Structure–property relationship of 4-substituted-spirobifluorenes as hosts for phosphorescent organic light emitting diodes: an overview

Abstract

To cite this version:Cyril Poriel, Joëlle Rault-Berthelot. Structure-property relationship of 4-substituted-spirobifluorenes as hosts for phosphorescent organic light emitting diodes: an overview. Journal of Materials Chemistry C, Royal Society of Chemistry, 2017, 5 (16) AbstractThe aim of the present review is to report the state of the art of an emerging family of molecules, namely the 4-substituted spirobifluorenes (SBFs). The syntheses, physico-chemical and photophysical properties and applications as host in Phosphorescent Organic Light-Emitting diodes (PhOLEDs) are described through a structure-properties relationship approach. If the substitution in position 2 of a SBF core has widely been developed, the substitution in position 4 is very recent (less than that 10 years) and still need to be explored.

[4]Cyclo‐N‐ethyl‐2,7‐carbazole: Synthesis, Structural, Electronic and Charge Transport Properties

“…[18][19][20][21][22] Regardingt he linear organic semiconductors, the bridge has as ignificant impacto nt he structuralp roperties (by notably rigidifying and flattening the molecular structure), which, in turn, modify the electronic properties. [18][19][20][21][22] Regardingt he linear organic semiconductors, the bridge has as ignificant impacto nt he structuralp roperties (by notably rigidifying and flattening the molecular structure), which, in turn, modify the electronic properties.…”

[4]Cyclofluorene: Unexpected Influence of Alkyl Chain Length

“…Of all the building units used in organic electronics, the fluorene undoubtedly holds a particular place notably due to its remarkable fluorescence properties. Its chemistry is at the origin of the rise of Organic Light‐Emitting Diodes . The first examples of cyclofluorenes have been reported in late 2015 and in an almost concomitant manner by the groups of Yamago and Huang .…”

Cyclization of Terphenyl‐Bisfluorenols: A Mechanistic Study of the Regioselectvity

“…For the last thirty years of research in material science, spirobifluorene-based compounds have been extensively studied for applicationsi no rganic electronicsa nd especially in organic light-emitting diodes (OLED). [1][2][3] The incorporation of spiro linkagesi ns mall molecular units is nowadays ap owerful molecular technique to design efficient and stable organic semiconductors:f luorophores for OLEDs, [3][4][5][6][7][8] high-triplet host materials forp hosphorescent OLEDs, [2,[9][10][11][12] thermally activated delayed fluorescenceh osts, [13][14][15] and electron-donor [16][17][18] or nonfullerenea cceptors [19][20][21][22] for solar cells. The spirobifluorenef ragment combines the physical advantages of an orthogonal spiro configuration (high thermala nd morphological stability) and the appealing properties of the fluorene unit (e.g.…”