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DOI: 10.1055/s-2007-968994
Energy Collection by a Polymer Shish Kabob
Contributor(s):Timothy M. SwagerUniversität Bonn and Ludwig-Maximilians-Universität, München, Germany; University of Utah, Salt Lake City, USA
Exciton Accumulation in π-Conjugated Wires Encapsulated by Light-Harvesting Macrocycles
Angew. Chem. Int. Ed. 2007, 46: 3450-3455
Publication History
Publication Date:
07 November 2007 (online)
Key words
polymers - energy transfer - macrocycles
Significance
Future energy and photonic technologies will rely on the delivery of electronic excitations to a specific location. In addition to synthesizing an impressive structure, the authors demonstrate the use of geometrically fixed independent chromophores to create systems capable of having two excitations present at the same time. This leads to the annihilation of the excitations when they combine. Delivering multiple quanta of energy to reaction centers has long been of interest in the search for new photochemistry and physics.
Comment
The authors demonstrate that the collection of multiple photons is dependent on the molecular weight and that longer polymers can accumulate multiple excitations at lower laser pump powers than the shorter polymers. The molecular architecture is complex and is not likely to be widely emulated. However, this report will serve to guide others to develop more practical energy collection systems.