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New paradigm of transition metal polypyridine complex photochemistry

Andersson, Johan LU ; Puntoriero, F ; Serroni, S ; Yartsev, Arkady LU orcid ; Pascher, Torbjörn LU ; Polivka, Tomas LU ; Campagna, S and Sundström, Villy LU (2004) In Faraday Discussions 127. p.295-305
Abstract
Using polarization sensitive ultrafast transient absorption spectroscopy we have studied energy transfer and excited state relaxation pathways in a tetranuclear transition metal [( osmium)( ruthenium)(3)] polypyridine complex. Contrary to the generally accepted picture of transition metal complex photochemistry we find that ultrafast energy transfer ( less than or equal to 60 fs) occurs from the excited singlet MLCT state of the peripheral Ru-chromophores to the central Os-core, in efficient competition with intersystem crossing. Energy transfer between relaxed triplet MLCT states is more than an order of magnitude slower ( 600 fs).
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author
; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Faraday Discussions
volume
127
pages
295 - 305
publisher
Royal Society of Chemistry
external identifiers
  • wos:000223139400018
  • pmid:15471351
  • scopus:5644226412
ISSN
1364-5498
DOI
10.1039/b316160a
language
English
LU publication?
yes
additional info
The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Chemical Physics (S) (011001060)
id
5f82bcdf-eb8f-47b7-bf53-672c2b40575a (old id 138961)
date added to LUP
2016-04-01 12:13:09
date last changed
2022-04-05 19:17:14
@article{5f82bcdf-eb8f-47b7-bf53-672c2b40575a,
  abstract     = {{Using polarization sensitive ultrafast transient absorption spectroscopy we have studied energy transfer and excited state relaxation pathways in a tetranuclear transition metal [( osmium)( ruthenium)(3)] polypyridine complex. Contrary to the generally accepted picture of transition metal complex photochemistry we find that ultrafast energy transfer ( less than or equal to 60 fs) occurs from the excited singlet MLCT state of the peripheral Ru-chromophores to the central Os-core, in efficient competition with intersystem crossing. Energy transfer between relaxed triplet MLCT states is more than an order of magnitude slower ( 600 fs).}},
  author       = {{Andersson, Johan and Puntoriero, F and Serroni, S and Yartsev, Arkady and Pascher, Torbjörn and Polivka, Tomas and Campagna, S and Sundström, Villy}},
  issn         = {{1364-5498}},
  language     = {{eng}},
  pages        = {{295--305}},
  publisher    = {{Royal Society of Chemistry}},
  series       = {{Faraday Discussions}},
  title        = {{New paradigm of transition metal polypyridine complex photochemistry}},
  url          = {{http://dx.doi.org/10.1039/b316160a}},
  doi          = {{10.1039/b316160a}},
  volume       = {{127}},
  year         = {{2004}},
}