Polytriphenylene Dendrimers: A Unique Design for Blue‐Light‐Emitting Materials

Abstract

Into the blue: A unique family of polytriphenylene dendrimers (see picture) that emit blue light with high photoluminescence quantum yield were synthesized. The triphenylene units are twisted out‐of‐plane, and the highly stiff dendritic backbones prevent intermolecular fluorescence quenching.

The synthesis, physicochemical properties and anodic polymerization of a novel ladder pentaphenylene

“…Despite the recent progress in term of stability for blue OLEDs [9][10][11][12][13][14][15][16][17][18][19], it is still highly challenging to prepare efficient materials, possessing a wide band gap fitting for a blue emission and that might be used in a single layer device to avoid complicated multilayer architecture [18]. The control of properties by synthetic design, for polymers as well as for oligomers, is thus highly important.…”

Synthesis and Characterization of New Thienopyrazine‐cored Dendrimer for Non‐Doped Organic Red Light‐Emitting Diodes

“…[13][14][15][16] Compounds 1 (200 mg, 0.37 mmol) and 2 (1.88 mmol) in 10 mL of o-xylene were stirred and refluxed for 72 h under nitrogen. After cooling to room temperature, the solvent was evaporated under reduced pressure.…”

“…The thienopyrazine-containing core 1 13,14 bearing the terminal ethynyl groups as the reactive sites at the surface of the emissive core, and polyphenylene-substituted cyclopentedieneone 2 15,16 are two most important intermediates and were prepared according to the literature methods. The target dendrimer D2TP was synthesized through Diels-Alder cycloaddition of 2 to 1 in o-xylene at high temperature.…”

Self-assembled multicolor nanoparticles based on functionalized twistacene dendrimer for cell fluorescent imaging

“…For example, Müllen and co-workers synthesized some polyphenylene dendrimers with different central cores and tested their physical property. [41][42][43] The group of Pei developed a new class star-shaped dendrimers based on truxene that could be used as promising candidates for light-harvesting materials. [44][45][46] When twistacenes are implanted into the three-dimensional architectures, the as-formed novel dendrimers can effectively suppress intramolecular and intermolecular π-π stacking in high concentration solution and solid state without sacrificing other physical property.…”