http://www.cnr.it/ontology/cnr/individuo/prodotto/ID53834
Luminescent Ethynyl-Pyrene Liquid Crystals and Gels for Optoelectronic Devices (Articolo in rivista)
- Type
- Label
- Luminescent Ethynyl-Pyrene Liquid Crystals and Gels for Optoelectronic Devices (Articolo in rivista) (literal)
- Anno
- 2009-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1021/ja908061q (literal)
- Alternative label
Diring, S; Camerel, F; Donnio, B; Dintzer, T; Toffanin, S; Capelli, R; Muccini, M; Ziessel, R (2009)
Luminescent Ethynyl-Pyrene Liquid Crystals and Gels for Optoelectronic Devices
in Journal of the American Chemical Society (Print)
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Diring, S; Camerel, F; Donnio, B; Dintzer, T; Toffanin, S; Capelli, R; Muccini, M; Ziessel, R (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Consiglio Nazionale delle Ricerche (CNR), Istituto per lo Studio dei Materiali
Nanostrutturati (ISMN), Via P. Gobetti 101, I-40129 Bologna, Italy (literal)
- Titolo
- Luminescent Ethynyl-Pyrene Liquid Crystals and Gels for Optoelectronic Devices (literal)
- Abstract
- Two functional ethynyl-pyrene derivatives have been designed and synthesized by di- and tetrasubstitutions
of bromo pyrene derivatives with N-(4-ethynylphenyl)-3,4,5-tris(hexadecyloxy)benzamide
fragments. The photoluminescence wavelength of the pyrene core can be tuned by the substitution pattern
and the state of matter (solid, solution, gel, or liquid crystal). The disubstituted pyrene derivative 1 is not
mesomorphic but produces robust and highly fluorescent gels in DMF, toluene, and cyclohexane. The
well-defined fibers and ropes of the gel states were characterized by SEM and laser scanning confocal
microscopy, and extended over several micrometers. The gels were integrated as active layers in fieldeffect
transistors, which provided good bulk electron and hole charge mobilities as well as light emission
generation. The tetra-substituted pyrene derivative is not a gelator but displays a stable liquid crystalline
phase with 2D hexagonal symmetry between 20 and 200 °C. The pronounced luminescence properties of
the mesophase allow one to observe original mesophase textures with flower-like patterns directly by
fluorescence microscopy without crossed-polarizers. (literal)
- Prodotto di
- Autore CNR
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