Influence of Keto Groups on the Optical, Electronic, and Electroluminescent Properties of Random Fluorenone-Containing Poly(fluorenylene-vinylene)s (Articolo in rivista)

Type

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

Label

• Influence of Keto Groups on the Optical, Electronic, and Electroluminescent Properties of Random Fluorenone-Containing Poly(fluorenylene-vinylene)s (Articolo in rivista) (literal)

Anno

• 2008-01-01T00:00:00+01:00 (literal)

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

• 10.1021/jp806879c (literal)

Alternative label

• Roberto Grisorio, Claudia Piliego, Marinella Striccoli, Pinalysa Cosma, Paola Fini, Giuseppe Gigli, Piero Mastrorilli, Gian Paolo Suranna e Cosimo Francesco Nobile (2008)
  Influence of Keto Groups on the Optical, Electronic, and Electroluminescent Properties of Random Fluorenone-Containing Poly(fluorenylene-vinylene)s
  in Journal of physical chemistry. C
  (literal)

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

• Roberto Grisorio, Claudia Piliego, Marinella Striccoli, Pinalysa Cosma, Paola Fini, Giuseppe Gigli, Piero Mastrorilli, Gian Paolo Suranna e Cosimo Francesco Nobile (literal)

Pagina inizio

• 20076 (literal)

Pagina fine

• 20087 (literal)

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

• 112 (literal)

Rivista

• Journal of physical chemistry. C (Rivista)

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

• 50 (literal)

Note

• ISI Web of Science (WOS) (literal)

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

• \"[Grisorio, Roberto; Mastrorilli, Piero; Suranna, Gian Paolo; Nobile, Cosimo Francesco] Politecn Bari, DIAC, I-70125 Bari, Italy; [Piliego, Claudia; Gigli, Giuseppe] INFM, CNR, Natl Nanotechnol Labs, Lecce, Italy; [Piliego, Claudia] ISUFI, Sez Nanosci, Lecce, Italy; [Striccoli, Marinella; Fini, Paola] CNR, IPCF, Sede Bari, I-70126 Bari, Italy; [Cosma, Pinalysa] Univ Bari, Dipartmento Chim, Bari, Italy; [Gigli, Giuseppe] Univ Salento, Dipartimento Ingn Innovaz, Lecce, Italy (literal)

Titolo

• Influence of Keto Groups on the Optical, Electronic, and Electroluminescent Properties of Random Fluorenone-Containing Poly(fluorenylene-vinylene)s (literal)

Abstract

• This study deals with the effect that the incorporation of 2,7-fluorenone into the polymer backbone of a poly(fluorenylene-vinylene) exerts on its photophysical properties. The synthesis of a series of random poly(fluorenylene-vinylene)s containing fluorenone at 10, 5, 3, 1% mol/mol ratio with respect to fluorene units (PFVK1-4) was achieved by the Suzuki-Heck reaction cascade between potassium vinyl trifluoroborate and the equivalent quantity of the suitable feed of the corresponding dibromoaryl comonomers in different ratios. The polymers were characterized by H-1 NMR, IR, TGA, DSC, cyclic voltammetry, and UV-vis as well as stationary and time-resolved PL both in solution and in the solid state. In chloroform solution, PFVK1-4 show an emission originating from the PFV backbone while no fluorenone emission could be detected. Moreover, the presence of fluorenone lowers the efficiency quantum yields that inversely follow the fluorenone/fluorene ratio. Conversely, in the solid state, a complete energy transfer occurs and fluorenone acts as the only luminophor even in PFVK1, containing it only in 1% amount respect to fluorene. Consequently, in the solid state PFVK1-4 are all yellow-orange emitters in the solid state. The yellow-orange fluorescence of the obtained polymers in the solid state was compared to the optical behavior of the monodispersed compound 2,7-distyrylfluorenone (DSF). The analysis of the fluorescence decay pathways of the molecules suggests that, differently from DSF, the low-energy emission in the polymers does not originate from a cofacial interaction between fluorenones units. On the contrary, in addition to the fluorenone emission, complex interactions between the fluorenone luminophors and the poly(fluorenylene-vinylene) matrix have to be taken into account for a rationalization of the photophysical properties of these fluorenone-containing polymers in the solid state. Notwithstanding the presence of carbonyl-containing units, usually considered deleterious for the emission properties of poly(arylene-vinylene)s, PFVK1-4 show potential as emitting layers in yellow-orange OLEDs, exhibiting luminances up to 1387 cd/m(2) and current efficiencies as high as 0.15 cd/A. (literal)

Prodotto di

• Strutture ad alta organizzazione gerarchica realizzate mediante approcci di tipo biologico e chimico, per lo studio e la progettazione di materiali e sistemi ibridi di interesse fotochimico (MD.P01.011.001) (Modulo)
• Istituto per i processi chimico-fisici (IPCF) (Istituto)

Autore CNR

• GIUSEPPE GIGLI (Unità di personale esterno)
• MARINELLA STRICCOLI (Persona)
• PAOLA FINI (Persona)

Insieme di parole chiave

• Parole chiave di "Influence of Keto Groups on the Optical, Electronic, and Electroluminescent Properties of Random Fluorenone-Containing Poly(fluorenylene-vinylene)s" (Insieme di parole chiave)

Incoming links:

Prodotto

• Istituto per i processi chimico-fisici (IPCF) (Istituto)
• Strutture ad alta organizzazione gerarchica realizzate mediante approcci di tipo biologico e chimico, per lo studio e la progettazione di materiali e sistemi ibridi di interesse fotochimico (MD.P01.011.001) (Modulo)

Autore CNR di

• MARINELLA STRICCOLI (Persona)
• PAOLA FINI (Persona)
• GIUSEPPE GIGLI (Unità di personale esterno)

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

• Journal of physical chemistry. C (Rivista)

Insieme di parole chiave di

• Parole chiave di "Influence of Keto Groups on the Optical, Electronic, and Electroluminescent Properties of Random Fluorenone-Containing Poly(fluorenylene-vinylene)s" (Insieme di parole chiave)