title: Engineering antiparallel charge-transfer cascades into supramolecular n/p-heterojunction photosystems: toward directional self-sorting on surfaces.
abstract: This contribution describes recent progress made with the design, synthesis and evaluation of supramolecular architectures for artificial photosynthesis. Emphasis is on the possible introduction of antiparallel redox gradients into the co-axial hole- and electron-transporting channels of supramolecular n/p-heterojunctions, and on directional, uniform axial and alternate lateral self-sorting to get there. Recent results suggest that two-component gradients in both channels are sufficient for photoinduced charge separation over very long distances. Removal of one gradient leads to charge recombination at the usual critical distances, inversion of both gradients causes photocurrent inhibition. These promising results call for user-friendly, cheap and fast approaches to oriented multicomponent architectures on solid surfaces. However, the reduction of efforts devoted to covalent organic synthesis will have to be compensated by the development of strategic concepts on the supramolecular level to tackle basic questions such as self-sorting on surfaces.
authors.affiliation: Department of Organic Chemistry, University of Geneva, Geneva, Switzerland.
authors.forename: Marco
authors.initials: M
authors.lastname: Lista
authors.forename: Jetsuda
authors.initials: J
authors.lastname: Areephong
authors.forename: Edvinas
authors.initials: E
authors.lastname: Orentas
authors.forename: Pierre
authors.initials: P
authors.lastname: Charbonnaz
authors.forename: Naomi
authors.initials: N
authors.lastname: Sakai
authors.forename: Stefan
authors.initials: S
authors.lastname: Matile
mesh_terms: D001674:Bioelectric Energy Sources; D056804:Biofuels; D002616:Chemical Engineering / Q000379:methods*; D004579:Electron Transport; D004583:Electrons; D055772:Green Chemistry Technology / Q000379:methods*; D008958:Models, Molecular; D010084:Oxidation-Reduction; D010777:Photochemistry / Q000379:methods*; D010788:Photosynthesis; D012993:Solar Energy / Q000706:statistics & numerical data*; D055672:Static Electricity; D013472:Sunlight
chemical_list: D056804:Biofuels