Electron-Transfer Reactions of Ruthenium Trisbipyridyl-Viologen Donor-Acceptor Molecules: Comparison of the Distance Dependence of Electron Transfer-Rates in the Normal and Marcus Inverted Regions

Use of X‐Ray Diffraction, Molecular Simulations, and Spectroscopy to Determine the Molecular Packing in a Polymer‐Fullerene Bimolecular Crystal

“…Slightly modifying the distance between the donor and acceptor can change the charge-transfer rates by more than an order of magnitude and consequently have an enormous impact on exciton dissociation and recombination. [ 6 ] Likewise, small changes in the molecular packing can signifi cantly change charge-carrier mobilities. [ 7 , 8 ] Although important processes, such as charge separation and recombination, can depend on the polymer-fullerene wavefunction overlap, very little is known about how polymers and fullerenes pack on the molecular level since it is very diffi cult to accurately characterize molecular packing in BHJs.…”

Photoelectrochemistry and Photocatalysis in Nanoscale Inorganic Chemical Systems

“…63 In both sets of experiments, we observed a kinetic isotope effect (KIE) of 1.0, which contrasts the KIE's of 1.4 and 1. 6 , respectively. This suggests that the rate determining step in water oxidation at IrO 2 colloids is outer sphere electron transfer between the oxidized sensitizer and the colloid.…”

“…Because the solid is a cation exchanger, the resulting interlayer Pt clusters are inaccessible to anions. For example, [Fe(CN) 6 ] 3-is not reduced by molecular hydrogen in the presence of platinized sheets prepared by this method. This suggests that anionic species, such as I 3 -, are incapable of intralayer diffusion and recombination with molecular hydrogen.…”

“…While these effects can be exploited to make two-and three-component electron transport chains, [1][2][3][4] it is difficult to prepare more elaborate assemblies in zeolites because of the inherent periodic nature of the host material. 5,6 Zeolite A Zeolite Y Lamellar insulators such as α-Zr(HPO 4 ) 2 . H 2 O do not provide the same kind of regular pore networks as zeolites.…”

Bifunctional Rhodium Intercalator Conjugates as Mismatch-Directing DNA Alkylating Agents

“…The mono-anion of 4,4'-dimethylbipyridine, obtained by deprotonation of 3 with one equivalent of freshly prepared lithium diisopropylamine, was reacted with an excess of 1,6-dibromohexane under carefully controlled conditions. [2,3] After aqueous workup and column chromatography on silica with a gradient of dichloromethane and diethylether, 4-(7-bromoheptyl)-4'-methylbipyridine 4 was obtained in 58 % yield. This was converted to phthalimide 5 in almost quantitative yield by reaction with potassium phthalimide followed by cleavage to 4-(7-aminoheptyl)-4'-methylbipyridine 6 with hydrazine monohydrate in methanol.…”