Theoretical Chemistry Accounts, Journal Year: 2025, Volume and Issue: 144(4)
Published: April 1, 2025
Language: Английский
Advanced Materials, Journal Year: 2024, Volume and Issue: 36(38)
Published: July 25, 2024
A promising kind of ternary chiral co-assemblies with high PLQY, large dissymmetry factor (g
Language: Английский
Citations
14
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(36)
Published: June 20, 2024
The strategy of integrating conformational isomerization donors and chiral acceptors in a single molecule was proposed to construct white circularly polarized luminescence (WCPL) materials this work. Consequently, pair dual-emission enantiomers, namely (R/S)-DO-PTZ, were designed synthesized, which displayed emission with blue yellow bands solution solid films Commission Internationale de l'Eclairage (CIE) coordinates (0.30, 0.33) (0.33, 0.35), respectively. Meanwhile, (R/S)-DO-PTZ exhibited high PLQY up 67 % doped clear mirror-image WCPL signals |g
Language: Английский
Citations
12
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 28, 2025
Abstract In this study, the development of first fully‐organic circularly polarized near‐infrared organic light–emitting diode (CP‐NIR‐OLED) is presented. The devices are made by using a co‐assembled active layer consisting commercially available NIR‐emitting indacenodithienothiophene‐based molecule (ITIC) and chiral inducer. Here, ITIC, which traditionally utilized as non‐fullerene acceptor in photovoltaics for its superior characteristics, demonstrated to act an effective NIR emitter solution‐processed OLEDs. By incorporating additive into layer, emission successfully polarized, achieving CP‐NIR‐OLEDs with dissymmetry values up 0.074 maximum radiance 1.65 Wsr −1 m −2 . Additionally, study shows that manipulating position radiative exciton recombination zone within circular polarization sign can be switched, while maintaining even enhancing device performance. This also exhibit remarkable operational stability, indicating their potential short‐term applications. work provides significant step forward CP‐OLEDs opens new avenues use advanced optoelectronic devices.
Language: Английский
Citations
1
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown
Published: July 16, 2024
Circularly polarized electroluminescence (CPEL) is highly promising in realm of 3D display and optical data storage. However, designing a groundbreaking chiral material with high comprehensive CPEL performance remains formidable challenge. In this work, pair polymers self-assembled behavior designed by integrating BN-moiety into polyfluorene backbone, named R-PBN S-PBN, respectively. The show narrowband emission centered at 490 nm full-width half maximum (FWHM) 29 photoluminescence quantum yield (PLQY) 79 %. After thermal annealing treatment, the undergo self-assembly, exhibiting amplified circularly luminescence (CPL) asymmetry factor (|g
Language: Английский
Citations
8
Materials Horizons, Journal Year: 2024, Volume and Issue: 11(19), P. 4722 - 4729
Published: Jan. 1, 2024
Circularly polarized organic light-emitting diodes (CP-OLEDs) hold great potential for naked-eye 3D displays, necessitating efficient chiral luminescent materials with an optimal CP luminescence (CPL) dissymmetry factor (
Language: Английский
Citations
7
Chemical Science, Journal Year: 2024, Volume and Issue: 15(37), P. 15170 - 15177
Published: Jan. 1, 2024
A pair of CP-MR-TADF enantiomers with high-order B,N-embedded hetero[8]helicene, ( P / M )-BN-TP-ICz, was constructed. CP-OLEDs exhibit narrow green emission peaking at 540 nm maximum EQEs 32.0% and g EL s approximately 7.70 × 10 −4 .
Language: Английский
Citations
6
Chemical Science, Journal Year: 2024, Volume and Issue: 15(41), P. 16917 - 16927
Published: Jan. 1, 2024
Helically chiral MR-TADF compounds tBuPh-BN and DPA-tBuPh-BN show narrowband circularly polarized luminescence that translates into high-performance hyperfluorescent organic light-emitting diodes.
Language: Английский
Citations
6
Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(43), P. 29782 - 29791
Published: Oct. 22, 2024
In this manuscript we present a strategy to achieve ultranarrowband circularly polarized luminescence (CPL) from multiple 1,4-azaborine-embedded helical nanographenes. The impact of number and position boron nitrogen atoms in the rigid core molecule on optical properties─including absorption emission maxima, photoluminescence quantum yield, Stokes shift, excited singlet–triplet energy gap full width at half-maximum (fwhm) for CPL fluorescence─was investigated. molecules reported here exhibits fluorescence (fwhm 16–17.5 nm toluene) 18–19 toluene). To best our knowledge, is among narrowest any organic date. Quantum chemical calculations, including computed spectra involving vibronic contributions, provide valuable insights future molecular design aimed achieving narrowband CPL.
Language: Английский
Citations
6
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(48)
Published: July 25, 2024
Abstract Developing efficient blue/deep‐blue circularly polarized organic light‐emitting diodes (CP‐OLEDs) with small efficiency roll‐off remains a great challenge for wide color gamut and high contrast 3D displays. Here, two pairs of chiral stable enantiomers, ( R / S )‐PPI‐OBN‐CN )‐PyI‐OBN‐CN, composed imidazole derivatives phenanthroimidazole (PPI) pyrenoimidazole (PyI) donors, group )‐octahydro‐binaphthol (OBN‐CN) acceptor are designed. These new molecular architectures exhibit excellent thermal electrochemical stabilities, hybrid local charge transfer (HLCT) excited state, clear CPL characteristics dissymmetry factors (|g PL |) 1.57 × 10 −3 /2.49 in the neat films. Moreover, CP‐OLEDs based on )‐PyI‐OBN‐CN deep‐blue/pure‐blue emission CIE coordinates (0.15, 0.08) 0.14), maximum external quantum efficiencies (EQEs) 7.25% 8.11% very roll‐offs 17.6% 1.8% at luminescence 1000 cd m −2 , respectively. Even when brightness is increased to 10000 )‐PyI‐OBN‐CN‐based device could still maintain as 6.68%. Obvious electroluminescence (CPEL) activities EL g ) +1.54 /−1.63 +1.95 /−1.72 also recorded. first highly “hot exciton” enantiomers.
Language: Английский
Citations
4
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Aug. 29, 2024
Abstract Circularly polarized multi‐resonance thermally activated delayed fluorescence (CP‐MR‐TADF) materials, capable of achieving circularly luminescence (CPL), play a crucial role in the field 3D display. In this study, two pairs axial chiral MR‐TADF enantiomers, ( R/S )‐ S‐AX‐BN and SO 2 ‐AX‐BN , are synthesized by fusing biphenyl skeletons containing sulfur/sulfone with classic B/N‐embedded polycyclic aromatic hydrocarbons. These compounds exhibit good photophysical properties intense CPL. display green photoluminescence, peaks at 489 495 nm, full‐width half‐maximum (FWHM) values 21 20 nm toluene, dissymmetry factors (| g PL |) 3.5 × 10 −3 2.3 doped films, respectively. Additionally, organic light‐emitting diodes (CP‐OLEDs) fabricated from narrow electroluminescence (EL) spectra FWHMs 22 nm. CP‐OLEDs achieve high maximum external quantum efficiencies 33.5% 31.5%, relatively low efficiency roll‐offs. Furthermore, they | EL 3.3 2.2 respectively, representing highest among analogs. This work introduces novel approach for designing CP‐MR‐TADF molecules provides reference fabricating narrowband
Language: Английский
Citations
4