UV Light Generation and Challenging Photoreactions Enabled by Upconversion in Water

Publikationstyp:
Zeitschriftenaufsatz
Metadaten:
Autoren
  • Bjoern Pfund
  • Debora M Steffen
  • Mirjam R Schreier
  • Maria-Sophie Bertrams
  • Chen Ye
  • Karl Boerjesson
  • Oliver S Wenger
  • Christoph Kerzig
Autoren-URL
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000541685800031&DestLinkType=FullRecord&DestApp=WOS_CPL
DOI
10.1021/jacs.0c02835
eISSN
1520-5126
Externe Identifier
  • Clarivate Analytics Document Solution ID: MA1NX
  • PubMed Identifier: 32412242
ISSN
0002-7863
Ausgabe der Veröffentlichung
23
Zeitschrift
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Paginierung
10468 - 10476
Datum der Veröffentlichung
2020
Status
Published
Titel
UV Light Generation and Challenging Photoreactions Enabled by Upconversion in Water
Sub types
  • Article
Ausgabe der Zeitschrift
142

Datenquelle: Web of Science (Lite)

Andere Metadatenquellen:
Autoren
  • Björn Pfund
  • Debora M Steffen
  • Mirjam R Schreier
  • Maria-Sophie Bertrams
  • Chen Ye
  • Karl Börjesson
  • Oliver S Wenger
  • Christoph Kerzig
DOI
10.1021/jacs.0c02835
eISSN
1520-5126
ISSN
0002-7863
Ausgabe der Veröffentlichung
23
Zeitschrift
Journal of the American Chemical Society
Sprache
en
Online publication date
2020
Paginierung
10468 - 10476
Datum der Veröffentlichung
2020
Status
Published
Herausgeber
American Chemical Society (ACS)
Herausgeber URL
http://dx.doi.org/10.1021/jacs.0c02835
Datum der Datenerfassung
2023
Titel
UV Light Generation and Challenging Photoreactions Enabled by Upconversion in Water
Ausgabe der Zeitschrift
142

Datenquelle: Crossref

Abstract
Sensitized triplet-triplet annihilation (sTTA) is the most promising mechanism for pooling the energy of two visible photons, but its applications in solution were so far limited to organic solvents, with a current maximum of the excited-singlet state energy of 3.6 eV. By combining tailor-made iridium complexes with naphthalenes, we demonstrate blue-light driven upconversion in water with unprecedented singlet-state energies approaching 4 eV. The annihilators have outstanding excited-state reactivities enabling challenging photoreductions driven by sTTA. Specifically, we found that an aryl-bromide bond activation can be achieved with blue photons, and we obtained full conversion for the very energy-demanding decomposition of a persistent ammonium compound as typical water pollutant, not only with a cw laser but also with an LED light source. These results provide the first proof-of-concept for the usage of low-power light sources for challenging reactions employing blue-to-UV upconversion in water and pave the way for the further development of sustainable light-harvesting applications.
Addresses
  • Department of Chemistry, University of Basel, St. Johanns-Ring 19, 4056 Basel, Switzerland.
Autoren
  • Björn Pfund
  • Debora M Steffen
  • Mirjam R Schreier
  • Maria-Sophie Bertrams
  • Chen Ye
  • Karl Börjesson
  • Oliver S Wenger
  • Christoph Kerzig
DOI
10.1021/jacs.0c02835
eISSN
1520-5126
Externe Identifier
  • PubMed Identifier: 32412242
Funding acknowledgements
  • Swiss National Science Foundation: 200021_178760
  • Knut och Alice Wallenbergs Stiftelse: KAW 2017.0192
  • Deutsche Akademie der Naturforscher Leopoldina - Nationale Akademie der Wissenschaften: LPDS 2017-11
  • European Research Council: ERC-2017-StG-757733
  • Universit?t Basel:
Open access
false
ISSN
0002-7863
Ausgabe der Veröffentlichung
23
Zeitschrift
Journal of the American Chemical Society
Sprache
eng
Medium
Print-Electronic
Online publication date
2020
Paginierung
10468 - 10476
Datum der Veröffentlichung
2020
Status
Published
Datum der Datenerfassung
2020
Titel
UV Light Generation and Challenging Photoreactions Enabled by Upconversion in Water.
Sub types
  • Research Support, Non-U.S. Gov't
  • Journal Article
Ausgabe der Zeitschrift
142

Datenquelle: Europe PubMed Central

Abstract
Sensitized triplet-triplet annihilation (sTTA) is the most promising mechanism for pooling the energy of two visible photons, but its applications in solution were so far limited to organic solvents, with a current maximum of the excited-singlet state energy of 3.6 eV. By combining tailor-made iridium complexes with naphthalenes, we demonstrate blue-light driven upconversion in water with unprecedented singlet-state energies approaching 4 eV. The annihilators have outstanding excited-state reactivities enabling challenging photoreductions driven by sTTA. Specifically, we found that an aryl-bromide bond activation can be achieved with blue photons, and we obtained full conversion for the very energy-demanding decomposition of a persistent ammonium compound as typical water pollutant, not only with a cw laser but also with an LED light source. These results provide the first proof-of-concept for the usage of low-power light sources for challenging reactions employing blue-to-UV upconversion in water and pave the way for the further development of sustainable light-harvesting applications.
Autoren
  • Björn Pfund
  • Debora M Steffen
  • Mirjam R Schreier
  • Maria-Sophie Bertrams
  • Chen Ye
  • Karl Börjesson
  • Oliver S Wenger
  • Christoph Kerzig
Autoren-URL
https://www.ncbi.nlm.nih.gov/pubmed/32412242
DOI
10.1021/jacs.0c02835
eISSN
1520-5126
Ausgabe der Veröffentlichung
23
Zeitschrift
J Am Chem Soc
Sprache
eng
Country
United States
Paginierung
10468 - 10476
Datum der Veröffentlichung
2020
Status
Published
Datum, an dem der Datensatz öffentlich gemacht wurde
2020
Titel
UV Light Generation and Challenging Photoreactions Enabled by Upconversion in Water.
Sub types
  • Journal Article
  • Research Support, Non-U.S. Gov't
Ausgabe der Zeitschrift
142

Datenquelle: PubMed

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