 Dutta and Ledney 60 have proposed three distinct pathways of charge transfer in ZMEs, which is the extenstion of the original models proposed by Shaw et al…”

Electro- and magneto-electrochemistry of zeolite Y- and MCM-41-associated bipyrylium ion

“…Three basic models, extrazeolitic, intrazeolitic, and surface-mediated have been proposed [7,8]. Following Shaw et al [9], in the extrazeolitic mechanism, the electron transfer process takes place outside of the zeolite being preceded by the ion exchange of electroactive species with electrolyte cations, whereas in the intrazeolitic mechanism the electroactive species remains in the supercages of the outer cavities or subsurface zones of the zeolite.…”