Bewegungsförderung 2013 = Promotion de l'activité physique 2013

Die Schweiz hat neue Empfehlungen für gesundheitswirksame Bewegung - aber wie bringt man eine Bevölkerung tatsächlich dazu, sich genügend zu bewegen? Einer von sieben erfolgversprechenden Ansätzen liegt in der medizinischen Grundversorgung. La Suisse a émis de nouvelles recommandations préconisant l'exercice physique comme gage de bonne santé. Mais, dans la réalité, comment parvenir à convaincre toute une population de bouger suffisamment? Les soins médicaux primaires constituent l'une des sept approches prometteuses

Voltammetry within structured liquid nanosystems: towards the design of a flexible, three-dimensional framework for artificial photosystems

Normal lyotropic liquid crystals (in the lamellar or hexagonal phases) are investigated as a route to afford a structured, three-dimensional, quasi-biphasic framework within which electron transfer cascades may be initiated voltammetrically. For model systems, we show that these can take place through reagent partitioning between the hydrophobic and hydrophilic subphases, and illustrate how the structure and its orientation, the nature of the ionic doping of the framework, and the hydrophobicity of the redox analyte may give rise to changes in the observed voltammetric waveshape. For the case of an artificial mimic of the first few stages of Photosystem I, we demonstrate that photo-induced electron transfer is likewise affected by the orientation, and develop a system of photon efficiency of ∼0.1%

Three-Dimensional Framework for Artificial Photosystems

A c c e p t e d M a n u s c r i p t 1 Highlights • Lyotropic liquid crystals are unique media via reagent diffusion-partition. • Structure and orientation as well as dopant nature are significant. • First report of liquid nanotechnology for biomimetic artificial photosystems. Page 2 of 35 A c c e p t e d M a n u s c r i p t A c c e p t e d M a n u s c r i p t 3 Abstract Normal lyotropic liquid crystals (in the lamellar or hexagonal phases) are investigated as a route to afford a structured, three-dimensional, quasi-biphasic framework within which electron transfer cascades may take place using cyclic voltammetry. For model systems, we show that these can take place through reagent partitioning between the hydrophobic and hydrophilic subphases, and illustrate how the structure and its orientation, the nature of the ionic doping of the framework, and the hydrophobicity of the redox analyte may give rise to changes in the observed voltammetric waveshape. For the case of an artitifical mimic of the first few stages of Photosystem I, we demonstrate that photoinduced electron transfer is likewise affected by the orientation, and develop a system of photon efficiency of ~0.1%