Themed collection Editor’s Choice: Spiro compounds for electronics

17 items
Editorial

Journal of Materials Chemistry C Editor's choice web collection: ‘Spiro compounds for electronics’

Cyril Poriel introduces the Journal of Materials Chemistry C Editor's choice web collection on advances in ‘Spiro compounds for electronics’.

Graphical abstract: Journal of Materials Chemistry C Editor's choice web collection: ‘Spiro compounds for electronics’
Open Access Paper

Highly efficient, ultralow turn-on voltage red and white organic light-emitting devices based on a novel exciplex host

We have prepared high-performance white OLEDs based on exciplex systems and blue ultra-thin FIrPic layers, exhibiting a low turn-on voltage of 2.2 V with a maximum power efficiency of 34.1 lm W−1, and the CIE coordinate (0.33,0.33) at 1000 cd m−2.

Graphical abstract: Highly efficient, ultralow turn-on voltage red and white organic light-emitting devices based on a novel exciplex host
Paper

Cyanophenyl spiro[acridine-9,9′-fluorene]s as simple structured hybridized local and charge-transfer-based ultra-deep blue emitters for highly efficient non-doped electroluminescent devices (CIEy ≤ 0.05)

Cyanophenyl substituted spiro[acridine-9,9′-fluorene]s featured with HLCT excited states yielded highly efficient non-doped OLEDs with emissions in high-definition television standard blue color, CIEy ≤ 0.05, and CEmax/EQEmax of 6.54 cd A−1/4.63%.

Graphical abstract: Cyanophenyl spiro[acridine-9,9′-fluorene]s as simple structured hybridized local and charge-transfer-based ultra-deep blue emitters for highly efficient non-doped electroluminescent devices (CIEy ≤ 0.05)
Paper

Novel spiro[fluorene-9,9′-xanthene]-based hole transport layers for red and green PHOLED devices with high efficiency and low efficiency roll-off

Spiro[fluorene-9,9′-xanthene]-based HTMs for high efficiency red and green PHOLEDs with low efficiency roll-off.

Graphical abstract: Novel spiro[fluorene-9,9′-xanthene]-based hole transport layers for red and green PHOLED devices with high efficiency and low efficiency roll-off
Paper

Synthesis of spirodithienogermole with triphenylamine units as a dopant-free hole-transporting material for perovskite solar cells

Spiro-condensed dithienogermoles with electron-donating aromatic substituents were prepared, one of which was examined as the hole-transporting material of perovskite solar cell, providing the maximal photo-current conversion efficiency of 14.67%.

Graphical abstract: Synthesis of spirodithienogermole with triphenylamine units as a dopant-free hole-transporting material for perovskite solar cells
Paper

Multiple photoluminescence of spiro[acridine-fluorene]-based o-carboranyl compounds with potential as a visual sensory material

Two spiro[acridine-9,9′-fluorene]-based closo-o-carboranyl compounds were prepared and they demonstrated the application potential of π-aromatic conjugated o-carboranyl compounds as visual sensory materials.

Graphical abstract: Multiple photoluminescence of spiro[acridine-fluorene]-based o-carboranyl compounds with potential as a visual sensory material
Paper

Universal host materials for red, green and blue high-efficiency single-layer phosphorescent organic light-emitting diodes

As simplifying the device structure is a key step for the future of organic electronic, we report herein high efficiency universal host materials for red, green and blue Single-Layer Phosphorescent OLEDs.

Graphical abstract: Universal host materials for red, green and blue high-efficiency single-layer phosphorescent organic light-emitting diodes
Paper

Spiro-type host materials with rigidified skeletons for RGB phosphorescent OLEDs

A universal host material for red, green and blue phosphors raises challenges for the fabrication of efficient phosphorescent organic light-emitting diodes (PHOLEDs).

Graphical abstract: Spiro-type host materials with rigidified skeletons for RGB phosphorescent OLEDs
Paper

Non-fullerene small molecule acceptors with three-dimensional thiophene/selenophene-annulated perylene diimides for efficient organic solar cells

Three-dimensional non-fullerene acceptors with a spiro core linked with S/Se fused perylene diimides possess appropriate energy levels, twisted molecular configuration and high carrier mobility, leading to a PCE of 6.95% for organic solar cells.

Graphical abstract: Non-fullerene small molecule acceptors with three-dimensional thiophene/selenophene-annulated perylene diimides for efficient organic solar cells
Paper

A cost-device efficiency balanced spiro based hole transport material for perovskite solar cells

The new hole-transport material (HTM), spiro-omethoxyimidazole (spiro-OMeIm) and its application in perovskite solar cells (PSCs) is presented as a less costly alternative to the benchmark spiro-MeOTAD, working towards the future development of low-cost PSCs.

Graphical abstract: A cost-device efficiency balanced spiro based hole transport material for perovskite solar cells
Paper

High-efficiency pure blue thermally activated delayed fluorescence emitters with a preferentially horizontal emitting dipole orientation via a spiro-linked double D–A molecular architecture

A spiro-linked double D–A molecular architecture has been introduced to construct blue thermally activated delayed fluorescence (TADF) emitters with a preferentially horizontal emitting dipole orientation.

Graphical abstract: High-efficiency pure blue thermally activated delayed fluorescence emitters with a preferentially horizontal emitting dipole orientation via a spiro-linked double D–A molecular architecture
Paper

Effect of structural engineering of π-spacers on anti-aggregation of D–A–π–A dyes

SPDF and EIMW act as efficient anti-aggregation π-spacers due to the rigid ‘T’ configuration of the former and the large steric hindrance of the latter.

Graphical abstract: Effect of structural engineering of π-spacers on anti-aggregation of D–A–π–A dyes
Paper

Thermally activated delayed fluorescence emitters with low concentration sensitivity for highly efficient organic light emitting devices

By introducing a fluorene group, the molecular rigidity and intermolecular steric hindrance of SPFS-PXZ are greatly improved. As a result, SPFS-PXZ successfully realizes high external quantum efficiencies with low concentration sensitivity in OLEDs.

Graphical abstract: Thermally activated delayed fluorescence emitters with low concentration sensitivity for highly efficient organic light emitting devices
Paper

High-performance organic light-emitting diodes with low-efficiency roll-off using bulky tetradentate [Pt(O^N^C^N)] emitters

Double-host OLEDs with three bulky tetradentate [Pt(O^N^C^N)] emitters achieve a high EQEmax of >20%, a PEmax of >100 lm W−1, and low efficiency roll-off within 10 000 cd m−2.

Graphical abstract: High-performance organic light-emitting diodes with low-efficiency roll-off using bulky tetradentate [Pt(O^N^C^N)] emitters
Paper

A spiro-silafluorene–phenazasiline donor-based efficient blue thermally activated delayed fluorescence emitter and its host-dependent device characteristics

A blue TADF emitter based on a spiro-connected silafluorene–phenazasiline donor with an EQE of 20.6% and CIE coordinates of (0.150, 0.184).

Graphical abstract: A spiro-silafluorene–phenazasiline donor-based efficient blue thermally activated delayed fluorescence emitter and its host-dependent device characteristics
Paper

Two spirobifluorene-based fluorescent probes with aggregation-induced emission properties: synthesis and application in the detection of Zn2+ and cell imaging

The synthesis and application of two spirobifluorene-based probes with AIEE properties have been reported for the first time.

Graphical abstract: Two spirobifluorene-based fluorescent probes with aggregation-induced emission properties: synthesis and application in the detection of Zn2+ and cell imaging
Paper

Diazaspirocycles: novel platforms for efficient phosphorescent organic light-emitting diodes

Diazaspirocycle molecular platforms were used to construct hosts for efficient phosphorescent organic light-emitting diodes.

Graphical abstract: Diazaspirocycles: novel platforms for efficient phosphorescent organic light-emitting diodes
17 items

About this collection

Journal of Materials Chemistry C Advisory Board member Prof. Cyril Poriel (Université de Rennes and CNRS, France) has selected a collection of outstanding recent papers on spiro compounds for electronics, across JMC C and Materials Advances.

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