Chemical Communications, Год журнала: 2024, Номер unknown
Опубликована: Янв. 1, 2024
Two orange-red emission circularly polarized thermally activated delayed fluorescence emitters (R)-ad-PXZ/(S)-ad-PXZ were synthesized. The solution processable device exhibits the maximum external quantum efficiency of 9.0% and g EL value 10 −3 .
Язык: Английский
Advanced Functional Materials, Год журнала: 2025, Номер unknown
Опубликована: Янв. 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.
Язык: Английский
Процитировано
1
Angewandte Chemie International Edition, Год журнала: 2024, Номер unknown
Опубликована: Окт. 10, 2024
Abstract Stimuli‐responsive circularly polarized luminescence (CPL) materials have been attaching wide attention in the field of optical information storage and encryption, while still facing challenge realization high dissymmetry factors ( g lum ). This work presents a pair stimuli‐responsive chiral co‐assemblies P7R3 P7S3 by combining polymer PFIQ containing iso ‐quinoline units with inducers. The obtained can reversibly undergo significant modification CPL behavior under trifluoroacetic acid (TFA) fumigation annealing treatment, |g | values exhibiting reversible shift between 0.2 0.3. Moreover, before TFA fumigating effectively induce achiral emitters to generate intense full‐color signals through energy transfer (CPL‐ET), corresponding larger than 0.2. encryption decryption as well multi‐level logic gates application are achieved leveraging activity co‐assembly. provides new perspective for construction luminescent large activation emitters.
Язык: Английский
Процитировано
4
Small, Год журнала: 2025, Номер unknown
Опубликована: Янв. 31, 2025
Circularly polarized light-emitting devices have found extensive application prospects in 3D displays and optoelectronic information. Among them, circularly organic diodes (CP-OLED), as a rising star of devices, achieved good research results. However, the preparation CP-OLED with high electroluminescence asymmetry factor external quantum efficiency is hot difficult topic. At present, approaches for achieving via are: 1) Using chiral materials luminescent materials, 2) Utilizing functional materials. This review summarizes recent methodologies used manufacturing CP-OLED. It focuses on construction strategies applications (chiral host hole transport electron materials) While challenges such complex design material interactions persist, advancements device architecture propel forward. These developments promise to elevate focal point research, facilitating high-performance, luminescence (CPL)-capable practical applications.
Язык: Английский
Процитировано
0
Nature Communications, Год журнала: 2025, Номер 16(1)
Опубликована: Фев. 15, 2025
Abstract Organic light-emitting diodes (OLEDs) supporting the direct emission of circularly polarized (CP) light are essential for numerous technologies. The realization CP-OLEDs with large dissymmetry ( g EL ) factors and high external quantum efficiencies (EQEs) has been accepted as a considerable challenge. Here we demonstrate efficient based on assembly chiral plasmonic nanoparticles (NPs) supramolecular aggregates. NPs serve scaffold optical nanoantenna to modulate absorption chromophores. We employ different construct various dominated by excitons or plasmons. CP-OLED showing EQE 2.5% factor 0.31 is achieved, result multiscale chirality transfer, enhancement, suppression overshoot effect. proposed schemes compatible current manufacturing technology OLEDs. This work demonstrates that can be promising candidates in photoelectric devices.
Язык: Английский
Процитировано
0
Macromolecular Rapid Communications, Год журнала: 2025, Номер unknown
Опубликована: Март 5, 2025
We present a conjugated copolymer designed as near-infrared (NIR) emitter for organic light-emitting diodes (NIR-OLEDs). The low bandgap donor-acceptor copolymer, comprising terthiophene derivative (3T) and benzothiadiazole (BT), is end-capped with bulky triphenyalmine (TPA) groups (3TBT-TPA). Compared the parent homologue capped simple phenyl rings, 3TBT-TPA shows enhanced solubility in solvents improved photoluminescence quantum yield thanks to reduced close packing of chains. 3TBT-TPA, used both neat emitting layer blended fluorene-benzothiadiazole (F8BT) host NIR-OLEDs, external efficiency up 0.58%. Additionally, chiral induction achieved F8BT:3TBT-TPA blend film using commercial dopant, yielding circularly polarized (CP), (PL) electroluminescence (EL) range 500-800 nm maximum dissymmetry factor 10-2. This first example CP-NIR EL from polymer. work highlights potential TPA-capped strategy copolymers efficient NIR-OLEDs opens new perspectives use polymers NIR photonic applications.
Язык: Английский
Процитировано
0
Nature Communications, Год журнала: 2025, Номер 16(1)
Опубликована: Март 26, 2025
Circularly polarized luminescence (CPL) in solution offers several advantages. However, it remains challenging for organic molecules to achieve circularly with high dissymmetry factor (glum) solution. Herein, a general strategy is developed by placing chiral nematic liquid crystals (N*-LCs) behind the of achiral molecules. The selective reflection-transmission mechanism solution-N*-LC composite system enables generation full-color and white light |glum| even reaching 2.0. This demonstrates versatility, being applicable both aqueous solutions, effectively achieving multiple glum values. Additionally, CPL switching logic gate applications are successfully realized leveraging N*-LCs reversible acid-base responsiveness systems. work provides robust values solutions. advantages, however, factors Here, authors report using
Язык: Английский
Процитировано
0
ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown
Опубликована: Апрель 7, 2025
Circularly polarized organic light-emitting diodes (CP-OLEDs) and CP photodetectors have received enormous attention owing to their promising potential in light-related technologies. The simultaneous construction of efficient CP-OLEDs using the multifunctionality same chiral material remains be explored. Herein, achiral conjugated polymer poly(9,9-dioctylfluorene) (PFO) is used for coassembly with helical polyacetylenes. resulting emitters can achieve high-performance circularly electroluminescence (CPEL) a large dissymmetry factor (gEL) 0.11 high brightness 9035 cd m-2. By introducing flexible substrate into device, are realized. Additionally, such serve as photoactive layer photodetector detect light, maximum photocurrent (gph) order 10-1. This work provides route realize factors polyfluorene polymer, facilitating comprehensive versatile development.
Язык: Английский
Процитировано
0
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
0
Journal of Molecular Structure, Год журнала: 2024, Номер 1320, С. 139726 - 139726
Опубликована: Авг. 22, 2024
Язык: Английский
Процитировано
1
Angewandte Chemie, Год журнала: 2024, Номер unknown
Опубликована: Окт. 10, 2024
Abstract Stimuli‐responsive circularly polarized luminescence (CPL) materials have been attaching wide attention in the field of optical information storage and encryption, while still facing challenge realization high dissymmetry factors ( g lum ). This work presents a pair stimuli‐responsive chiral co‐assemblies P7R3 P7S3 by combining polymer PFIQ containing iso ‐quinoline units with inducers. The obtained can reversibly undergo significant modification CPL behavior under trifluoroacetic acid (TFA) fumigation annealing treatment, |g | values exhibiting reversible shift between 0.2 0.3. Moreover, before TFA fumigating effectively induce achiral emitters to generate intense full‐color signals through energy transfer (CPL‐ET), corresponding larger than 0.2. encryption decryption as well multi‐level logic gates application are achieved leveraging activity co‐assembly. provides new perspective for construction luminescent large activation emitters.
Язык: Английский
Процитировано
0