Science China Chemistry最新文献

{"title":"Symmetry-induced cage isomerism in MOFs enables benchmark propylene storage and efficient propylene/ethylene separation","authors":"Yan-Ying Liu,&nbsp;Fei Yuan,&nbsp;Zhang-Lei Zhong,&nbsp;Chen-Chen Xing,&nbsp;Jia-Wen Wang,&nbsp;Wen-Yu Yuan,&nbsp;Ying Wang,&nbsp;Quan-Guo Zhai","doi":"10.1007/s11426-025-3279-1","DOIUrl":"10.1007/s11426-025-3279-1","url":null,"abstract":"<div><p>The maturation of industrial methanol-to-olefins (MTO) technology intensifies the demand for highly-efficient separation of ethylene/propylene (C₂H₄/C₃H₆) mixture products. Addressing this challenge, a ligand-symmetry-guide molecular cage isomerism strategy is proposed and verified herein. The symmetry transition from C₁ to C_2<i>v</i> triggered by C/N exchange in organic linkers generated structure-related SNNU-5/5A materials containing two octahedral cage isomers ({[Fe₃O]₆L₁₂}, defined as o-cage-α/β. Notably, the “isomer” in this paper specifically refer to the geometric spatial isomerism of metal-organic cages) and three tetradecahedral cage isomers ({[Fe₃O]₁₂L₁₂}, defined as t-cage-α/β/γ). The structural modularity of two types of cage isomers with confined windows (≈6 Å) coupled with capacious cavities (&gt;12 Å) synergistically surmounts the persistent capacity-selectivity trade-off for C₂H₄/C₃H₆ separation. Specially, SNNU-5A with three different cages exhibit ultra-high C₃H₆ uptake capacities of 270.1 cm³ g⁻¹ under ambient conditions along with separation productivity of 114 L kg⁻¹ for C₂H₄ (purity &gt; 99.9%) and 107 L kg⁻¹ for C₃H₆ (purity &gt; 99%), ranking second among all adsorbents for MTO products separation. This study offers a new perspective on cage engineering within MOFs and provides valuable guidance for designing practical adsorbents that overcome the trade-off barrier between adsorption capacity and separation efficiency.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":772,"journal":{"name":"Science China Chemistry","volume":"69 7","pages":"3493 - 3500"},"PeriodicalIF":9.8,"publicationDate":"2026-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148553128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Insights into the composition-structure-function relationship for designing perovskite oxides for cesium remediation","authors":"Zhi-Hua Chen,&nbsp;Hai-Yan Sun,&nbsp;Zi-Yuan Chen,&nbsp;Yu-Wei Ren,&nbsp;Xiao-Ya Zhang,&nbsp;Mei-Ling Feng,&nbsp;Xiao-Ying Huang","doi":"10.1007/s11426-025-3296-2","DOIUrl":"10.1007/s11426-025-3296-2","url":null,"abstract":"<div><p>Perovskite oxides are promising for Cs⁺ separation owing to their rich composition, structural tunability, and chemical stability. However, the difficulty lies in clarifying the composition-structure-function relationship to direct the materials design. Herein, Dion-Jacobson layered perovskite oxides (D-J-LPOs) ACa_2−<i>x</i>La_<i>x</i>Nb_3−<i>x</i>Ti_<i>x</i>O₁₀·<i>n</i>H₂O (<i>A</i> = K⁺, Rb⁺, Cs⁺, H⁺; <i>x</i> = 0–3) are investigated to elucidate the influence of <i>A</i>-site (K⁺, Rb⁺, Cs⁺, H⁺) and <i>B</i>-site (Nb⁵⁺/Ti⁴⁺) cations on Cs⁺ adsorption. Only HCa_2−<i>x</i>La_<i>x</i>Nb_3−<i>x</i>Ti_<i>x</i>O₁₀·<i>n</i>H₂O with the suitable interlayer distances and the presence of hydrated protons/interlayer water molecules can effectively capture Cs⁺ through ion exchange. Even under competing ions or in actual environmental water, HCa_2−<i>x</i>La_<i>x</i>Nb_3−<i>x</i>Ti_<i>x</i>O₁₀·<i>n</i>H₂O can selectively capture Cs⁺. Importantly, as the <i>B</i>-site Nb⁵⁺/Ti⁴⁺ ratio increases, the Cs⁺ adsorption performances are markedly enhanced. Due to the higher electronegativity of Nb⁵⁺, with the increase of the Nb⁵⁺/Ti⁴⁺ ratio, the interlayer protons are gradually attached from [TiO₆] to [NbO₆], leading to the increase of Bronsted acidity of the material and charge density of the anionic layer, facilitating the Cs⁺ ion exchange. This study clarifies that the <i>A</i>-site cation in D-J-LPOs governs the occurrence of Cs⁺ ion exchange, while the <i>B</i>-site cation modulates the efficiency. This work pioneers insights into the composition-structure-function relationship for designing advanced materials for radionuclide remediation.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":772,"journal":{"name":"Science China Chemistry","volume":"69 8","pages":"4424 - 4432"},"PeriodicalIF":9.8,"publicationDate":"2026-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enantioselective assembly of chiral acyclic sulfonimidamides via carbene-catalyzed desymmetric N-acylation","authors":"Yani Li,&nbsp;Tianyi Wang,&nbsp;Jian Wang","doi":"10.1007/s11426-025-3287-7","DOIUrl":"10.1007/s11426-025-3287-7","url":null,"abstract":"<div><p>Sulfonimidamides play an increasingly significant role in medicinal chemistry. However, the scarcity of efficient asymmetric methods has constrained their widespread applications. Herein, we report a simplified carbene-catalyzed <i>N</i>-acylation approach for the rapid synthesis of chiral unprotected acyclic SIAs. This transformation proceeds via a critical tautomerization process, affording a wide range of SIAs in good yield and with high enantioselectivities.</p><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":772,"journal":{"name":"Science China Chemistry","volume":"69 6","pages":"3014 - 3018"},"PeriodicalIF":9.7,"publicationDate":"2026-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148060959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Controlled NO release via GO-doped alginate hydrogels for electronic antibacterial devices","authors":"Zehan Liu,&nbsp;Peixuan Wu,&nbsp;Eunji Kim,&nbsp;Xingqing Xiao,&nbsp;Goeun Kim,&nbsp;Rohan Dassanayake,&nbsp;Sumin Kim,&nbsp;Tawfik Khattab,&nbsp;Guanghua Xia,&nbsp;Yuanyuan Liu,&nbsp;Mingle Li,&nbsp;Yang Zhou,&nbsp;Jong Seung Kim","doi":"10.1007/s11426-025-3273-0","DOIUrl":"10.1007/s11426-025-3273-0","url":null,"abstract":"<div><p>The controlled release of nitric oxide gas remains a formidable challenge in the biomedical field. In our study, graphene oxide (GO) was utilized to develop controlled NO-releasing antimicrobial hydrogels by incorporating S-nitroso-N-acetyl-D-penicillamine (SNAP) as the NO donor. Initially, both physically crosslinked polyvinyl alcohol (PVA)-sodium alginate (SA) hydrogels formed through hydrogen bonding and chemically crosslinked PVA-SA-hydroxyapatite (HAP) hydrogels with boric acid were fabricated by incorporating varying amounts of GO along with SNAP loading. The incorporation of 1% GO increased NO release time by over 160%, reducing the initial burst release in both physically and chemically crosslinked hydrogels. Theoretical calculations showed that GO acts as a trapping agent for SNAP molecules in the hydrogel matrix and enhances the cleavage energy of the S–N bond by 1.074 × 10⁻³ Hartree. Furthermore, the addition of 1% GO improved the mechanical properties of the hydrogels, resulting in excellent tensile strength exceeding 450 kPa and elongation greater than 217%. Both hydrogels exhibited potent antibacterial and antibiofilm activity against <i>Staphylococcus aureus</i> (<i>S. aureus</i>) and <i>Escherichia coli</i> (<i>E. coli</i>), with effectiveness exceeding 99% and 96%, respectively. Moreover, these conductive hydrogels offer real-time monitoring of finger bending and voice, with rapid response and high stability.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":772,"journal":{"name":"Science China Chemistry","volume":"69 8","pages":"4570 - 4580"},"PeriodicalIF":9.8,"publicationDate":"2026-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Circularly polarized luminescence: materials, photophysics, devices, and applications","authors":"Zhong-Qiu Li,&nbsp;Deng-Chao Zhang,&nbsp;Han-Xiao Wang,&nbsp;Meng Li,&nbsp;Wei Jiang,&nbsp;Yue Zhang,&nbsp;Zizhao Huang,&nbsp;Hai Zhong,&nbsp;Nan-Xi Wei,&nbsp;Xin Dong,&nbsp;Wenkai Zhao,&nbsp;Honghan Ji,&nbsp;Li Yuan,&nbsp;Zhonghao Zhou,&nbsp;Jingyu Zhang,&nbsp;Mingjiang Zhang,&nbsp;Si Li,&nbsp;Lina Li,&nbsp;Zhi-Gang Gu,&nbsp;Zijie Qiu,&nbsp;Biao Zhao,&nbsp;Zhaohui Wang,&nbsp;Xiang Ma,&nbsp;Yixiang Cheng,&nbsp;Jianping Deng,&nbsp;Jian Zhang,&nbsp;Shuang-Quan Zang,&nbsp;Guankui Long,&nbsp;Pengfei Duan,&nbsp;Chuan-Feng Chen,&nbsp;You-Xuan Zheng,&nbsp;Yong Sheng Zhao,&nbsp;Junhua Luo,&nbsp;Runfeng Chen,&nbsp;Taotao Zhuang,&nbsp;Yu-Wu Zhong,&nbsp;Ben Zhong Tang,&nbsp;Minghua Liu","doi":"10.1007/s11426-026-3371-4","DOIUrl":"10.1007/s11426-026-3371-4","url":null,"abstract":"<div><p>The research on circularly polarized luminescence (CPL) has received significant attention due to its promising applications in advanced optical technologies. This review summarizes the latest advancements in the development of CPL-active materials across organic, hybrid, and inorganic systems. Particular emphasis is placed on material design strategies that simultaneously achieve high luminescence efficiency and large dissymmetry factors (<i>g</i>_lum) through chiral induction, molecular engineering, and supramolecular organization. The review further explores the cutting-edge applications of these CPL materials in optoelectronic devices, as well as emerging uses in information encryption, anti-counterfeiting, and chiral sensing. Finally, the review highlights current challenges and future prospects in the field, addressing fundamental limitations in material performance, device integration, and scalability. This review aims to provide valuable insights and inspire future research that will advance CPL technologies toward practical implementation in photonics and optoelectronics.\u0000</p><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":772,"journal":{"name":"Science China Chemistry","volume":"69 5","pages":"2127 - 2192"},"PeriodicalIF":9.7,"publicationDate":"2026-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147828477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mesoporous assembly of homochiral aluminum molecular rings for room-temperature asymmetric cyanosilylation","authors":"Yi-Bo Chen,&nbsp;Jian Hao,&nbsp;Jia-Jia Liu,&nbsp;Han Xiao,&nbsp;Qi Lv,&nbsp;Min-Yi Zhang,&nbsp;Shangda Li,&nbsp;Lisheng Chi,&nbsp;Yu-Wu Zhong,&nbsp;Laurent Ruhlmann,&nbsp;Jian Zhang,&nbsp;Chunsen Li,&nbsp;Wei-Hui Fang","doi":"10.1007/s11426-025-3284-y","DOIUrl":"10.1007/s11426-025-3284-y","url":null,"abstract":"<div><p>Chiral metal-organic macrocycles and cages, as enzyme-mimetic platforms for asymmetric catalysis, face the challenge of integration with low-cost metals. We report the first homochiral Al^lII macrocycle-based supramolecular cages, cAlOC-185-<i>S/R</i>—[(c-Al₈)₆], synthesized via a dual-ligand strategy combining chiral phosphates and N-donor co-ligands with HNO₃. A distinctive trait is water coordination at the macrocycle’s waist, exposing catalytic sites. Additionally, switching N-donor coligands from NA to 6-NH₂-NA modulates supramolecular assembly, enlarging the external channel diameter from 2.3 to 3.3 nm. Compared with traditional metal-organic cages, these macrocycle-based systems offer three key advantages. (1) Cost-effective: accessible ligands, low-cost Al^III, one-pot synthesis. (2) Improved mass transfer: substrates react on the surface (no cage entry). (3) Tunable supramolecular channels. Benefiting from these structural and pore-regulating features, their benzaldehyde cyanosilylation efficiency is significantly enhanced: from 48 h, 91% yield, 82% ee to 12 h, nearly quantitative yield, 90% ee (rt), far outperforming free ligands (14% yield, no ee). Notably, most reported catalysts require −78 °C to 0 °C, with only ∼10% active at rt. Theoretical calculations confirm that enantioselectivity arises from the energy-favorable pathway. With 100-gram-scale synthesis validating its scalability, this work provides a low-cost, high-performance Al^III catalyst and a versatile platform for catalyst development via precise pore engineering and theoretical guidance.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":772,"journal":{"name":"Science China Chemistry","volume":"69 8","pages":"4364 - 4372"},"PeriodicalIF":9.8,"publicationDate":"2026-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Allies against the adversary: active-targeting hydrogen-bonded immunogenic nanomedicine for multimodal conquering of cancer cells","authors":"Yanggui Wu,&nbsp;Ting Li,&nbsp;Zeke Li,&nbsp;Senbin Chen,&nbsp;Jintao Zhu","doi":"10.1007/s11426-025-3208-5","DOIUrl":"10.1007/s11426-025-3208-5","url":null,"abstract":"<div><p>The cross-cutting field of cancer immunotherapy triggered by immunogenic cell death (ICD) has made encouraging achievements; however, such a research field is often hampered by deficient ICD-inducing efficacy due to low tumor-targeting and insufficient drug concentration in tumor cells. With these issues in mind, an active tumor targeting hydrogen-bonded (H-bonded) intelligent supramolecular polymeric nanomedicine FT/FOF@PDOB is constructed, featuring synergetic sonodynamic and chemotherapy (SDT/CT), and amplified ICD-inducing efficacy with strengthened immunological potency. To do so, an active-targeting six-arm star-shaped amphiphilic random copolymer vehicle, PDOB, is developed, comprising a biotin-mediated active tumor targeting regime, and diaminopyridine (DAP) motifs bearing hetero-complementary H-bonding array towards 5-fluorouracil (FU) moieties. The high-fidelity of H-bonding modularity from privileged DAP/FU pair enables specific binding interaction and co-loading of both FU-functionalized tetraphenylporphyrin-based sonosensitizer FT, and α,ω-FU-functionalized oxaliplatin-based symmetrical fuplatin dual-prodrug FOF. Consequently, H-bonded active-targeting nanomedicine FT/FOF@PDOB is readily fabricated, characterized by enhanced cargo uploading content and pH-responsive drug release, therefore endowing the synergetic therapy via FT-induced SDT and FOF-based CT, also facilitating the enhanced ICD effect and stronger anti-tumor immunity. Both <i>in vitro</i> and <i>in vivo</i> therapeutic regimes with outstanding anti-tumor outcomes are truly accomplished. The privileged advantages offered by H-bond design constitute a rising arsenal towards multimodal combination immunotherapy.</p><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":772,"journal":{"name":"Science China Chemistry","volume":"69 6","pages":"3026 - 3039"},"PeriodicalIF":9.7,"publicationDate":"2026-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148060530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Advanced electrolyte design for high performance rechargeable magnesium batteries","authors":"Wenduo Zhang,&nbsp;Xiaorong Song,&nbsp;Meimei Zhang,&nbsp;Zhimeng Hao,&nbsp;Gaojing Yang,&nbsp;Lili Wang,&nbsp;Jianmin Ma","doi":"10.1007/s11426-025-3264-4","DOIUrl":"10.1007/s11426-025-3264-4","url":null,"abstract":"<div><p>Rechargeable magnesium-ion batteries (RMBs) are emerging as attractive post-lithium-ion technologies due to their potential advantages in high energy density, intrinsic safety, economic viability, and resource sustainability. However, the advancement of magnesium batteries is hindered by the presence of a passivated film at the interface between the magnesium anode and electrolyte, as well as the slow diffusion kinetics of Mg²⁺. Therefore, designing RMBs electrolytes is considered an effective method to solve the above problems. This review provides a comprehensive analysis of advanced electrolyte design strategies for high-performance RMBs. It details the fundamental reaction mechanisms and existing challenges, including sluggish Mg²⁺ diffusion kinetics, irreversible anode passivation, narrow electrochemical windows, and corrosive/volatile components. This work systematically classifies and evaluates major electrolyte systems: Grignard reagents, Hexamethyldisilazide, Magnesium-Aluminum-Chloride Complex, boron-based salts, and ionic liquids. Key design principles for magnesium salts, solvents, and functional additives are discussed, emphasizing their roles in optimizing solvation structures, widening stability windows, suppressing passivation, enhancing ionic conductivity, and improving interfacial compatibility. The current progress in electrolyte development is briefly summarized, and future directions for magnesium batteries are outlined. This review offers insights into existing challenges and aims to inspire the design of commercially viable RMBs electrolytes.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":772,"journal":{"name":"Science China Chemistry","volume":"69 7","pages":"3303 - 3323"},"PeriodicalIF":9.8,"publicationDate":"2026-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148552966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sequential activation of dual-mode supramolecular optical switching for dynamic information encryption","authors":"Yeye Ai,&nbsp;Qingguo Zeng,&nbsp;Liangquan Zeng,&nbsp;Yuhan Liu,&nbsp;Haojie Mo,&nbsp;Wei Wang,&nbsp;Cong Fan,&nbsp;Kaiyang Zhu,&nbsp;Zhigang Ni,&nbsp;Chuande Wu,&nbsp;Lixin Wu,&nbsp;Yongguang Li","doi":"10.1007/s11426-025-3244-6","DOIUrl":"10.1007/s11426-025-3244-6","url":null,"abstract":"<div><p>Molecular optical switches with sequentially addressable responses offer a rational strategy for designing adaptive optical materials. We present <b>Py-SP</b>, a molecular switch created by covalently tethering a photochromic spiropyran (SP) to a pyrene (Py) fluorophore via a flexible alkyl linker. This design enables stepwise activation of optical responses through mechanical and photonic stimuli. The system exhibits stage-dependent emission and phase transitions: grinding disrupts <b>π-π</b> stacking and activates photochromism, while light induces reversible isomerization and fluorescence resonance energy transfer (FRET) mediated color switching. This allows precise control over monomer-excimer transitions and widely tunable luminescence across the visible spectrum. Leveraging its dynamic and programmable properties, <b>Py-SP</b> is demonstrated in advanced encryption applications such as self-erasing rewritable patterns and time-resolved multilevel security. This work provides a design pathway for intelligent luminescent systems with sequentially addressable functions and supports future anti-counterfeiting and information encryption technologies.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":772,"journal":{"name":"Science China Chemistry","volume":"69 7","pages":"3587 - 3593"},"PeriodicalIF":9.8,"publicationDate":"2026-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148552967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Simple and efficient donor’-donor-acceptor type ultraviolet electroluminescence fluorophores with an EQE beyond 9.2% at 1000 Nit","authors":"Hao Huang,&nbsp;Runjie Ding,&nbsp;Yintong Liu,&nbsp;Danyu Xie,&nbsp;Ling Peng,&nbsp;Yuchao Liu,&nbsp;Junjie Wang,&nbsp;Shian Ying,&nbsp;Dongge Ma,&nbsp;Shouke Yan","doi":"10.1007/s11426-025-3215-1","DOIUrl":"10.1007/s11426-025-3215-1","url":null,"abstract":"<div><p>The pursuit of straightforward yet efficient ultraviolet (UV) organic emitters remains a critical challenge within the realm of organic light-emitting diodes (OLEDs) that must simultaneously achieve high efficiency, minimal roll-off, and good color purity. Herein, we propose a reliable strategy to develop simple and effective bipolar donor’-donor-acceptor type UV emitters (3-mPPIC9N and 2-mPPIC9N), featuring a hybridized local and charge-transfer excited state, based on precise dipole moment engineering. Both of them exhibit remarkably high photoluminescence quantum yields of 95% and 92%, respectively. Notably, the 3-mPPIC9N with a low ground-state dipole moment affords significantly reduced non-radiative transition and weak π-π stacking interactions. The device incorporating 3-mPPIC9N exhibits narrowband UV emission with a peak at 390 nm, a full width at half maximum of 40 nm, and color coordinates of (0.166, 0.027). More impressively, the device achieves a remarkable external quantum efficiency (EQE) of 9.65%, as well as an unprecedentedly low efficiency roll-off, maintaining EQEs of 9.26% and 8.47% at 1000 and 2000 cd m⁻², respectively, which ranks among the highest efficiencies ever reported for UV-OLEDs operating at high brightness levels. Our work establishes a new benchmark in this field and paves the way for the accelerated commercialization of high-performance UV-OLEDs.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":772,"journal":{"name":"Science China Chemistry","volume":"69 7","pages":"3594 - 3601"},"PeriodicalIF":9.8,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148560041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}