Polycarbazole-based networks made by photo-crosslinking for hole transporting layers of OLED devices

Grigalevičius, Saulius; Zhang, Baohua; Xie, Zhiyuan; Förster, Michael; Scherf, Ullrich

doi:10.1016/j.orgel.2011.08.018

Cited by 37 publications

(14 citation statements)

References 16 publications

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“…For related compounds, see: Grigalevicius et al (2007); Cui et al (2009); Tian et al (2010); Klejevskaja et al (2007). For their applications, see: Zhang et al (2009); Zhong'an et al (2010); Lu et al (2006); Grigalevicius et al (2006Grigalevicius et al ( , 2011. Mo K radiation = 5.37 mm À1 T = 293 K 0.23 Â 0.21 Â 0.18 mm…”

Section: Related Literaturementioning

confidence: 99%

3,6-Diiodo-9H-carbazole

2012

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In the title compound, C12H7I2N, the tricyclic aromatic ring system is essentially planar, with an r.m.s. deviation of 0.0272 Å. The two I atoms are marginally out of plane, with the C—I bonds angled at 3.9 (2) and 1.1 (2)° with respect to the planes of their respective benzene rings, above and below the plane of the carbazole ring system. No classical hydrogen bonds are observed in the crystal structure.

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Section: Related Literaturementioning

confidence: 99%

3,6-Diiodo-9H-carbazole

2012

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“…Carbazole is one of the aromatic heterocyclic organic compounds that could lead to the formation of a conducting polymer film by oxidation. Resulting carbazole-based conjugated polymer films can be used as components of sensors (Joshi et al, 2014;Vedarajan et al, 2014), batteries (Saraswathi et al, 1999), OLED (Grigalevicius et al, 2011;Srivastava and Chakrabarti, 2015), or electrochromic devices (Hu et al, 2013;Hsiao and Lin, 2016), mainly because of their electron-donating nature, high photoconductivity and strong fluorescence.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Polycarbazoles Thin Films Prepared by Electrochemical Oxidation of Synthesized Carbazole Derivatives

et al. 2019

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Polycarbazole and its derivatives have advantages of good environmental stability, electrochromic properties and photoconductivity which have attracted considerable attention because of their potential industrial applications in electroluminescent applications, rechargeable batteries, and light emitting diodes. They have the possibility of different position substitution (carbon C 3-C 3 ' or N) that lead to different electropolymerization behaviors. However, the N position facilitates the grafting of various derivatives of interest and permits not to modify so much the radical cation formation during electropolymerization. In this paper, carbazole and its derivatives were electrochemically oxidized in acetonitrile solutions leading to the formation of thin polymer films. The morphological features and electrochemical properties of the as-formed polymer films were investigated in detail. Thanks to these experiments, the influence of the substitution on the properties of the polymer films was evidenced and discussed. In addition, fast electrochemistry experiments were carried out on platinum microelectrodes within 50-1,000 V/s scan speed range. Reactivity of carbazole derivatives radical cations and dimers was investigated through these experiments. Thermodynamic and kinetic information (e.g., redox standard potential, heterogeneous, and dimerization rate constants) was extracted after coupling with electrochemical simulations.

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“…Those techniques usually involve UV or thermal crosslinking reaction and these approaches were proved as useful tools for application on charge injecting, transporting, blocking and emitting layers of OLEDs [9][10][11]. Both polymers and monomer precursors were used for obtaining the crosslinked polymer films [12][13][14]. Carbazole derivatives are widely used for the preparation of cross-linked electroactive layers, due to simplicity of introduction of reactive functional groups into carbazole moiety and due to valuable properties of carbazole derivatives, such as high hole-mobilities and high photoluminescence quantum yields [11,12,14,15].…”

Section: Introductionmentioning

confidence: 99%

Fluorescent thiol-epoxy thermosets obtained from diglycidylether of bisphenol A and carbazole based diepoxy monomer

Korychenska

Guzmán

Serra

et al. 2017

Reactive and Functional Polymers

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A new epoxy resin containing carbazole moieties was synthesized and added in several proportions to diglycidylether of bisphenol A (DGEBA) and trimethylolpropane tris(3-mercaptopropionate) (TTMP) formulations that were thermally cured by thiol-epoxy click reaction. The curing was catalyzed by a latent amine precursor, which after triggering at high temperature liberates the amine that enables the formation of thiolate groups. The curing process of the different formulations was monitored by calorimetric analysis, which allowed to observe that the increase of the proportion of the synthesized epoxy resin with carbazole groups in the formulation decreased the curing rate. However, all these formulations cured quickly after triggering, which make them adequate for the formation of layers in multilayer devices.\ud \ud Thermal characteristics of the obtained thermosets were determined by calorimetric, thermomechanical and thermogravimetric analysis. The obtained thermosets have good thermal stability. Their glass transition temperature increased when the proportion of the carbazole containing resin was increased in the formulation. The photophysical properties of the thermoset films were studied and it was proved that they exhibit fluorescence in the range of 352 to 369 °C.Postprint (author's final draft

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Polycarbazole-based networks made by photo-crosslinking for hole transporting layers of OLED devices

Cited by 37 publications

References 16 publications

3,6-Diiodo-9H-carbazole

3,6-Diiodo-9H-carbazole

Investigation of Polycarbazoles Thin Films Prepared by Electrochemical Oxidation of Synthesized Carbazole Derivatives

Fluorescent thiol-epoxy thermosets obtained from diglycidylether of bisphenol A and carbazole based diepoxy monomer

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