Nondestructive Photoluminescence Read-Out by Intramolecular Electron Transfer in a Perylene Bisimide-Diarylethene Dyad (Articolo in rivista)

Type
Label
  • Nondestructive Photoluminescence Read-Out by Intramolecular Electron Transfer in a Perylene Bisimide-Diarylethene Dyad (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1002/chem.201201484 (literal)
Alternative label
  • Berberich, M (Berberich, Martin); Natali, M (Natali, Mirco); Spenst, P (Spenst, Peter); Chiorboli, C (Chiorboli, Claudio); Scandola, F (Scandola, Franco); Wurthner, F (Wuerthner, Frank) (2012)
    Nondestructive Photoluminescence Read-Out by Intramolecular Electron Transfer in a Perylene Bisimide-Diarylethene Dyad
    in Chemistry - A European Journal; WILEY-V C H VERLAG GMBH,, D-69451 WEINHEIM, (Germania)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Berberich, M (Berberich, Martin); Natali, M (Natali, Mirco); Spenst, P (Spenst, Peter); Chiorboli, C (Chiorboli, Claudio); Scandola, F (Scandola, Franco); Wurthner, F (Wuerthner, Frank) (literal)
Pagina inizio
  • 13651 (literal)
Pagina fine
  • 13664 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 18 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 14 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 43 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Univ Ferrara, Dipartimento Chim, I-44100 Ferrara, Italy Univ Wurzburg, Inst Organ Chem, D-97074 Wurzburg, Germany Univ Wurzburg, Ctr Nanosyst Chem, D-97074 Wurzburg, Germany ISOF CNR, Sez Ferrara, I-44100 Ferrara, Italy (literal)
Titolo
  • Nondestructive Photoluminescence Read-Out by Intramolecular Electron Transfer in a Perylene Bisimide-Diarylethene Dyad (literal)
Abstract
  • A novel, highly stable photochromic dyad 3 based on a perylene bisimide (PBI) fluorophore and a diarylethene (DAE) photochrome was synthesized and the optical and photophysical properties of this dyad were studied in detail by steady-state and time-resolved ultrafast spectroscopy. This photochromic dyad can be switched reversibly by UV-light irradiation of its ring-open form 3?o leading to the ring-closed form 3?c, and back reaction of 3?c to 3?o by irradiation with visible light. Solvent-dependent fluorescence studies revealed that the emission of ring-closed form 3?c is drastically quenched in solvents of medium (e.g., chloroform) to high (e.g., acetone) polarities, while the emission of the ring-open form 3?o is appreciably quenched only in highly polar solvents like DMF. The strong fluorescence quenching of 3?c is attributed to a photoinduced electron-transfer (PET) process from the excited PBI unit to ring-closed DAE moiety, as this process is thermodynamically highly favorable with a Gibbs free energy value of -0.34 eV in dichloromethane. The electron-transfer mechanism for the fluorescence quenching of ring-closed 3?c is substantiated by ultrafast transient measurements in dichloromethane and acetone, revealing stabilization of charge-separated states of 3?c in these solvents. Our results reported here show that the new photochromic dyad 3 has potential for nondestructive read-out in write/read/erase fluorescent memory systems (literal)
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