Synthesis, characterization, morphological behaviour, and photo- and electroluminescence of highly blue-emitting fluorene-carbazole copolymers with alkyl side-chains of different lengths

Sergent, Alessandra; Zucchi, Gaël; Pansu, Robert; Chaigneau, M.; Geffroy, Bernard; Tondelier, Denis; Ephritikhine, Michel

doi:10.1039/c3tc00060e

Cited by 16 publications

(24 citation statements)

References 62 publications

(74 reference statements)

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“…44 The thickness of the LEP layer was optimised for maximum device performance. 36 This excellent colour stability of the CF1 emission is in contrast to most other deep blue polymers 32 for which there is a shift to less blue emission at maximum brightness (as seen here for CF2). CIE diagrams can be found in the ESI.…”

Section: Pled Device Fabrication and Propertiesmentioning

confidence: 55%

High brightness deep blue/violet fluorescent polymer light-emitting diodes (PLEDs)

et al. 2015

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Section: Pled Device Fabrication and Propertiesmentioning

confidence: 55%

High brightness deep blue/violet fluorescent polymer light-emitting diodes (PLEDs)

et al. 2015

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“…Both PIF and PIC emit in the deep blue range with a peak emission of 416–418 nm. Polyfluorenes and polycarbazoles have red‐shifted PL values compared with our polymers . The PL quantum yields of PIF and PIC in dilute CHCl 3 were calculated to be 60 and 39%, respectively, referenced to the standard, quinine sulfate.…”

Section: Resultsmentioning

confidence: 87%

“…Such polymers have the potential to create organic solar cells, organic light emitting diodes (OLEDs), organic field effect transistors (OFETs), and chemical and biological sensors using such OFETs or OLEDs . Fluorene and carbazole containing conjugated polymers are well‐known as blue light emitters that show promising results in the emissive layers of polymer light emitting diodes (PLEDs) . Among the three color emitters, red, green, and blue in PLEDs, there is a great demand for novel blue emitting materials …”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization, and electrogenerated chemiluminescence of deep blue emitting eumelanin‐inspired poly(indoylenearylene)s for polymer light emitting diodes

Sachinthani¹,

Kaneza²,

Kaudal

et al. 2017

J. Polym. Sci. Part A: Polym. Chem.

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Deep blue emitting copolymers were synthesized by uniting the Eumelanin-inspired indole core with fluorene and carbazole units via Suzuki polymerization. The resulting polymers, PIF and PIC, showed deep blue emission in the range of 416-418 nm and quantum yields of 0.39-0.60. Both polymers exhibited an intense and stable electrogenerated chemiluminescence. Interestingly, deep HOMO levels of 25.71 and 25.61 eV were observed for PIF and PIC, respectively. Solution processed polymer light emitting diodes (PLEDs) were fabricated using the PIF as a guest. PLEDs emitted deep blue light at 418 nm, with the luminous efficiency peaking at 1 Cd/A, given that the photopic response at that wavelength is 0.0151. The electroluminescence of PIF displayed a Commission Internationale de l'Eclairage coordinates of (0.16, 0.07) with a maximum external quantum efficiency of 1.1%. Hence, these materials prove to be promising candidates for the fabrication of deep blue PLEDs.

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“…5-(N,N-Bis-3-(triethoxysilyl)-propyl)ureylphenanthroline (Phen-Si 2 ), 28 poly(9,9-dihexylfluorene-alt-9,9-dioctylfluorene) (PF(6,6-alt-8,8)), 29 and europium thenoyltrifluoroacetylacetonate ([Eu(tta) 3 ]Á xH 2 O) 30 were synthesized as previously described. 5-(N,N-Bis-3-(triethoxysilyl)-propyl)ureylphenanthroline (Phen-Si 2 ), 28 poly(9,9-dihexylfluorene-alt-9,9-dioctylfluorene) (PF(6,6-alt-8,8)), 29 and europium thenoyltrifluoroacetylacetonate ([Eu(tta) 3 ]Á xH 2 O) 30 were synthesized as previously described.…”

Section: Methodsmentioning

confidence: 99%

Visible-emitting hybrid sol–gel materials comprising lanthanide ions: thin film behaviour and potential use as phosphors for solid-state lighting

et al. 2014

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International audienceThe synthesis and characterization, as well as the film-forming and luminescent properties of four visible-emitting hybrid organic-inorganic sol-gel materials are reported. They show thermal stability up to 165°C. Deposition conditions were optimized to coat these materials as homogeneous and transparent thin films (~50 nm) with smooth surface, as probed by AFM. They were specifically designed to emit the primary colors. The blue-emitting material 1 was made up of a polyfluorene derivative embedded in a silica matrix, while the green (2) and red (3)-emissive materials comprise the TbIII and EuIII ions bound to the matrix, respectively. The films showed relatively high emission quantum yields efficiencies, with values of 19% (blue), 46% (green), and 21% (red). The three emitters were used to design a single emissive material (4) that showed emission colors from yellow-green to blue in a wide range of excitation wavelengths (254-380 nm). In particular, white light was obtained after excitation at 340 nm

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Synthesis, characterization, morphological behaviour, and photo- and electroluminescence of highly blue-emitting fluorene-carbazole copolymers with alkyl side-chains of different lengths

Cited by 16 publications

References 62 publications

High brightness deep blue/violet fluorescent polymer light-emitting diodes (PLEDs)

High brightness deep blue/violet fluorescent polymer light-emitting diodes (PLEDs)

Synthesis, characterization, and electrogenerated chemiluminescence of deep blue emitting eumelanin‐inspired poly(indoylenearylene)s for polymer light emitting diodes

Visible-emitting hybrid sol–gel materials comprising lanthanide ions: thin film behaviour and potential use as phosphors for solid-state lighting

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