Excited state energy landscape of phosphorescent group 14 complexes

Publikationstyp:
Zeitschriftenaufsatz
Metadaten:
Autoren
  • Philipp Sikora
  • Robert Naumann
  • Christoph Foerster
  • Katja Heinze
Autoren-URL
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000928596500001&DestLinkType=FullRecord&DestApp=WOS_CPL
DOI
10.1039/d2sc06984a
eISSN
2041-6539
Externe Identifier
  • Clarivate Analytics Document Solution ID: 9Q1QB
  • PubMed Identifier: 36908954
ISSN
2041-6520
Ausgabe der Veröffentlichung
10
Zeitschrift
CHEMICAL SCIENCE
Paginierung
2489 - 2500
Datum der Veröffentlichung
2023
Status
Published
Titel
Excited state energy landscape of phosphorescent group 14 complexes
Sub types
  • Article
Ausgabe der Zeitschrift
14

Datenquelle: Web of Science (Lite)

Andere Metadatenquellen:
Abstract
<jats:p>The differing excited state energy landscapes of group 14 complexes can lead to Kasha and non-Kasha phosphorescence.</jats:p>
Autoren
  • Philipp Sikora
  • Robert Naumann
  • Christoph Förster
  • Katja Heinze
DOI
10.1039/d2sc06984a
eISSN
2041-6539
ISSN
2041-6520
Ausgabe der Veröffentlichung
10
Zeitschrift
Chemical Science
Sprache
en
Online publication date
2023
Paginierung
2489 - 2500
Status
Published online
Herausgeber
Royal Society of Chemistry (RSC)
Herausgeber URL
http://dx.doi.org/10.1039/d2sc06984a
Datum der Datenerfassung
2024
Titel
Excited state energy landscape of phosphorescent group 14 complexes
Ausgabe der Zeitschrift
14

Datenquelle: Crossref

Abstract
Great progress has been achieved on phosphorescent or photoactive complexes of the Earth-abundant transition metals, while examples for phosphorescent heavy main group element complexes are rare, in particular for group 14 complexes in the oxidation state +II. The known compounds often show only weak phosphorescence with fast non-radiative deactivation. The underlying photophysical processes and the nature of the phosphorescent electronic states have remained essentially unexplored. The present combined photophysical and theoretical study on tin(ii) and lead(ii) complexes E(bpep) with the dianionic tridentate ligand bpep<sup>2-</sup> (E = Sn, Pb; H<sub>2</sub>bpep = 2-[1,1-bis(1<i>H</i>-pyrrol-2-yl)ethyl]pyridine) provides unprecedented insight in the excited state energy landscape of tetrel(ii) complexes. The tin complex shows green intraligand charge transfer (ILCT) phosphorescence both in solution and in the solid state. In spite of its larger heavy-atom effect, the lead complex only shows very weak red phosphorescence from a strongly distorted ligand-to-metal charge transfer (LMCT) state at low temperatures in the solid state. Detailed (TD-)DFT calculations explain these observations and delineate the major path of non-radiative deactivation <i>via</i> distorted LMCT states. These novel insights provide rational design principles for tetrel(ii) complexes with long-lived phosphorescence.
Addresses
  • Johannes Gutenberg University Mainz Duesbergweg 10-14 55128 Mainz Germany christoph.foerster@uni-mainz.de katja.heinze@uni-mainz.de.
Autoren
  • Philipp Sikora
  • Robert Naumann
  • Christoph Förster
  • Katja Heinze
DOI
10.1039/d2sc06984a
eISSN
2041-6539
Externe Identifier
  • PubMed Identifier: 36908954
  • PubMed Central ID: PMC9993841
Funding acknowledgements
  • Deutsche Forschungsgemeinschaft: INST 247/1018-1
Open access
true
ISSN
2041-6520
Ausgabe der Veröffentlichung
10
Zeitschrift
Chemical science
Sprache
eng
Medium
Electronic-eCollection
Online publication date
2023
Open access status
Open Access
Paginierung
2489 - 2500
Datum der Veröffentlichung
2023
Status
Published
Publisher licence
CC BY-NC
Datum der Datenerfassung
2023
Titel
Excited state energy landscape of phosphorescent group 14 complexes.
Sub types
  • research-article
  • Journal Article
Ausgabe der Zeitschrift
14

Files

https://pubs.rsc.org/en/content/articlepdf/2023/sc/d2sc06984a https://europepmc.org/articles/PMC9993841?pdf=render

Datenquelle: Europe PubMed Central

Abstract
Great progress has been achieved on phosphorescent or photoactive complexes of the Earth-abundant transition metals, while examples for phosphorescent heavy main group element complexes are rare, in particular for group 14 complexes in the oxidation state +II. The known compounds often show only weak phosphorescence with fast non-radiative deactivation. The underlying photophysical processes and the nature of the phosphorescent electronic states have remained essentially unexplored. The present combined photophysical and theoretical study on tin(ii) and lead(ii) complexes E(bpep) with the dianionic tridentate ligand bpep2- (E = Sn, Pb; H2bpep = 2-[1,1-bis(1H-pyrrol-2-yl)ethyl]pyridine) provides unprecedented insight in the excited state energy landscape of tetrel(ii) complexes. The tin complex shows green intraligand charge transfer (ILCT) phosphorescence both in solution and in the solid state. In spite of its larger heavy-atom effect, the lead complex only shows very weak red phosphorescence from a strongly distorted ligand-to-metal charge transfer (LMCT) state at low temperatures in the solid state. Detailed (TD-)DFT calculations explain these observations and delineate the major path of non-radiative deactivation via distorted LMCT states. These novel insights provide rational design principles for tetrel(ii) complexes with long-lived phosphorescence.
Date of acceptance
2023
Autoren
  • Philipp Sikora
  • Robert Naumann
  • Christoph Förster
  • Katja Heinze
Autoren-URL
https://www.ncbi.nlm.nih.gov/pubmed/36908954
DOI
10.1039/d2sc06984a
Externe Identifier
  • PubMed Central ID: PMC9993841
ISSN
2041-6520
Ausgabe der Veröffentlichung
10
Zeitschrift
Chem Sci
Sprache
eng
Country
England
Paginierung
2489 - 2500
PII
d2sc06984a
Datum der Veröffentlichung
2023
Status
Published online
Titel
Excited state energy landscape of phosphorescent group 14 complexes.
Sub types
  • Journal Article
Ausgabe der Zeitschrift
14

Datenquelle: PubMed

Author's licence
CC-BY-NC
Autoren
  • Philipp Sikora
  • Robert Naumann
  • Christoph Förster
  • Katja Heinze
Hosting institution
Universitätsbibliothek Mainz
Sammlungen
  • DFG-491381577-D
Resource version
Published version
DOI
10.1039/d2sc06984a
File(s) embargoed
false
Open access
true
ISSN
2041-6539
Ausgabe der Veröffentlichung
10
Zeitschrift
Chemical science
Schlüsselwörter
  • 540 Chemie
  • 540 Chemistry and allied sciences
Sprache
eng
Open access status
Open Access
Paginierung
2489 - 2500
Datum der Veröffentlichung
2023
Public URL
https://openscience.ub.uni-mainz.de/handle/20.500.12030/8952
Herausgeber
RSC
Datum der Datenerfassung
2023
Datum, an dem der Datensatz öffentlich gemacht wurde
2023
Zugang
Public
Titel
Excited state energy landscape of phosphorescent group 14 complexes
Ausgabe der Zeitschrift
14

Files

excited_state_energy_landscap-20230317142819605.pdf

Datenquelle: OPENSCIENCE.UB

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