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

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Annihilation Versus Excimer Formation by the Triplet Pair in Triplet-Triplet Annihilation Photon Upconversion
Univ Gothenburg, Dept Chem & Mol Biol, Kemigarden 4, Gothenburg, Sweden.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Physical Chemistry. Chalmers Univ Technol, Dept Chem & Biol Engn Organ Chem, SE-41296 Gothenburg, Sweden;Univ Cambridge, Dept Phys, Cavendish Lab, 19 JJ Thompson Ave, Cambridge CB3 0HE, England.ORCID iD: 0000-0001-6583-8654
Chalmers Univ Technol, Dept Chem & Biol Engn Organ Chem, SE-41296 Gothenburg, Sweden.
Univ Gothenburg, Dept Chem & Mol Biol, Kemigarden 4, Gothenburg, Sweden.ORCID iD: 0000-0001-8533-201X
2019 (English)In: Journal of the American Chemical Society, ISSN 0002-7863, E-ISSN 1520-5126, Vol. 141, no 24, p. 9578-9584Article in journal (Refereed) Published
Abstract [en]

The triplet pair is the key functional unit in triplet-triplet annihilation photon upconversion. The same molecular properties that stabilize the triplet pair also allow dimers to form on the singlet energy surface, creating an unwanted energy relaxation pathway. Here we show that excimer formation most likely is a consequence of a triplet dimer formed before the annihilation event. Polarity-dependent studies were performed to elucidate how to promote wanted emission pathways over excimer formation. Furthermore, we show that the yield of triplet-triplet annihilation is increased in higher-viscosity solvents. The results will bring new insights in how to increase the upconversion efficiency and how to avoid energy-loss channels.

Place, publisher, year, edition, pages
AMER CHEMICAL SOC , 2019. Vol. 141, no 24, p. 9578-9584
National Category
Physical Chemistry
Identifiers
URN: urn:nbn:se:uu:diva-390197DOI: 10.1021/jacs.9b02302ISI: 000471835600026PubMedID: 31131601OAI: oai:DiVA.org:uu-390197DiVA, id: diva2:1341327
Funder
Swedish Research Council, 2016-03354EU, European Research Council, ERC-2017-StG-757733Available from: 2019-08-08 Created: 2019-08-08 Last updated: 2019-08-08Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textPubMed

Authority records BETA

Gray, Victor

Search in DiVA

By author/editor
Gray, VictorBörjesson, Karl
By organisation
Physical Chemistry
In the same journal
Journal of the American Chemical Society
Physical Chemistry

Search outside of DiVA

GoogleGoogle Scholar

doi
pubmed
urn-nbn

Altmetric score

doi
pubmed
urn-nbn
Total: 8 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf