Extreme Tuning of Redox and Optical Properties of Cationic Cyclometalated Iridium(III) Isocyanide Complexes (Articolo in rivista)

Type

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

Label

• Extreme Tuning of Redox and Optical Properties of Cationic Cyclometalated Iridium(III) Isocyanide Complexes (Articolo in rivista) (literal)

Anno

• 2013-01-01T00:00:00+01:00 (literal)

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

• 10.1021/om300894m (literal)

Alternative label

• Shavaleev, Nail M. and Monti, Filippo and Scopelliti, Rosario and Baschieri, Andrea and Sambri, Letizia and Armaroli, Nicola and Graetzel, Michael and Nazeeruddin, Mohammad K. (2013)
  Extreme Tuning of Redox and Optical Properties of Cationic Cyclometalated Iridium(III) Isocyanide Complexes
  in Organometallics
  (literal)

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

• Shavaleev, Nail M. and Monti, Filippo and Scopelliti, Rosario and Baschieri, Andrea and Sambri, Letizia and Armaroli, Nicola and Graetzel, Michael and Nazeeruddin, Mohammad K. (literal)

Pagina inizio

• 460 (literal)

Pagina fine

• 467 (literal)

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

• 32 (literal)

Rivista

• Organometallics (Rivista)

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

• 2 (literal)

Note

• ISI Web of Science (WOS) (literal)

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

• Shavaleev, NM (Reprint Author), Ecole Polytech Fed Lausanne, Lab Photon & Interfaces, CH-1015 Lausanne, Switzerland. Shavaleev, Nail M.; Scopelliti, Rosario; Graetzel, Michael; Nazeeruddin, Mohammad K., Ecole Polytech Fed Lausanne, Lab Photon & Interfaces, CH-1015 Lausanne, Switzerland. Monti, Filippo; Armaroli, Nicola, CNR, Ist Sintesi Organ & Fotoreattivita, Mol Photosci Grp, I-40129 Bologna, Italy. Baschieri, Andrea; Sambri, Letizia, Univ Bologna, Dept Organ Chem A Mangini, I-40136 Bologna, Italy. (literal)

Titolo

• Extreme Tuning of Redox and Optical Properties of Cationic Cyclometalated Iridium(III) Isocyanide Complexes (literal)

Abstract

• We report seven heteroleptic cationic iridium(III) complexes with cyclometalating N-arylazoles and alkyl/aryl isocyanides, [((CN)-N-boolean AND)(2)Ir(CNR)(2)](CF3SO3), and characterize two of them by crystal structure analysis. The complexes are air- and moisture-stable white solids that have electronic transitions at very high energy with absorption onset at 320-380 nm. The complexes are difficult to reduce and oxidize; they exhibit irreversible electrochemical processes with peak potentials (against ferrocene) at -2.74 to -2.37 V (reduction) and 0.99-1.56 V (oxidation) and have a large redox gap of 3.49-4.26 V. The reduction potential of the complex is determined by the azole heterocycle (pyrazole or indazole) and by the isocyanide (tert-butyl or 2,6-dimethylphenyl) and the oxidation potential by the Ir-aryl fragment [aryl = 2',4'-R-2-phenyl (R = H/F), 9',9'-dihexy1-2'-fluorenyl]. Three of the complexes exhibit phosphorescence in argon-saturated dichloromethane and acetonitrile solutions at room temperature with 0-0 transitions at 473-478 nm (green color; the emission spectra are solvent-independent), quantum yields of 3-25%, and long excited-state lifetimes of 62-350 mu s. All of the complexes are phosphorescent at 77 K with 0-0 transitions at 387-474 nm (blue to green color). The extremely long calculated radiative lifetimes, 0.5-3.5 ms, confirm that the complexes emit from a cyclometalating-ligand-centered excited state. (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

• NICOLA ARMAROLI (Persona)
• FILIPPO MONTI (Persona)

Insieme di parole chiave

• Parole chiave di "Extreme Tuning of Redox and Optical Properties of Cationic Cyclometalated Iridium(III) Isocyanide Complexes" (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

• NICOLA ARMAROLI (Persona)
• FILIPPO MONTI (Persona)

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

• Organometallics (Rivista)

Insieme di parole chiave di

• Parole chiave di "Extreme Tuning of Redox and Optical Properties of Cationic Cyclometalated Iridium(III) Isocyanide Complexes" (Insieme di parole chiave)