Anchor-Functionalized Push-Pull-Substituted Bis(tridentate) Ruthenium(II) Polypyridine Chromophores: Photostability and Evaluation as Photosensitizers

Publication type:
Journal article
Metadata:
Autoren
  • Aaron Breivogel
  • Sanghyuk Wooh
  • Jan Dietrich
  • Tea Yon Kim
  • Yong Soo Kang
  • Kookheon Char
  • Katja Heinze
Autoren-URL
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000337562100015&DestLinkType=FullRecord&DestApp=WOS_CPL
DOI
10.1002/ejic.201402091
eISSN
1099-0682
Externe Identifier
  • Clarivate Analytics Document Solution ID: AJ3JJ
ISSN
1434-1948
Ausgabe der Veröffentlichung
16
Zeitschrift
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
Schlüsselwörter
  • Ruthenium
  • Tridentate ligands
  • Sensitizers
  • Photochemistry
  • N ligands
Paginierung
2720 - 2734
Datum der Veröffentlichung
2014
Status
Published
Titel
Anchor-Functionalized Push-Pull-Substituted Bis(tridentate) Ruthenium(II) Polypyridine Chromophores: Photostability and Evaluation as Photosensitizers
Sub types
  • Review

Data source: Web of Science (Lite)

Other metadata sources:
Abstract
<jats:title>Abstract</jats:title><jats:p>Stable push‐pull substituted heteroleptic bis(tridentate) ruthenium(II) polypyridine complexes with COOH or 2,2′‐bipyridine anchor groups have been prepared and characterized by <jats:sup>1</jats:sup>H, <jats:sup>13</jats:sup>C and <jats:sup>15</jats:sup>N NMR 1D and 2D spectroscopy, infrared spectroscopy, elemental analysis, high‐resolution ESI mass spectrometry, electrochemistry, UV/Vis absorption spectroscopy, luminescence spectroscopy, and density functional calculations. The complexes feature a pronounced electronic directionality and high absorption wavelengths up to <jats:italic>λ</jats:italic><jats:sub>max</jats:sub> = 544 nm extending to 720 nm as a result of favorable push‐pull substitutions. A remarkable photostability in the presence of water and coordinating ions (I<jats:sup>–</jats:sup>) was discovered for the tridentate complexes when compared with the standard ruthenium sensitizer N719 and tris(bidentate) [Ru(bpy)<jats:sub>3</jats:sub>](PF<jats:sub>6</jats:sub>)<jats:sub>2</jats:sub>, which are highly photolabile under the same conditions (photodissociation/photosubstitution). The complexes were studied as photosensitizers in dye‐sensitized solar cells. The incident photon‐to‐current conversion efficiency follows the absorption spectra into the NIR region. However, the high positive charge of the complexes (2+) favors the recombination of the injected electrons with I<jats:sub>3</jats:sub><jats:sup>–</jats:sup> of the redox electrolyte, which is evidenced by high dark currents and short electron recombination lifetimes, leading to low cell performances compared with cells with the negatively charged N719 dye.</jats:p>
Autoren
  • Aaron Breivogel
  • Sanghyuk Wooh
  • Jan Dietrich
  • Tea Yon Kim
  • Yong Soo Kang
  • Kookheon Char
  • Katja Heinze
DOI
10.1002/ejic.201402091
eISSN
1099-0682
ISSN
1434-1948
Ausgabe der Veröffentlichung
16
Zeitschrift
European Journal of Inorganic Chemistry
Sprache
en
Online publication date
2014
Paginierung
2720 - 2734
Datum der Veröffentlichung
2014
Status
Published
Herausgeber
Wiley
Herausgeber URL
http://dx.doi.org/10.1002/ejic.201402091
Datum der Datenerfassung
2023
Titel
Anchor‐Functionalized Push‐Pull‐Substituted Bis(tridentate) Ruthenium(II) Polypyridine Chromophores: Photostability and Evaluation as Photosensitizers
Ausgabe der Zeitschrift
2014

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