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A new strategy for ...
A new strategy for the improvement of photophysical properties in ruthenium(II) polypyridyl complexes. Synthesis and photophysical and electrochemical characterization of six mononuclear ruthenium(II) bisterpyridine-type complexes
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- Abrahamsson, Maria (author)
- Uppsala universitet,Acceleratormasspektrometrigruppen,Fysikalisk-kemiska institutionen
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- Wolpher, H. (author)
- Stockholms universitet,Institutionen för organisk kemi
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- Johansson, Olof (author)
- Stockholms universitet,Institutionen för organisk kemi
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- Larsson, J. (author)
- Uppsala universitet,Fysikalisk-kemiska institutionen
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- Kritikos, Mikael (author)
- Stockholms universitet,Avdelningen för strukturkemi
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- Eriksson, Lars (author)
- Stockholms universitet,Avdelningen för strukturkemi
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Norrby, P. O. (author)
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- Bergquist, Jonas (author)
- Uppsala universitet,Avdelningen för analytisk kemi
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- Sun, Licheng C. (author)
- Stockholms universitet,Institutionen för organisk kemi
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- Åkermark, Björn (author)
- Stockholms universitet,Institutionen för organisk kemi
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- Hammarström, Leif (author)
- Uppsala universitet,Fysikalisk-kemiska institutionen
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(creator_code:org_t)
- 2005-04-02
- 2005
- English.
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In: Inorganic Chemistry. - : American Chemical Society (ACS). - 0020-1669 .- 1520-510X. ; 44:9, s. 3215-3225
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- The synthesis and characterization of six ruthenium(II) bistridentate polypyridyl complexes is described. These were designed on the basis of a new approach to increase the excited-state lifetime of ruthenium(II) bisterpyridine-type complexes. By the use of a bipyridylpyridyl methane ligand in place of terpyridine, the coordination environment of the metal ion becomes nearly octahedral and the rate of deactivation via ligand-field (i.e., metal-centered) states was reduced as shown by temperature-dependent emission lifetime studies. Still, the possibility to make quasi-linear donor-ruthenium-acceptor triads is maintained in the complexes. The most promising complex shows an excited-state lifet me of tau = 15 ns in alcohol solutions at room temperature, which should be compared to a lifetime of tau = 0.25 ns for [Ru(tpy)(2)](2+). The X-ray structure of the new complex indeed shows a more octahedral geometry than that of [Ru(tpy)(2)](2+). Most importantly, the high excited-state energy was retained, and thus, so was the potential high reactivity of the excited complex, which has not been the case with previously published strategies based on bistridentate complexes.
Subject headings
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Keyword
- transfer excited-states
- molecular-mechanics
- artificial photosynthesis
- luminescence lifetimes
- terpyridine complexes
- tridentate ligands
- ru(ii) complexes
- electron-donor
- photochemistry
- absorption
- Inorganic chemistry
Publication and Content Type
- ref (subject category)
- art (subject category)
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To the university's database
- By the author/editor
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Abrahamsson, Mar ...
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Wolpher, H.
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Johansson, Olof
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Larsson, J.
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Kritikos, Mikael
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Eriksson, Lars
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show more...
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Norrby, P. O.
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Bergquist, Jonas
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Sun, Licheng C.
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Åkermark, Björn
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Hammarström, Lei ...
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Inorganic Chemis ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
- Articles in the publication
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Inorganic Chemis ...
- By the university
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Royal Institute of Technology
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Uppsala University
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Stockholm University