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Triheterometallic lanthanide complexes made from kinetically inert lanthanide building blocks

Abstract:
Three molecular structures, each containing three different lanthanide(III) centres, were made by coupling three kinetically inert lanthanide(III) complexes in an Ugi reaction. These 2 kDa molecules were purified by dialysis, and characterised using NMR and luminescence. The photophysical properties of these heterotrimetallic complexes were investigated and are discussed by comparison with simpler, but related, heterobimetallic compounds. It was found that an amino-naphthalene unit inhibits sensitisation of terbium, while the spatial arrangement of the chromophores and lanthanide(III) centres in these molecules inhibited efficient sensitisation of europium. We conclude that the intramolecular collisions required for efficient Dexter energy transfer from the sensitizer to the lanthanide(III) centre can be prevented by steric congestion.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1002/ejic.201700027

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Chemistry
Sub department:
Inorganic Chemistry
Role:
Author
More by this author
Institution:
University of Oxford
Oxford college:
Keble College
Role:
Author



Publisher:
Wiley
Journal:
European Journal of Inorganic Chemistry More from this journal
Volume:
2017
Issue:
15
Pages:
2165–2172
Publication date:
2017-02-02
Acceptance date:
2017-01-31
DOI:
EISSN:
1099-0682
ISSN:
1434-1948


Pubs id:
pubs:675629
UUID:
uuid:53c03be0-1dbb-4622-8740-989397f52ffb
Local pid:
pubs:675629
Source identifiers:
675629
Deposit date:
2017-02-03

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