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Publikováno v:
Advanced Functional Materials. 19:2147-2154
Here, the optical properties of a series of structurally well-defined model compounds for oxidatively degraded poly(dialkylfluorenes) (PFs) are reported. Specifically, linear compounds comprising one, two, or four dihexylfluorene (F) moieties togethe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::86102a20ed3ae3f06eab5b15f9d61cd2
https://doi.org/10.1002/adfm.200801792
https://doi.org/10.1002/adfm.200801792
Autor:
Pablo G. Etchegoin, Mariano Campoy-Quiles, Donal D. C. Bradley, G. Heliotis, Ruidong Xia, M. Ariu, Martina Pintani
Publikováno v:
Advanced Functional Materials. 15:925-933
Variable-angle spectroscopic ellipsometry (VASE) has been applied to five polyfluorene gain media. The ellipsometric data have been analyzed using an electronic model based on critical points of zero dimension, i.e., an exciton model. The optical con
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b225659581fd9f791c792198d953c6b
https://doi.org/10.1002/adfm.200400121
https://doi.org/10.1002/adfm.200400121
Autor:
Marc Sims, M. Koeberg, Donal D. C. Bradley, Aristidis Asimakis, Martin Grell, David G. Lidzey, M. Ariu
Publikováno v:
Advanced Functional Materials. 14:765-781
We present a careful study of the effects of photo-oxidation on the emissive properties of poly(9,9-dioctylfluorene) (PFO) that addresses important issues raised by a recent flurry of publications concerning the degradation of blue light-emitting, fl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c62b689679e4dff2e93bc85faad9c56
https://doi.org/10.1002/adfm.200305149
https://doi.org/10.1002/adfm.200305149
Publikováno v:
Journal of Physics: Condensed Matter. 14:9975-9986
We have measured the temperature-dependent photoluminescence quantum yields (PLQYs) of poly(9, 9-dioctylfluorene) (PFO) films with four morphologies, namely as-spin-coated (SC) glass, quenched nematic glass, crystalline, and vapour-treated SC glass c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3a8353519016cea4f569d6a4cc84e53b
https://doi.org/10.1088/0953-8984/14/42/310
https://doi.org/10.1088/0953-8984/14/42/310
Publikováno v:
Synthetic Metals. 116:217-221
The polymer poly(9,9′-dioctyl fluorene) (F8) can be easily driven between a number of different structural phases by different thermal or solvent treatments. The phases which we have identified include (i) as-spin-coated, (ii) semi-crystalline, (ii
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d8f0aa09b0736b32f9edc57f48e60633
https://doi.org/10.1016/s0379-6779(00)00456-2
https://doi.org/10.1016/s0379-6779(00)00456-2
Publikováno v:
Synthetic Metals. :607-610
Raman spectroscopy has been performed on samples of dioctyl substituted polyfluorene (PFO) with four morphologies: (i) as spin-coated, (ii) crystalline, (iii) glassy, (iv) prepared so as to contain a fraction of material with an intra-chain ordered c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b58d8a178a2922ce4f51805373614eb0
https://doi.org/10.1016/s0379-6779(99)00320-3
https://doi.org/10.1016/s0379-6779(99)00320-3
Autor:
Ma Loi, Antonio Andrea Mura, Wilhelm Graupner, Günther Leising, A. Piaggi, F. Meghdadi, M Ariu, Giovanni Bongiovanni, L. Rossi
Publikováno v:
Scopus-Elsevier
Chemical Physics Letters, 313(3), 405-410. ELSEVIER SCIENCE BV
Chemical Physics Letters, 313(3), 405-410. ELSEVIER SCIENCE BV
The optical properties of an ordered para-hexaphenyl film, grown with molecules lying parallel to the substrate, are investigated. The absorption spectrum exhibits two peaks at 3.1 (L) and 4.35 (H) eV, featuring a different degree of polarization. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4f7da8fe911905a2aac99ecaa21e089e
https://doi.org/10.1016/s0009-2614(99)00982-3
https://doi.org/10.1016/s0009-2614(99)00982-3
Autor:
Ian H. White, M. A. Reilly, Richard V. Penty, C.N. Morgan, Donal D. C. Bradley, M. C. Ramon, Ruidong Xia, M. Ariu, C Marinelli
Publikováno v:
Applied Physics Letters. 85:5137-5139
We report optical signal amplification in a solid-state dye-doped polymer with a rib waveguide structure. A 625nm pulsed signal and a collinear 575nm pump are coupled into a 1μm×120μm poly(methyl methacrylate) waveguide doped with 1% by weight Rho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8834160a6346011653fec6f4032699f1
https://doi.org/10.1063/1.1828578
https://doi.org/10.1063/1.1828578