uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
Iron sensitizer converts light to electrons with 92% yield
Lund Univ, Dept Chem Phys, SE-22100 Lund, Sweden..
Lund Univ, Dept Chem Phys, SE-22100 Lund, Sweden.;Lund Univ, Dept Chem, Ctr Anal & Synth, SE-22100 Lund, Sweden..
Lund Univ, Dept Chem, Ctr Anal & Synth, SE-22100 Lund, Sweden..
Lund Univ, Dept Chem, Theoret Chem Div, SE-22100 Lund, Sweden..
Show others and affiliations
2015 (English)In: Nature Chemistry, ISSN 1755-4330, E-ISSN 1755-4349, Vol. 7, no 11, 883-889 p.Article in journal (Refereed) Published
Abstract [en]

Solar energy conversion in photovoltaics or photocatalysis involves light harvesting, or sensitization, of a semiconductor or catalyst as a first step. Rare elements are frequently used for this purpose, but they are obviously not ideal for large-scale implementation. Great efforts have been made to replace the widely used ruthenium with more abundant analogues like iron, but without much success due to the very short-lived excited states of the resulting iron complexes. Here, we describe the development of an iron-nitrogen-heterocyclic-carbene sensitizer with an excited-state lifetime that is nearly a thousand-fold longer than that of traditional iron polypyridyl complexes. By the use of electron paramagnetic resonance, transient absorption spectroscopy, transient terahertz spectroscopy and quantum chemical calculations, we show that the iron complex generates photoelectrons in the conduction band of titanium dioxide with a quantum yield of 92% from the 3MLCT (metal-to-ligand charge transfer) state. These results open up possibilities to develop solar energy-converting materials based on abundant elements.

Place, publisher, year, edition, pages
2015. Vol. 7, no 11, 883-889 p.
National Category
Chemical Sciences
URN: urn:nbn:se:uu:diva-267186DOI: 10.1038/NCHEM.2365ISI: 000363468600009PubMedID: 26492008OAI: oai:DiVA.org:uu-267186DiVA: diva2:872730
The Crafoord FoundationSwedish Research CouncilKnut and Alice Wallenberg FoundationSwedish Energy AgencyEU, European Research Council, 226136-VISCHEM
Available from: 2015-11-20 Created: 2015-11-19 Last updated: 2015-11-20Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textPubMed

Search in DiVA

By author/editor
Huang, PingLomoth, ReinerStyring, Stenbjörn
By organisation
Molecular BiomimeticsPhysical Chemistry
In the same journal
Nature Chemistry
Chemical Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 533 hits
ReferencesLink to record
Permanent link

Direct link