Emerging applications of curved aromatic compounds

Wong, Wai-Shing; Stępień, Marcin

doi:10.1016/j.trechm.2022.04.005

Cited by 18 publications

(9 citation statements)

References 16 publications

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“…Thus, this work shows not only that [4]C‐Bu‐Cbz can efficiently host a phosphorescent emitter within a PhOLED but also reveals, by comparison with its acyclic counterpart [4]L‐Bu‐Cbz , the strong advantages of cyclic versus linear structures. As the curvature of non‐planar aromatic molecules is known to play a key role in achieving a desired function, [ 25 ] the present finding can provide a new basis to construct high‐performance electronics based on nanohoops.…”

Section: Introductionmentioning

confidence: 93%

[4]‐Cyclo‐2,7‐Carbazole as Host Material in High‐Efficiency Phosphorescent OLEDs: A New Perspective for Nanohoops in Organic Electronics

Brouillac

Lucas

Tondelier

et al. 2022

Advanced Optical Materials

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In the last ten years, the development of -conjugated nanohoops has been considerable owing to their remarkable properties. However, to date, their incorporation in organic electronic devices remains very scarce. In this work, we report the first high performance organic electronic device (i.e. Phosphorescent Organic Light-Emitting Diode PhOLED) incorporating a nanohoop ([4]-cyclo-N-butyl-2,7-carbazole [4]C-Bu-Cbz), revealing their potential in electronics. Thus, using the red phosphor Ir(MDQ) 2 (acac), the [4]C-Bu-Cbz-based PhOLED displays a high External Quantum Efficiency (EQE) of 17.0 %, a Current Efficiency (CE) of 20.6 cd.A -1 and a Power Efficiency (PE) of 25.8 lm.W -1 demonstrating that the charges injection, transport and recombination are particularly efficient. This performance is significantly higher than that of its linear counterpart, N-butyl-2,7quartercarbazole [4]L-Bu-Cbz, which presents an EQE of 11.1 %, a CE of 13.0 cd.A -1 and a PE of 15.7 lm.W -1 . The significant difference, in term of device performance, between cyclic and acyclic compounds provides a new basis to construct high-performance electronic devices. This study, which includes optical, electrochemical, morphological and charge transport properties, shows that nanohoops can be efficiently used as organic semi-conductors in electronics and opens the way to their practical uses in highperformance optoelectronic devices, which is now the next stage of their evolution.

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Section: Introductionmentioning

confidence: 93%

[4]‐Cyclo‐2,7‐Carbazole as Host Material in High‐Efficiency Phosphorescent OLEDs: A New Perspective for Nanohoops in Organic Electronics

Brouillac

Lucas

Tondelier

et al. 2022

Advanced Optical Materials

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“…45,46 Furthermore, history has shown that the emergence of various carbon allotropes has indeed led to the discovery of previously unforeseen and unpredicted functions and applications. 47,48 Doping heteroatoms into a carbonaceous backbone of the -systems is an elegant and efficient method of tuning their basic physicochemical and electronic characteristics. 49,50 In particular, interest in nitrogenembedded, nonplanar polyarenes has gained significant momentum recently, resulting in the construction of some intriguing, mainly positively curved molecules.…”

Section: Introductionmentioning

confidence: 99%

Saddle-shaped aza-nanographene with multiple odd-membered rings

et al. 2023

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“…Thus, a myriad of heteroatomic derivatives have been developed whose features – luminescence, coordinating behavior, electrochemical properties, etc. – clearly eclipse those of all‐carbon architectures [11–20] …”

Section: Introductionmentioning

confidence: 99%

“…-clearly eclipse those of all-carbon architectures. [11][12][13][14][15][16][17][18][19][20] The synthesis of acenes; i. e. linearly-fused hexagonal carbon rings, and their derivatives have received a great deal of attention in the last decades. Since their first discovery by Clar in the 1930s, [21] pentacenes evolved from simple curiosities to become the hallmark of hole transporting semiconductors for organic field-effect transistors.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis, Post‐Functionalization and Properties of Diphosphapentaarenes

Regulska

Hindenberg

Espineira-Gutierrez

et al. 2022

Chemistry A European J

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Linearly‐fused polyarenes are an important class of compounds with high relevance in materials science. While modifying the shape and size represents a common means to fine‐tune their properties, the precise placement of heteroatoms is a strategy that is receiving an increasing deal of attention to overcome the intrinsic limitations of all‐carbon structures. Thus, linearly‐fused diphosphaarenes recently emerged as a novel family of molecules with striking optoelectronic properties and outstanding stability. However, the properties of diphosphaarenes are far from being benchmarked. Herein, we report the synthesis, phosphorus post‐functionalization and properties of new diphosphapentaarene derivatives. We describe their synthetic limitations and unveil their potential for optoelectronic applications.

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Emerging applications of curved aromatic compounds

Cited by 18 publications

References 16 publications

[4]‐Cyclo‐2,7‐Carbazole as Host Material in High‐Efficiency Phosphorescent OLEDs: A New Perspective for Nanohoops in Organic Electronics

[4]‐Cyclo‐2,7‐Carbazole as Host Material in High‐Efficiency Phosphorescent OLEDs: A New Perspective for Nanohoops in Organic Electronics

Saddle-shaped aza-nanographene with multiple odd-membered rings

Synthesis, Post‐Functionalization and Properties of Diphosphapentaarenes

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