A preorganized truxene platform for phosphorescent [Ru(bpy)2] and [Os(bpy)2] metal centers: a clear-cut switch from Förster- to Dexter-type energy transfer mechanism (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• A preorganized truxene platform for phosphorescent [Ru(bpy)2] and [Os(bpy)2] metal centers: a clear-cut switch from Förster- to Dexter-type energy transfer mechanism (Articolo in rivista) (literal)

Anno

• 2010-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1002/chem.200903305 (literal)

Alternative label

• S. Diring; R. Ziessel; F. Barigelletti; A. Barbieri; B. Ventura (2010)
  A preorganized truxene platform for phosphorescent [Ru(bpy)2] and [Os(bpy)2] metal centers: a clear-cut switch from Förster- to Dexter-type energy transfer mechanism
  in Chemistry - A European Journal
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• S. Diring; R. Ziessel; F. Barigelletti; A. Barbieri; B. Ventura (literal)

Pagina inizio

• 9226 (literal)

Pagina fine

• 9236 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 16 (literal)

Rivista

• Chemistry - A European Journal (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note

• DOI: 10.1002/chem.200903305 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

• 30 (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• 1. UdS, ECPM, LCOSA, F-67087 Strasbourg 02, France 2. CNR, ISOF, I-40129 Bologna, Italy (literal)

Titolo

• A preorganized truxene platform for phosphorescent [Ru(bpy)2] and [Os(bpy)2] metal centers: a clear-cut switch from Förster- to Dexter-type energy transfer mechanism (literal)

Abstract

• We report on the synthesis, optical properties and energy-transfer features of a series of transition-metal containing complexes and dyads, based on a pre-organised truxene scaffold. In this series, the [Ru(bpy)3]2+ and [Os(bpy)3]2+ photoactive terminals are coupled to the bridging aromatic truxene core through rigid ethynyl linkers. The photoinduced energy-transfer processes taking place from the Ru- to the Os-based levels, and from the truxene bridging ligand to the terminal-metal chromophores are studied and the pathways and mechanisms are discussed. The photoinduced energy transfer process observed in the dyad proceeds rapidly through: i) an efficient 1L®1Os direct energy transfer followed by intersystem crossing to 3Os, and ii) a fast 1L®1Ru energy-transfer step and subsequent intersystem crossing to 3Ru followed by a 3Ru®3Os energy-transfer process. The first 1L®1Os and 1L®1Ru steps are controlled by a dipole-dipole interaction (Foerster mechanism), whereas the subsequent 3Ru®3Os step proceeds by means of a long range (~24 Å) through-bond mediated Dexter mechanism, facilitated by the conjugation along the bpy-truxene-bpy molecular axis. (literal)

Prodotto di

• Institute for organic syntheses and photoreactivity (ISOF) (Istituto)
• Materiali Avanzati per la COnversione di energia Luminosa (MACOL) (PM.P04.010.001) (Modulo)

Autore CNR

• BARBARA VENTURA (Persona)
• ANDREA BARBIERI (Persona)
• FRANCESCO BARIGELLETTI (Unità di personale interno)

Insieme di parole chiave

• Keywords of "A preorganized truxene platform for phosphorescent [Ru(bpy)2] and [Os(bpy)2] metal centers: a clear-cut switch from Förster- to Dexter-type energy transfer mechanism" (Insieme di parole chiave)

Incoming links:

Prodotto

• Institute for organic syntheses and photoreactivity (ISOF) (Istituto)
• Materiali Avanzati per la COnversione di energia Luminosa (MACOL) (PM.P04.010.001) (Modulo)

Autore CNR di

• FRANCESCO BARIGELLETTI (Unità di personale interno)
• BARBARA VENTURA (Persona)
• ANDREA BARBIERI (Persona)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Chemistry - A European Journal (Rivista)

Insieme di parole chiave di

• Keywords of "A preorganized truxene platform for phosphorescent [Ru(bpy)2] and [Os(bpy)2] metal centers: a clear-cut switch from Förster- to Dexter-type energy transfer mechanism" (Insieme di parole chiave)