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Synthesis and Characterization of Cyclopentadithiophene Heterofulvenes: Design Tools for Light-Activated Processes
Lund Univ, Dept Chem Phys, Lund, Sweden..
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Molecular Biomimetics.
Lund Univ, Dept Chem Phys, Lund, Sweden..
Lund Univ, Dept Chem Phys, Lund, Sweden..
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2017 (English)In: Chemistry - A European Journal, ISSN 0947-6539, E-ISSN 1521-3765, Vol. 23, no 24, 5673-5677 p.Article in journal (Refereed) Published
Abstract [en]

The development of new materials for solar-to-energy conversion should consider stability, ease of fabrication, and beneficial photophysical properties. In this context, a set of novel -conjugated building blocks, with phospha- and arsaalkenes possessing a unique dithienyl annulated heterofulvenoid core, have been prepared as air- and moisture-stable sensitizers. These compounds unify electron-donor and -acceptor moieties, making them potential candidates for light-harvesting applications. Optical characterization of these systems was performed by steady-state and time-resolved absorption spectroscopy, supported by time-dependent DFT calculations. Tuning of the optical properties of these systems can be achieved by varying the pnictogen element at the bridgehead position, giving a bathochromic shift of approximate to 40nm and coordinating the phosphaalkene towards gold Au-I centers. The latter results in a approximate to 2000-fold extension of the approximate to 10ps lifetime of uncoordinated systems well into the ns regime.

Place, publisher, year, edition, pages
WILEY-V C H VERLAG GMBH , 2017. Vol. 23, no 24, 5673-5677 p.
Keyword [en]
arsaalkene, electrochemistry, main group elements, phosphaalkene, pnictogens, time-resolved spectroscopy
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-322721DOI: 10.1002/chem.201700917ISI: 000400044400006PubMedID: 28248442OAI: oai:DiVA.org:uu-322721DiVA: diva2:1099130
Funder
Swedish Research Council, 2013-4763Knut and Alice Wallenberg FoundationÅForsk (Ångpanneföreningen's Foundation for Research and Development)
Available from: 2017-05-29 Created: 2017-05-29 Last updated: 2017-05-29Bibliographically approved

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Orthaber, Andreas

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