Guanheng Huang  Ziqi Deng  Junhong Pang  Jinghong Li  Shaofei Ni  Jian-An Li  Chen Zhou  Hailin Li  Bingjia Xu  Li Dang  Ming-De Li 《Advanced Optical Materials》2021,9(24):2170098

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Julien Fadel;Juliette Noyelle;Mathieu Maingon;Chadi Homedan;Xavier Dieu;Juan Manuel Chao de la Barca;Pascal Reynier;Coralie Mallebranche;Jean-François Brasme;Delphine Mirebeau-Prunier;Corentin Orvain;Floris Chabrun; 《Biomedical chromatography : BMC》2024,38(3):e5799

The management of life-threatening complications in patients with sickle cell disease (SCD) requires an accurate and reproducible quantification of haemoglobin A (HbA) and S (HbS) with a short turnaround time and 24-7 availability. We propose a novel method for quantifying HbA and HbS using the glycated haemoglobin (HbA1c) assay on a Tosoh HLC-723G8 (G8) analyser in variant mode. HbA and HbS results obtained using our method highly correlated with results obtained using a reference method (r > 0.99 for 124 samples of patients with SCD or sickle cell trait). Our method met laboratory requirements for linearity (coefficient of variation [CV] and bias <5%), between-run and within-run reproducibility (CV <10%) and carryover (<0.5%) over the range of HbS and HbA values expected in a therapeutic context. Using the G8 analyser in variant mode is viable for monitoring HbA and HbS concentrations in dire situations. This method is easy to use, quick (1.6 min per sample), and automatable and produces highly reproducible results without significant bias. Finally, it does not require modifications to the analytical pipeline recommended by the supplier, enabling a 24-7 availability without disrupting routine monitoring of HbA1c in the laboratory.  相似文献   

    

Muhammad Ahsan Iqbal  Xiaoliang Weng  Chenxu Kang  Nayab Arif  Kewen Wu  Wei Tang  Sichao Dai  Xueqian Fang  Houzhi Cai  Yu-Jia Zeng 《Laser u0026amp; Photonics Reviews》2024,18(2):2300612

Photoinduced charge-trapping is a promising strategy for boosting the photosensitivity of organic photodetectors at the expense of their response time. In addition, they have a low carrier extraction yield due to the formation of low-energy triplet excitons through the recombination of a photogenerated hole–electron pair. Materials with thermally activated delayed fluorescence (TADF) exhibit a long-lived (≈µs) excited spin-triplet nearly iso-energetically aligned with that of an excited spin-singlet, which results in suppressed exciton losses and is widely used in organic light-emitting diodes. The extraction and population of triplet state excitons in TADFs is a sought-after but underexplored aspect of photoinduced gating in photodetectors. A 1,2,3,5-tetrakis(carbazol-9-yl)4,6-Dicyanobenzene (4CzIPN) TADF blend with a high-mobility Poly[2,5-bis(3-tetradecylthiophen-2-yl)thieno[3,2-b]thiophene] (PBTTT-C₁₄) polymer via bulk type-II offset can increase free carrier extraction yield (fast response) and retain trapped electrons in TADF triplet states (high gain). The PBTTT-C₁₄/4CzIPN ultraviolet photodetector device maintains a trade-off between high photogain (≈10³) and fast response time (79 ms) at 300 nm while operating at a shallow dark current (≈pA). Furthermore, the device shows high external quantum efficiency (≈10⁴ %) and detectivity (≈10¹¹ Jones) for low light power (<pW). The innovative application of TADF material can lead to exciting new developments in organic-based high-performance photodetection.  相似文献   

    

Zhihai Yang;Guo-Xi Yang;Simin Jiang;Mengke Li;Weidong Qiu;Xiaomei Peng;Chenyang Shen;Yiyang Gan;Kunkun Liu;Deli Li;Shi-Jian Su; 《Advanced Optical Materials》2024,12(9):2301711

Polycyclic aromatic hydrocarbon (PAH) compounds are prospective materials for highly efficient narrowband organic light-emitting diodes. Specifically, boron-nitrogen doped PAHs exhibit multiple resonance (MR) effect toward thermally activated delayed fluorescence (TADF) and narrow full width at half-maximum (FWHM). Currently, the molecular design strategy for bathochromic-shifted narrowband MR-TADF emitters is a hotspot and challenging puzzle. Herein, a carbonyl is fused in the boron-nitrogen doped PAH for constructing a boron/nitrogen/carbonyl MR-TADF emitter. Benefiting from the carbonyl, the developed emitter exhibits enhanced intramolecular charge transfer and decreased reorganization energy, which displays bathochromic-shifted narrowband emission pertinently. As a consequence, the proof-of-concept compound TCZBAO achieves an emission peak at 522 nm and narrow FWHM of 39 nm, while the carbonyl-free TCZBAC exhibits an emission peak at 502 nm and FWHM of 46 nm. Maximum external quantum efficiencies of 36.1 % and 32.4 % are realized for the devices based on TCZBAO and TCZBAC, respectively, indicating the guiding significance of the proposed design strategy for developing bathochromic-shifted narrowband MR-TADF emitters.  相似文献   

    

Vilas Venunath Patil  Junseop Lim  Sung Min Cho  Jun Yeob Lee 《Advanced Optical Materials》2024,12(3):2300551

Emitters with high color purity and small full width at half maximum (FWHM) have attracted considerable attention in recent years. In this work, a novel narrow-emitting thermally activated delayed fluorescent (TADF) emitter, p-FLDID, is developed through C/N fusion. The p-FLDID is developed through core structure modification instead of peripheral substituent engineering. The design approach activates the TADF pathway and regulates emission in the deep-blue region. The multiresonance (MR) type p-FLDID emitter exhibits deep-blue emission with a peak wavelength of 449 nm, FWHM of 26 nm, Stokes shift of 13 nm, and a photoluminescence quantum yield of ≈97%. The rigid structure of p-FLDID not only restricts the molecular motion of the conjugated backbone structure but also results in a high horizontal emitting dipole orientation of 91%. The fabricated p-FLDID-based organic light-emitting diode exhibits deep blue emission with an external quantum efficiency of 22.0%, a FWHM of 29 nm, and a CIEy of 0.073. The present work demonstrates that high-efficiency TADF emission with a high-purity blue color can be realized via C/N fusion.  相似文献   

    

Jibiao Jin;Shumeng Wang;He Jiang;Lixiang Wang;Wai-Yeung Wong; 《Advanced Optical Materials》2024,12(11):2302354

Multi-resonance thermally activated delayed fluorescence (MR-TADF) molecules have attracted much attention in the academia owing to their unique photoelectrical properties. However, MR-TADF emitters usually show slow reverse intersystem crossing (RISC) rate, resulting in high efficiency roll-off of organic light-emitting diodes (OLEDs) and seriously limiting their further development. Here, a peripheral selenium (Se) modification is presented for MR-TADF molecules to promote the RISC process while keeping the narrowband emission for high-performance blue OLEDs. Compared to the parent molecules (NBN and tBuNBN), SeNBN and SetBuNBN exhibited narrower full-width at half maximum (FWHM) value of 23 nm and more obvious delayed fluorescence properties with a high efficiency of delayed fluorescence up to 86%, shorter delayed lifetime of 2.4 µs as well as a faster RISC rate of 3.34×105 s−1. Therefore, high-performance OLEDs based on these two Se modified MR-TADF emitters are achieved with a high maximum external quantum efficiency (EQE) up to 25.5% and extremely suppressed efficiency roll-offs of 3.9% at 100 cd m−2 and 24.4% at 1000 cd m−2. This work demonstrated that the introduction of peripheral Se atom can achieve high-performance organic semiconductors with both narrowband emission and fast RISC rate constant for high-performance organic optoelectronic devices.  相似文献   

    

Ruming Jiang;Zhangshan Liu;Tao Yang;Dezhi Yang;Dongge Ma;Ben Zhong Tang;Zujin Zhao; 《Advanced Optical Materials》2024,12(9):2302034

Robust organic luminescent materials radiating deep-red/near-infrared (DR/NIR) light are highly desired in organic light-emitting diodes (OLEDs). However, most reported DR/NIR materials show only moderate electroluminescence (EL) efficiencies accompanied by rock-ribbed efficiency roll-offs, which immensely limit their practical use in OLEDs. In this work, two tailor-made NIR luminescent materials with thermally activated delayed fluorescence (TADF) property are developed based on rigid and strong electron-accepting core of 2,7-bis(4-cyanophenyl)dibenzo[a,c]phenazine-11,12-dicarbonitrile and electron donors of triphenylamine or N,N-di([1,1′-biphenyl]-4-yl)phenylamine. They exhibit high photoluminescence quantum yields, fast reverse intersystem crossing processes and large horizontal dipole ratios. Their nondoped OLEDs show NIR lights with maximum external quantum efficiencies (ηext,maxS) of 0.59% at 856 nm and 1.14% at 850 nm. And their doped OLEDs radiate DR to NIR lights (646–737 nm) and attain superb ηext,maxs of up to 30.3% at 646 nm with small efficiency roll-offs. The state-of-the-art EL performances of both NIR TADF materials demonstrate their high potential as emitters in OLEDs and the insights gained in this work will enlighten the further development of efficient NIR luminescent materials.  相似文献   

    

Mengmeng Li  JinRong Wang 《Mathematical Methods in the Applied Sciences》2019,42(18):6607-6623

This paper firstly deals with finite time stability (FTS) of Riemann‐Liouville fractional delay differential equations via giving a series of properties of delayed matrix function of Mittag‐Leffler. We secondly study relative controllability of such type‐controlled system. With the help of the representation of solution, both Gram‐like type matrix and rank criterion are derived, which extend the corresponding results for linear systems.  相似文献   

    

Xiu-Hui Ren  Gang-Yuan Li  Hua Du  Jian-Ping Ma  Yan Geng  Yu-bin Dong 《Acta Crystallographica. Section C, Structural Chemistry》2019,75(6):758-767

4,4′‐{9,9′‐Spirobi[10H‐acridine]‐10,10′‐diyl}dibenzoic acid ( L , C₂₉H₂₆N₂O₄) was designed and synthesized as a new donor–acceptor motif molecule. Due to the large dihedral angle between the planes of the carboxyphenyl group and the spiroacridine moiety, L possess thermally activated delayed fluorescence (TADF). By applying L as a ligand and using Cd as a metal connector, we synthesized the coordination polymer catena‐poly[hemi‐μ‐aqua‐aqua(μ₃‐4,4′‐{9,9′‐spirobi[10H‐acridine]‐10,10′‐diyl}dibenzoato)cadmium(II)], [Cd(C₂₉H₂₄N₂O₄)(H₂O)_1.5]_n, ( I ). X‐ray crystallographic analysis revealed that this coordination polymer exhibits one‐dimensional chains constructed from molecular twist‐ring moieties, with Cd₂O₁₁ clusters as the connection nodes. The stacking pattern of the two‐dimensional network was formed by C—H…π interactions in the solid state. Similar to L , ( I ) presents a sky‐blue TADF emission, together with a photoluminescence quantum yield (PLQY) of 40%. It is worth noting that the photocatalytic activity toward the generation of singlet oxygen of this coordination polymer is confirmed.  相似文献   

    

Wenjie Li  Lihong Huang  Jinchen Ji 《Mathematical Methods in the Applied Sciences》2019,42(13):4498-4515

This paper investigates the periodic solution of a delayed Beddington‐DeAngelis (BD) type predator‐prey model with discontinuous control strategy. Firstly, the regularity and visibility analysis of the delayed predator‐prey model is carried out by using the principle of differential inclusion. Secondly, the positiveness and boundeness of the solution is discussed by employing the comparison theorem. Based on the boundary conditions of the model and the Mawhin‐like coincidence theorem, it is shown that the solution of the delayed BD system is asymptotically stable in finite time. Furthermore, it is found that there exists at least one periodic solution of the nonautonomous delayed predator‐prey model by using the principle of topological degree and set value mapping. Specially, when the nonautonomous delayed BD system degenerates into an autonomous system, some criteria are obtained to guarantee the convergence behavior of the harvesting solutions for the corresponding autonomous delayed BD system. Finally, numerical examples are given to demonstrate the applicability and effectiveness of main results. It is worthy to point out that the discontinuous control strategy is superior to the continuous harvesting policies adopted in existing literature.  相似文献