Journal of Materials Chemistry C最新文献

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Smartphone-assisted low-cost paper-based colorimetric and fluorescent dual-response sensor for visual evaluation of food freshness 智能手机辅助的低成本纸张比色和荧光双响应传感器用于食品新鲜度的视觉评价
IF 5.1 2区 材料科学
Journal of Materials Chemistry C Pub Date : 2026-04-23 DOI: 10.1039/D6TC00179C
Junjie Chen, Yichao Wen, Haijian Meng, Lvxin Zhang, Simin Zhong, Dongmei Deng and Yonggang Min
{"title":"Smartphone-assisted low-cost paper-based colorimetric and fluorescent dual-response sensor for visual evaluation of food freshness","authors":"Junjie Chen, Yichao Wen, Haijian Meng, Lvxin Zhang, Simin Zhong, Dongmei Deng and Yonggang Min","doi":"10.1039/D6TC00179C","DOIUrl":"https://doi.org/10.1039/D6TC00179C","url":null,"abstract":"<p >Biogenic amines are critical food spoilage indicators, yet their on-site monitoring remains challenging. This study reports a smartphone-assisted, low-cost paper-based tag (BOH@tag) for the visual assessment of food freshness through a colorimetric and fluorescent dual-response to biogenic amines. The tag exhibits a distinct color transition from yellow to magenta upon reaction, high sensitivity (detection limit: 2.09 µM for cadaverine), rapid response (10 s), excellent selectivity, and a large color difference (Δ<em>E</em> = 134), enabling clear naked-eye and smartphone-based readout. Its practical utility is demonstrated by real-time monitoring of shrimp and chicken breast freshness under various storage conditions. This work provides a simple, portable, and reliable platform for on-site food quality surveillance.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 23","pages":" 10230-10239"},"PeriodicalIF":5.1,"publicationDate":"2026-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148261495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ultrahigh electromechanical output in ferroelectric polymer via a continuous and aligned pore design 通过连续和排列的孔设计在铁电聚合物中的超高机电输出
IF 5.1 2区 材料科学
Journal of Materials Chemistry C Pub Date : 2026-04-23 DOI: 10.1039/D6TC00545D
Linjie Zhu, Xiaofei Liu and Xin Zhang
{"title":"Ultrahigh electromechanical output in ferroelectric polymer via a continuous and aligned pore design","authors":"Linjie Zhu, Xiaofei Liu and Xin Zhang","doi":"10.1039/D6TC00545D","DOIUrl":"https://doi.org/10.1039/D6TC00545D","url":null,"abstract":"<p >Polymer piezoelectric materials are promising for wearable electronics and flexible sensing due to their intrinsic flexibility, yet their typically low piezoelectric coefficients limit practical performance. Here, we present a piezoelectret-based structural design that integrates continuous and aligned pores (CAP) into ferroelectric poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE)], substantially enhancing its electromechanical response. The polarized heterocharges distributed within the CAP architecture establish aligned macroscopic dipoles along the out-of-plane direction, while the in-plane continuous morphology increases the effective dipole density. As a result, the CAP-structured P(VDF-TrFE) achieves an ultrahigh equivalent piezoelectric coefficient of 5727 pC N<small><sup>−1</sup></small>. The film also exhibits excellent stability over 6000 cycles, high sensitivity, good linearity, and considerable power output. These properties make it promising for flexible electronics, as demonstrated in physiological monitoring and environmental vibration sensing. This work provides a straightforward strategy to boost the electromechanical output of piezoelectric polymers while retaining their flexibility and low weight, thereby advancing their application in next-generation flexible electronics.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 24","pages":" 10798-10804"},"PeriodicalIF":5.1,"publicationDate":"2026-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148314698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dual-functional Cr3+-doped far-red to NIR broadband phosphors for high-fidelity white lighting and non-destructive detection 用于高保真白色照明和无损检测的双功能Cr3+掺杂远红至近红外宽带荧光粉
IF 5.1 2区 材料科学
Journal of Materials Chemistry C Pub Date : 2026-04-22 DOI: 10.1039/D6TC00258G
Zhenwei Jia, Jingyi Gao, Xiaohui Zhao, Mengdi Yue, Li Wu, Yongfa Kong and Jingjun Xu
{"title":"Dual-functional Cr3+-doped far-red to NIR broadband phosphors for high-fidelity white lighting and non-destructive detection","authors":"Zhenwei Jia, Jingyi Gao, Xiaohui Zhao, Mengdi Yue, Li Wu, Yongfa Kong and Jingjun Xu","doi":"10.1039/D6TC00258G","DOIUrl":"https://doi.org/10.1039/D6TC00258G","url":null,"abstract":"<p >Far-red to near-infrared (NIR) broadband phosphors are critical components in next-generation optoelectronics, enabling compact light sources for invisible non-destructive detection and addressing the red deficiency in high-fidelity lighting. In this study, a novel NIR phosphor LiGaTi<small><sub>0.97</sub></small>Zr<small><sub>0.03</sub></small>O<small><sub>4</sub></small>:0.008Cr<small><sup>3+</sup></small> (LGTZ:0.008Cr<small><sup>3+</sup></small>) was synthesized <em>via</em> substitution of Ti<small><sup>4+</sup></small> with Zr<small><sup>4+</sup></small> in LiGaTiO<small><sub>4</sub></small>. The introduction of Zr<small><sup>4+</sup></small> induces a lattice distortion, which not only enhances the photoluminescent quantum yield to 50.7% but also improves thermal stability, with emission intensity at 423 K retaining 67% of its room-temperature value. The phosphor exhibits an ultra-wide excitation band (290–510 nm) and broad far-red to NIR emission (650–1000 nm), peaking at 725 nm. This distinctive spectral profile arises from the synergistic effects of strong electron–phonon coupling (<em>S</em> = 5.71), cation-disorder-induced inhomogeneous broadening, and high ligand covalency (Racah parameter <em>B</em> = 598.6 cm<small><sup>−1</sup></small>), which collectively enable its dual functionality. For non-destructive detection, a fabricated NIR pc-LED device demonstrates capability for deep-tissue biological imaging and internal fruit quality inspection. For high-fidelity white lighting, incorporating the LGTZ:Cr<small><sup>3+</sup></small> phosphor into UV- and blue-pumped white pc-LEDs effectively bridges the far-red spectral gap. This yields warm white light with a low correlated color temperature (CCT = 3967 K for UV-pumped LED; 3400 K for blue-pumped LED) and an outstanding color rendering index (Ra, R9 = 94.5, 98 for UV-pumped LED; 93.8, 97 for blue-pumped LED), stable with increasing driving current. This work presents a strategy for versatile broadband phosphors, advancing the frontiers of both invisible sensing technologies and visible solid-state lighting.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 23","pages":" 10211-10219"},"PeriodicalIF":5.1,"publicationDate":"2026-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148261539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Cu-based metal–organic framework with high specificity and efficient peroxidase-like catalytic activity for colorimetric biosensing 具有高特异性和高效过氧化物酶样催化活性的cu基金属有机骨架,用于比色生物传感
IF 5.1 2区 材料科学
Journal of Materials Chemistry C Pub Date : 2026-04-22 DOI: 10.1039/D6TC00768F
Shenghan Lin, He-Qi Zheng, Guodong Qian and Yuanjing Cui
{"title":"A Cu-based metal–organic framework with high specificity and efficient peroxidase-like catalytic activity for colorimetric biosensing","authors":"Shenghan Lin, He-Qi Zheng, Guodong Qian and Yuanjing Cui","doi":"10.1039/D6TC00768F","DOIUrl":"https://doi.org/10.1039/D6TC00768F","url":null,"abstract":"<p >Despite extensive studies demonstrating that nanozymes show superior properties compared to natural enzymes and traditional artificial enzymes, the development of highly specific nanozymes is still a challenge. In this study, a novel metal–organic framework (MOF), [Cu(TCPP)-(DMF)] (<strong>ZJU-132</strong>), was synthesized under mild mixed solvothermal conditions. It is constructed using 2,3,5,6-tetrakis (4-carboxyphenyl)pyrazine (H<small><sub>4</sub></small>TCPP) and Cu clusters. <strong>ZJU-132</strong> is capable of bifunctional enzyme-mimicking activity with oxidase- and peroxidase-like activities. The catalytic activities were examined by using o-phenylenediamine (OPD) as a chromogenic substrate to study oxidase- and peroxidase-like mimics. In this study, we first propose that <strong>ZJU-132</strong>, containing dinuclear copper centers mimicking the active sites of natural peroxidase, shows efficient peroxidase activity with good specificity and obvious superoxide dismutase-like or catalase-like activities. Meanwhile, <strong>ZJU-132</strong> has good specificity and high catalytic efficiency as a novel OPD peroxidase nanozyme with linear ranges (25–250 µM and 500–1000 µM) and a low detection limit (17 µM). The successful construction of <strong>ZJU-132</strong> provides a rational blueprint for the targeted design of highly specific nanozymes, opening new avenues for the practical translation of nanozymes in complex biological and environmental detection scenarios.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 24","pages":" 10573-10580"},"PeriodicalIF":5.1,"publicationDate":"2026-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148314666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Modulation of oxygen vacancy filaments and crystal structure by thermal annealing for high-performance solution-processed HfZrOx resistive memory 用热退火技术调制高性能溶液处理的HfZrOx阻性存储器中的氧空位丝和晶体结构
IF 5.1 2区 材料科学
Journal of Materials Chemistry C Pub Date : 2026-04-22 DOI: 10.1039/D6TC00849F
Chih-Chieh Hsu, Zi-Rong Qiu, Xuan-Zhi Zhang, Wun-Ciang Jhang, Tsung-Chun Hsieh, Yen-Lin Chiang, Bo-An Ko, Wen-Ling Shen and Sungjun Kim
{"title":"Modulation of oxygen vacancy filaments and crystal structure by thermal annealing for high-performance solution-processed HfZrOx resistive memory","authors":"Chih-Chieh Hsu, Zi-Rong Qiu, Xuan-Zhi Zhang, Wun-Ciang Jhang, Tsung-Chun Hsieh, Yen-Lin Chiang, Bo-An Ko, Wen-Ling Shen and Sungjun Kim","doi":"10.1039/D6TC00849F","DOIUrl":"https://doi.org/10.1039/D6TC00849F","url":null,"abstract":"<p >This study demonstrates solution-processed Ti/HZO/n<small><sup>+</sup></small>-Si write-once-read-many-times (WORM) memory devices. By systematically evaluating HZO resistive switching (RS) layers annealed from 300 °C to 900 °C, we establish a direct correlation between temperature-dependent evolution of oxygen vacancies, structural crystallinity, and the resulting RS performance. XPS and XRD analyses reveal that increasing the temperature facilitates a structural transition of the HZO films from an amorphous state to a polycrystalline monoclinic phase, while reducing the oxygen vacancy concentration from 43.9% to 17.3%. Temperature-dependent measurements combined with different voltage sweep directions confirm that the RS mechanism of the memories is governed by oxygen-vacancy conductive filaments. The 700 °C-annealed device exhibits optimal performance, featuring an ultralow OFF-state current of ∼10<small><sup>−11</sup></small> A, a remarkable ON/OFF current ratio of ∼10<small><sup>7</sup></small>, and high-speed switching of ∼30 ns with a low programming energy of ∼114.4 pJ, while maintaining robust data retention and read-disturb immunity extrapolated to safely exceed 10 years at an elevated temperature of 85 °C. This filamentary process is degraded at lower temperatures by excessive leakage paths and is completely suppressed at 900 °C due to severe vacancy reduction and the formation of a highly insulating monoclinic HfO<small><sub>2</sub></small> phase.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 23","pages":" 10251-10260"},"PeriodicalIF":5.1,"publicationDate":"2026-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148261497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A molecular strategy for Raman enhancement 拉曼增强的分子策略
IF 5.1 2区 材料科学
Journal of Materials Chemistry C Pub Date : 2026-04-22 DOI: 10.1039/D6TC00283H
Ying-Fan Tan, Yangbo Zhang, Xiong Wang, Ning Zhou and Qingyun Wan
{"title":"A molecular strategy for Raman enhancement","authors":"Ying-Fan Tan, Yangbo Zhang, Xiong Wang, Ning Zhou and Qingyun Wan","doi":"10.1039/D6TC00283H","DOIUrl":"https://doi.org/10.1039/D6TC00283H","url":null,"abstract":"<p >Raman spectroscopy has been widely utilized for ultrasensitive molecular detection, enabling breakthroughs in biomedical diagnostics, environmental monitoring, and nanotechnology. Amplifying the inherently weak Raman signal is essential for analysis at trace concentrations. Herein, we developed a molecular-level platform that employs discrete molecules as a Raman-enhancement scaffold, amplifying Raman signals through the formation of ion pairs. This method utilizes the donor metal complex [Ni(dmit)<small><sub>2</sub></small>]<small><sup>−</sup></small> (dmit = 2-thioxo-1,3-dithiol-4,5-dithiolate) to sensitively detect target molecules <em>via</em> strong intermolecular charge transfer interactions. Using this complex, target molecules can be detected with high sensitivity at concentrations as low as 1 × 10<small><sup>−8</sup></small> M. These findings shed light on the mechanism by which intermolecular charge transfer enhances Raman signals at the molecular level. Furthermore, this molecule-based strategy remains effective in an air-dried phosphate-buffered saline (PBS) environment, indicating its potential application by enabling molecular detection in biological systems.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 24","pages":" 10500-10509"},"PeriodicalIF":5.1,"publicationDate":"2026-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148314659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A layer-stacking structure enabling K2TiF6:Mn4+ platelet crystals for inorganic high-power WLED packaging 一种层堆叠结构,可使K2TiF6:Mn4+血小板晶体用于无机大功率WLED封装
IF 5.1 2区 材料科学
Journal of Materials Chemistry C Pub Date : 2026-04-22 DOI: 10.1039/D6TC00571C
Yusen Liu, Tianyue Shi, Mingxin Zhang, Dan Yue, Liying Zhang and Haipeng Ji
{"title":"A layer-stacking structure enabling K2TiF6:Mn4+ platelet crystals for inorganic high-power WLED packaging","authors":"Yusen Liu, Tianyue Shi, Mingxin Zhang, Dan Yue, Liying Zhang and Haipeng Ji","doi":"10.1039/D6TC00571C","DOIUrl":"https://doi.org/10.1039/D6TC00571C","url":null,"abstract":"<p >Conventional high power white LEDs (WLEDs) rely on the coating of micrometer-sized phosphor powder blends onto LED chip arrays using organic resins, which suffer from thermal accumulation and yellowing of the resin. Bulk phosphor crystals with a platelet morphology, geometrically compatible with chip surfaces, offer a solution to eliminate organic encapsulants. Red-emitting fluoride ceramics have been prepared, but no platelet crystals have been reported. Herein, the hexagonal K<small><sub>2</sub></small>TiF<small><sub>6</sub></small>:Mn<small><sup>4+</sup></small> was specifically selected for its pronounced layered stacking of [TiF<small><sub>6</sub></small>]<small><sup>2−</sup></small> octahedral sheets perpendicular to the <em>c</em>-axis, favoring the growth of platelet crystals. Red-emitting platelet crystals up to 5 mm were successfully grown <em>via</em> a cooling-induced crystallization method, and the effects of precursor saturation, cooling protocols, and Mn<small><sup>4+</sup></small> doping level on the crystal quality and photoluminescence were investigated. The optimized crystals exhibit internal and external quantum efficiencies of 90.6% and 70.2%, respectively, along with markedly enhanced moisture resistance compared to the powder counterpart. These K<small><sub>2</sub></small>TiF<small><sub>6</sub></small>:Mn<small><sup>4+</sup></small> platelet crystals were then packaged onto high-power blue LED chips together with Y<small><sub>3</sub></small>Al<small><sub>5</sub></small>O<small><sub>12</sub></small>:Ce<small><sup>3+</sup></small>-corundum ceramic plates in a pseudo all-inorganic manner that eliminates organic binders. The resulting WLEDs achieve a color-rendering index (<em>R</em><small><sub>a</sub></small>) of 85, an <em>R</em><small><sub>9</sub></small> value of 42, a correlated color temperature of 3183 K, and a luminous efficacy of 79.3 lm W<small><sup>−1</sup></small>. This work establishes a platelet crystal-growth strategy toward organic binder-free phosphor-converted WLEDs.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 24","pages":" 10564-10572"},"PeriodicalIF":5.1,"publicationDate":"2026-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148314665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Triple-readout luminescence thermometry in a heterodinuclear Yb–Er complex and performance comparison with the homodinuclear analogues 异双核镱络合物的三读出发光测温及其与同双核类似物的性能比较
IF 5.1 2区 材料科学
Journal of Materials Chemistry C Pub Date : 2026-04-22 DOI: 10.1039/D5TC04200C
Yolimar Gil, Julio Corredoira-Vázquez, Ricardo Costa de Santana, Andres Vega, Albano N. Carneiro Neto, Daniel Aravena, Evgenia Spodine, Carlos D. S. Brites, Luís D. Carlos and Pablo Fuentealba
{"title":"Triple-readout luminescence thermometry in a heterodinuclear Yb–Er complex and performance comparison with the homodinuclear analogues","authors":"Yolimar Gil, Julio Corredoira-Vázquez, Ricardo Costa de Santana, Andres Vega, Albano N. Carneiro Neto, Daniel Aravena, Evgenia Spodine, Carlos D. S. Brites, Luís D. Carlos and Pablo Fuentealba","doi":"10.1039/D5TC04200C","DOIUrl":"https://doi.org/10.1039/D5TC04200C","url":null,"abstract":"<p >This work reports the thermometric properties of a heterodinuclear Yb–Er complex, [{Yb(tta)<small><sub>3</sub></small>}(µ<small><sup>2</sup></small>-bpm){Er(tta)<small><sub>3</sub></small>}] (<strong>1</strong>) (tta<small><sup>−</sup></small> = thenoyltrifluoroacetonate and bpm = 2,2'-bipyrimidine), together with the corresponding homodinuclear analogues [{Ln(tta)<small><sub>3</sub></small>}<small><sub>2</sub></small>(µ<small><sup>2</sup></small>-bpm)] (Ln = Yb(<strong>2</strong>), Er(<strong>3</strong>)). Under 394 nm excitation, complex <strong>1</strong> enables temperature sensing over the 12–310 K range using three luminescence intensity ratio (LIR) readouts based on Yb<small><sup>3+</sup></small> and Er<small><sup>3+</sup></small> emissions, while complexes <strong>2</strong> and <strong>3</strong> provide single-ion-based thermometric responses. Among these, the Yb<small><sup>3+</sup></small> (<small><sup>2</sup></small>F<small><sub>5/2</sub></small> → <small><sup>2</sup></small>F<small><sub>7/2</sub></small>)/Er<small><sup>3+</sup></small>(<small><sup>4</sup></small>I<small><sub>13/2</sub></small> → <small><sup>4</sup></small>I<small><sub>15/2</sub></small>) LIR yields the highest relative thermal sensitivity for <strong>1</strong>, with a maximum value (<em>S</em><small><sub>m</sub></small>) of 2.5% K<small><sup>−1</sup></small> at 12 K, and 1.0% K<small><sup>−1</sup></small> at 310 K. Importantly, <strong>1</strong> represents the first heterodinuclear Yb–Er complex exhibiting thermometric properties and, more remarkably, enabling temperature sensing through three distinct LIR-based readouts. The Yb-only complex <strong>2</strong> exhibits <em>S</em><small><sub>m</sub></small> = 3.6% K<small><sup>−1</sup></small> at 110 K, among the highest reported for Yb<small><sup>3+</sup></small> molecular thermometers, while Er-based readouts in <strong>1</strong> and <strong>3</strong> provide moderate sensitivities at higher temperatures. Comparative analysis highlights the role of Yb<small><sup>3+</sup></small> → Er<small><sup>3+</sup></small> energy transfer in modulating the thermometric behaviour of the heterodinuclear complex. Theoretical calculations support the presence of metal–metal and ligand-mediated energy-transfer pathways, which contribute to the observed temperature-dependent luminescence response.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 23","pages":" 10332-10344"},"PeriodicalIF":5.1,"publicationDate":"2026-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148261432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A gradient-structured ionic bimodal sensor with a giant piezoionic and thermal-resistive effect for crosstalk-free pressure–temperature perception 具有巨大压电和热阻效应的梯度结构离子双峰传感器,用于无串扰压力-温度感知
IF 5.1 2区 材料科学
Journal of Materials Chemistry C Pub Date : 2026-04-22 DOI: 10.1039/D6TC00490C
Huanyu Liu, Yongqi Kuang, Qizhao Liang, HongYan Chen, Wen Li, Peng Wu and Yunhui Wu
{"title":"A gradient-structured ionic bimodal sensor with a giant piezoionic and thermal-resistive effect for crosstalk-free pressure–temperature perception","authors":"Huanyu Liu, Yongqi Kuang, Qizhao Liang, HongYan Chen, Wen Li, Peng Wu and Yunhui Wu","doi":"10.1039/D6TC00490C","DOIUrl":"https://doi.org/10.1039/D6TC00490C","url":null,"abstract":"<p >Pressure–temperature sensors based on ionogels show significant potential for mimicking the complex sensing functions of human skin. However, they suffer from crosstalk because the ionic conductivity or resistance signal is sensitive to both temperature and pressure. Herein, to address this issue, a gradient-structured ionic sensor with the combination of piezoionic and thermal-resistive effects was designed as a bimodal sensor to monitor the temperature and pressure without crosstalk. The piezoionic-induced self-generated potential responds exclusively to pressure, whereas another resistance component within the sensor is primarily sensitive to temperature, owing to its specific design. Furthermore, it demonstrates a high voltage signal of ∼200 mV in piezoionic response, surpassing most of the conventional piezoionic materials. Meanwhile, the bimodal sensor exhibits an outstanding temperature-sensing response with a relatively high sensitivity of −3.54%/°C. Crosstalk investigations reveal that the sensor enables independent pressure sensing within 0–348 kPa at 30–50 °C and crosstalk-free temperature detection under 0–49 kPa. Additionally, this sensor exhibits rapid self-healing capability. Owing to these advantages, the bimodal sensor can independently monitor pressure and temperature stimuli, and evaluate the softness of materials, showcasing its potential in robotic tactile sensing.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 24","pages":" 10528-10537"},"PeriodicalIF":5.1,"publicationDate":"2026-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148314661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Achieving narrowband deep-blue electroluminescence (CIEy = 0.04) via a fluorinated and sterically modulated MR-TADF emitter 通过氟化和立体调制MR-TADF发射极实现窄带深蓝色电致发光(CIEy = 0.04)
IF 5.1 2区 材料科学
Journal of Materials Chemistry C Pub Date : 2026-04-22 DOI: 10.1039/D6TC00428H
Haiping Wen, Ziyan Zhao, Rujia Yuan, Qiuqi Wang, Huiqi Xie and Yingyuan Hu
{"title":"Achieving narrowband deep-blue electroluminescence (CIEy = 0.04) via a fluorinated and sterically modulated MR-TADF emitter","authors":"Haiping Wen, Ziyan Zhao, Rujia Yuan, Qiuqi Wang, Huiqi Xie and Yingyuan Hu","doi":"10.1039/D6TC00428H","DOIUrl":"https://doi.org/10.1039/D6TC00428H","url":null,"abstract":"<p >Moving toward next-generation ultrahigh-definition displays, achieving narrowband deep-blue organic light-emitting diodes (OLEDs) that satisfy the stringent Recommendation ITU-R BT.2020 (Rec.2020) color target remains challenging. Here we report <strong>4FBN-Me</strong>, a fluorinated and sterically modulated multi-resonance thermally activated delayed fluorescence (MR-TADF) emitter based on a boron–nitrogen framework. <strong>4FBN-Me</strong> can be synthesized <em>via</em> a lithium-free, high-yield borylation reaction. Photophysical investigations reveal narrowband blue emission with a full width at half maximum (FWHM) of 24 nm in solution, a high photoluminescence quantum yield (PLQY) of 75.8%, and delayed fluorescence with a reverse intersystem crossing rate (<em>k</em><small><sub>RISC</sub></small>) of 2.32 × 10<small><sup>5</sup></small> s<small><sup>−1</sup></small>. The corresponding vacuum-deposited OLEDs deliver deep-blue electroluminescence peaking at 440 nm with a FWHM of 27 nm, Commission Internationale de l’Éclairage (CIE) coordinates of (0.154, 0.040), and a maximum external quantum efficiency (EQE<small><sub>max</sub></small>) of 12.71%. These results demonstrate that fluorination combined with minimal steric modulation is an effective molecular design strategy for achieving narrowband deep-blue MR-TADF emitters with promising electroluminescence performance.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 22","pages":" 9704-9711"},"PeriodicalIF":5.1,"publicationDate":"2026-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148208681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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