We report the synthesis and photophysical characterization of four 9,10-disubstituted diphenylanthracenes with specific modifications of the model backbone which involve both the 9,10 para substituents at the phenyl rings and the substitution with carbon-carbon triple bonds. The effects of such modifications on the photoluminescence and electroluminescence properties have been investigated on the basis of the diphenylanthracene molecular characteristics and in view of application to light-emitting devices. We have found that the substitution with the carbon-carbon triple bonds at the two 9,10-phenyls noticeably alters the electronic states of the reference molecule, also introducing a certain degree of sensitivity to the phenyl substituents, which improves the tunability of the optical emission. Differently, the 9,10 para substituents produce minor changes in the single-molecule properties, due to the lack of electronic conjugation across the 9,10-phenyls. However, even a single nitro substituent in the phenyl para position produces the formation of excimers, which appreciably reduces the optical quantum efficiency. These properties are maintained in solid-state blends and simple spin-coated bilayer electroluminescent devices have been fabricated.

Pizzoferrato, R., Tagliatesta, P., Schillaci, C., Prosposito, P., Angelis, R. (2015). Synthesis and Photophysical Properties of 9,10-Disubstituted Anthracenes. MATERIALS SCIENCES AND APPLICATIONS, 06(11), 943-952 [10.4236/msa.2015.611095].

Synthesis and Photophysical Properties of 9,10-Disubstituted Anthracenes

PIZZOFERRATO, ROBERTO;TAGLIATESTA, PIETRO;PROSPOSITO, PAOLO;
2015

Abstract

We report the synthesis and photophysical characterization of four 9,10-disubstituted diphenylanthracenes with specific modifications of the model backbone which involve both the 9,10 para substituents at the phenyl rings and the substitution with carbon-carbon triple bonds. The effects of such modifications on the photoluminescence and electroluminescence properties have been investigated on the basis of the diphenylanthracene molecular characteristics and in view of application to light-emitting devices. We have found that the substitution with the carbon-carbon triple bonds at the two 9,10-phenyls noticeably alters the electronic states of the reference molecule, also introducing a certain degree of sensitivity to the phenyl substituents, which improves the tunability of the optical emission. Differently, the 9,10 para substituents produce minor changes in the single-molecule properties, due to the lack of electronic conjugation across the 9,10-phenyls. However, even a single nitro substituent in the phenyl para position produces the formation of excimers, which appreciably reduces the optical quantum efficiency. These properties are maintained in solid-state blends and simple spin-coated bilayer electroluminescent devices have been fabricated.
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/01 - Fisica Sperimentale
Settore FIS/07 - Fisica Applicata(Beni Culturali, Ambientali, Biol.e Medicin)
Settore CHIM/03 - Chimica Generale e Inorganica
English
Blue Material, Electroluminescence; PVK; 9,10-Diphenylanthracene; Organic Light-Emitting Devices
Pizzoferrato, R., Tagliatesta, P., Schillaci, C., Prosposito, P., Angelis, R. (2015). Synthesis and Photophysical Properties of 9,10-Disubstituted Anthracenes. MATERIALS SCIENCES AND APPLICATIONS, 06(11), 943-952 [10.4236/msa.2015.611095].
Pizzoferrato, R; Tagliatesta, P; Schillaci, C; Prosposito, P; Angelis, R
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/131101
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