http://www.cnr.it/ontology/cnr/individuo/prodotto/ID288800
Luminescence Properties of 1,8-Naphthalimide Derivatives in Solution, in Their Crystals, and in Co-crystals: Toward Room-Temperature Phosphorescence from Organic Materials (Articolo in rivista)
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- Label
- Luminescence Properties of 1,8-Naphthalimide Derivatives in Solution, in Their Crystals, and in Co-crystals: Toward Room-Temperature Phosphorescence from Organic Materials (Articolo in rivista) (literal)
- Anno
- 2014-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1021/jp5049309 (literal)
- Alternative label
Ventura, Barbara; Bertocco, Alessio; Braga, Dario; Catalano, Luca; d'Agostino, Simone; Grepioni, Fabrizia; Taddei, Paola (2014)
Luminescence Properties of 1,8-Naphthalimide Derivatives in Solution, in Their Crystals, and in Co-crystals: Toward Room-Temperature Phosphorescence from Organic Materials
in Journal of physical chemistry. C
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Ventura, Barbara; Bertocco, Alessio; Braga, Dario; Catalano, Luca; d'Agostino, Simone; Grepioni, Fabrizia; Taddei, Paola (literal)
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- ISI Web of Science (WOS) (literal)
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- Ist ISOF CNR; University of Bologna; University of Bologna (literal)
- Titolo
- Luminescence Properties of 1,8-Naphthalimide Derivatives in Solution, in Their Crystals, and in Co-crystals: Toward Room-Temperature Phosphorescence from Organic Materials (literal)
- Abstract
- Crystalline 1,8-naphthalimide derivatives bearing a bromine atom at the 4-position and a 2-, 3-, or 4-methylpyridine at the imidic N-position have been synthesized, and their co-crystals with the coformer 1,4-diiodotetrafluorbenzene have been obtained via mechanochemistry. The structure of crystals and co-crystals has been characterized by means of X-ray diffraction and Raman and IR analysis. The luminescence properties of the derivatives have been explored both in solution and in their solid crystals and co-crystals. All of the compounds exhibit weak fluorescence in air-equilibrated solutions at room temperature and both fluorescence and phosphorescence at low temperature. In air-free solvent, all of the derivatives show phosphorescence at room temperature, at variance with the unsubstituted 1,8-naphthalimide model. Solid crystals display a red-shifted fluorescence with an increased emission quantum yield as compared to solution, whereas co-crystals show different behaviors. For all of the solid compounds, phosphorescence could be observed at room temperature by means of a gated detection. The dependence of the luminescence features of the solid materials on the intermolecular interactions that occur in the lattice is discussed. (literal)
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