The synthesis and photodecomposition behaviour of a family of CO releasing molecules (CORMs) based on [Mn(CO)3bpy] derivatives connected to a semiconductor Quantum Dot (QD) sensitizer is described here. Compared to the non-sensitized complexes, such systems show a 2 to 6-fold increase of the photodecomposition rate upon irradiation with visible light.

The effect of a strong electric field ~up to 10 V/cm! on one-quantum UV photoexcitation and photodecomposition of germanium oxygen deficient centers ~GODC! in twin-hole germanosilicate fibers with internal wire electrodes is reported. The fiber has been irradiated with the UV light of a deuterium lamp and triplet photoluminescence of GODC has been used to monitor the kinetics of its photodecay....

The photodecomposition products of Ru(bpy)3(2+) in water, in aqueous buffered solutions and encapsulated in zeolite-Y have been analyzed by chromatography and UV-visible spectroscopy. The chromatographic method is found to be capable of separating species with the same charge but slightly different ligands as well as geometrical isomers. In all the systems investigated, photodecomposition proce...

Z. Naturforsch. 51 b, 1067-1071 (1996); received March 8, 1996 Myochrysin, Auranotin. Gold(I) Complexes, Photochemistry, Luminescence Myochrysin (sodium aurothiomalate hydrate) and auranofin [2,3.4,6-tetra-O-acetyl-l-thio-ßD-glucopyranosato-S)(triethylphospine)gold(I)] are luminescent in the solid state and in ethanol glasses at 77 K (myochrysin: Amax = 600 nm; auranofin: 618 nm). Aqueous myoch...

Letter Is Photodecomposition More Important Than Metabolic Activation for the Antitumor Activity of Dacarbazine? Lev et al . (1) clearly demonstrate that the antitumor agent dacarbazine (DTIC) causes melanoma cells to secrete interleukin (IL)-8 and vascular endothelial growth factor (VEGF). The authors suggest that cytokine overexpression might render tumor cells resistant to DTIC, which is pre...

As its major removal process the photodissociat ion of a tmospheric C 1 0 N 0 2 in the ultraviolet is discussed. It has repeatedly been pointed out that significance should be at t r ibuted to the pathways of chlorine nitrate fo rmat ion and its destruction since this compound might be involved in the ozone depletion mechanism through both the C10x and N O x a tmospheric cycles. This communica ...