Journal of Materials Chemistry C最新文献_第8页

Switchable circularly polarized luminescent Mn-based hybrid metal halides†

IF 5.7 2区材料科学

Journal of Materials Chemistry C Pub Date : 2024-11-28 DOI: 10.1039/D4TC01823K

Xuexia Yu, Songbing Zhong, Zeyi Guo, Jia Guan, Hao Tang, Xiaolong He, Yihuang Chen and Shuang Pan

{"title":"Switchable circularly polarized luminescent Mn-based hybrid metal halides†","authors":"Xuexia Yu, Songbing Zhong, Zeyi Guo, Jia Guan, Hao Tang, Xiaolong He, Yihuang Chen and Shuang Pan","doi":"10.1039/D4TC01823K","DOIUrl":"https://doi.org/10.1039/D4TC01823K","url":null,"abstract":"Hybrid metal halides with stimuli-responsive circularly polarized luminescence (CPL) have risen to prominence benefiting from their facile preparation and versatile chiral applications. Despite recent rapid developments, the ability to craft hybrid metal halides with strong and switchable CPL remains a challenging issue. This report presents the synthesis of chiral zero-dimensional (0D) hybrid metal halides demonstrating robust and switchable CPL activity. Specifically, a pair of 0D chiral hybrid metal halides (R-/S-MPZ)MnBr4 and the corresponding racemic counterparts (rac-MPZ)MnBr4 were synthesized by introducing R-/S-/rac-MPZ units (R-/S-/rac-MPZ = R-/S-/rac-2-methylpiperazine) as organic cations. The synthesized compounds achieved stable and efficient CPL emission with a notable luminescent anisotropy factor (glum) of up to 1.12 × 10−2. Remarkably, reversible CPL can be manipulated to achieve dependence on the variation of environmental humidity and temperature. The findings open up a promising pathway to controllably tune chiroptical behavior of metal halides with large and switchable CPL to develop new security optical coding and hidden communication.","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 5","pages":" 2190-2197"},"PeriodicalIF":5.7,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107460","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

Nanoporous anodic alumina photonic crystals for solid-state lasing systems: state-of-the-art and perspectives 用于固体激光系统的纳米多孔阳极氧化铝光子晶体：最新技术和观点

IF 5.7 2区材料科学

Journal of Materials Chemistry C Pub Date : 2024-11-28 DOI: 10.1039/D4TC04166F

Satyathiran Gunenthiran, Juan Wang, Cheryl Suwen Law, Andrew D. Abell, Zeyad T. Alwahabi and Abel Santos

{"title":"Nanoporous anodic alumina photonic crystals for solid-state lasing systems: state-of-the-art and perspectives","authors":"Satyathiran Gunenthiran, Juan Wang, Cheryl Suwen Law, Andrew D. Abell, Zeyad T. Alwahabi and Abel Santos","doi":"10.1039/D4TC04166F","DOIUrl":"https://doi.org/10.1039/D4TC04166F","url":null,"abstract":"Photonic crystals (PCs)—dielectric materials with a refractive index that is modulated periodically across the space—are essential components for a broad variety of photonic technologies requiring precise light-manipulation capabilities such as telecommunications, sensing, imaging, energy, stealth, and environmental remediation. Of all these, the emission of light from a radiation source embedded within a PC structure has been envisioned for engineering novel forms of light-emitting and quantum optics systems since the formalization of the PC concept by Yablonovitch and Jonh in 1987. Nanoporous anodic alumina (NAA) fabricated by electrochemical oxidation—anodization—of aluminum provides an ideal and versatile effective medium that can be precisely engineered to create multiple forms of PC structures to harness distinct light–matter interactions (e.g., Bragg diffraction, constructive recirculation, confinement, and interference). The nanoporous framework of NAA-PCs can accommodate a range of light-emitting materials as gain media to modulate the properties of emitted light across the optical spectrum. This review provides an up-to-date overview of recent advances in the field of NAA-PC technology, including new anodization strategies and photonic crystal structures, and focuses on their application in light-emitting and lasing systems. We conclude our review with a list of challenges and opportunities, and the future prospects of this exciting field.","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 3","pages":" 985-1012"},"PeriodicalIF":5.7,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142994098","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

Multifunctional azo-BODIPY-functionalised upconversion nanoparticles as sensors of hypoxia in biological environments†

IF 5.7 2区材料科学

Journal of Materials Chemistry C Pub Date : 2024-11-27 DOI: 10.1039/D4TC03302G

Jingke Yao, Silvia Simón-Fuente, Gabriel Lopez-Peña, Silvia Gómez-Pastor, Santiago Guisan-Ceinos, Riccardo Marin, Emma Martín Rodríguez, Daniel Jaque, Francisco Sanz-Rodríguez, Maria Ribagorda and Dirk H. Ortgies

{"title":"Multifunctional azo-BODIPY-functionalised upconversion nanoparticles as sensors of hypoxia in biological environments†","authors":"Jingke Yao, Silvia Simón-Fuente, Gabriel Lopez-Peña, Silvia Gómez-Pastor, Santiago Guisan-Ceinos, Riccardo Marin, Emma Martín Rodríguez, Daniel Jaque, Francisco Sanz-Rodríguez, Maria Ribagorda and Dirk H. Ortgies","doi":"10.1039/D4TC03302G","DOIUrl":"https://doi.org/10.1039/D4TC03302G","url":null,"abstract":"In this work, a hypoxia-sensitive nanoprobe is developed by coating the surface of upconverting core/shell nanoparticles (NaGdF4: 2%Yb3+, 3%Nd3+, 0.2%Tm3+/NaYF4) with a non-fluorescent azo-dye based on a boron-dipyrromethene functionalized azo compound. Azo-dyes are able to quench fluorescence emissions due to their N<img>N azo bond, which results in the absorption of most visible emissions of the nanoparticles. However, in a biological environment suffering hypoxia, the azo bond is reduced, which allows the recovery of the nanoparticles’ upconversion emissions. Thereby a near-infrared excitable sensor with an azo-dye is created and for the first time not only enables excitation via NIR at biocompatible 808 nm but also continuous imaging and tracking of the probe in the infrared due to NIR-emissions enabled by the dopant combination since quenching only occurs in the visible. These multifunctional (imaging and sensing) nanoparticles are characterized, their behaviour in reductive and hypoxic environments is determined and the detection of reducing conditions in a hypoxic environment is demonstrated in cells.","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 4","pages":" 1972-1981"},"PeriodicalIF":5.7,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107523","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

Exploring π-extended chiral ligands for the direct detection of circularly polarized light in 2D chiral perovskites† 探索π扩展手性配体直接探测二维手性钙钛矿中的圆偏振光

IF 5.7 2区材料科学

Journal of Materials Chemistry C Pub Date : 2024-11-27 DOI: 10.1039/D4TC04124K

Taesu Jeon, Doyeong Yeo, Wonbin Choi, Hongki Kim, In Hwan Jung and Joon Hak Oh

引用次数: 0

Efficient narrow-band green phosphors for mini-LED displays using dual strategies of high concentration quenching and energy transfer†

IF 5.7 2区材料科学

Journal of Materials Chemistry C Pub Date : 2024-11-27 DOI: 10.1039/D4TC04253K

Runtian Kang, Takatoshi Seto and Yuhua Wang

{"title":"Efficient narrow-band green phosphors for mini-LED displays using dual strategies of high concentration quenching and energy transfer†","authors":"Runtian Kang, Takatoshi Seto and Yuhua Wang","doi":"10.1039/D4TC04253K","DOIUrl":"https://doi.org/10.1039/D4TC04253K","url":null,"abstract":"Narrow-band green phosphors play an important role in displays. Through energy transfer from Eu2+ to Mn2+ and high concentration quenching of Mn2+ in GdMgAl11O19(GMAO), the quantum efficiency of GMAO:Mn2+ is enhanced from 26% to 45%. In GMAO, Mn2+ ions show a narrow green emission with a half-width at half-maximum (FWHM) of 27 nm. The energy transfer mechanism between Eu2+ and Mn2+ in GMAO is ascribed to the quadrupole–quadrupole interaction. The energy transfer efficiency of this series of phosphors can reach 76.64%. By combining GMAO:0.07Eu2+,0.7Mn2+,K2SiF6 (KSF):Mn4+, and BaMgAl10O17 (BAM):Eu2+ with an LED chip, a white light-emitting diode (WLED) that achieves a color gamut of up to 110% National Television System Committee (NTSC) and a luminous efficacy of up to 53.27 lm W−1 is constructed. In addition, a uniform green luminescent array with a pixel size of 20 μm × 40 μm is obtained using GMAO:0.07Eu2+,0.7Mn2+. These results indicate that this series of phosphors have potential application in Mini-LED displays.","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 5","pages":" 2286-2294"},"PeriodicalIF":5.7,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107446","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

Multilayer films for photon upconversion-driven photoswitching† 用于光子上转换驱动的光电开关的多层薄膜。

IF 5.7 2区材料科学

Journal of Materials Chemistry C Pub Date : 2024-11-26 DOI: 10.1039/D4TC03513E

Zhihang Wang, Beatrice E. Jones, Larissa G. Franca, Takashi Lawson, Martyn Jevric, Kasper Moth-Poulsen and Rachel C. Evans

{"title":"Multilayer films for photon upconversion-driven photoswitching†","authors":"Zhihang Wang, Beatrice E. Jones, Larissa G. Franca, Takashi Lawson, Martyn Jevric, Kasper Moth-Poulsen and Rachel C. Evans","doi":"10.1039/D4TC03513E","DOIUrl":"10.1039/D4TC03513E","url":null,"abstract":"Photoswitchable materials are of significant interest for diverse applications from energy and data storage to additive manufacturing and soft robotics. However, the absorption profile is often a limiting factor for practical applications. This can be overcome using indirect excitation via complementary photophysical pathways, such as triplet sensitisation or photon upconversion. Here, we demonstrate the use of triplet–triplet annihilation upconversion (TTA-UC) to drive photoswitching of the energy storing photoswitch norbornadiene–quadricyclane (NBD–QC) in the solid-state. A photoswitchable bilayer polymer film, incorporating the TTA-UC sensitiser–emitter pair of platinum octaethylporphyrin (PtOEP) and 9,10-diphenylanthracene (DPA), was used to trigger the photoinduced [2+2] cycloaddition of NBD to form QC using visible instead of UV light. The isolated TTA-UC film showed green-to-blue upconversion, with a competitive upconversion efficiency of (1.9 ± 0.1%) for the solid-state in air. Direct photoswitching of the isolated NBD film was demonstrated with a narrow UV light source (340 nm). However, in the bilayer film, spectral overlap between the upconverted blue emission in the TTA-UC film and the absorbance band of the NBD film resulted in indirect photoswitching using visible green light (532 nm, 1 W cm−2), thus extending the spectral operational window of the photoswitching film. The results demonstrate proof-of-feasibility of TTA-UC-promoted photoswitching in the solid-state, paving the way for potential applications in light-harvesting devices and smart coatings, using a wider selection of irradiation wavelengths.","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 47","pages":" 19030-19034"},"PeriodicalIF":5.7,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11589804/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142749426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A stimulus-triggered luminescent hydrogel with Al3+ for visible color tunability in advanced information encryption applications†

IF 5.7 2区材料科学

Journal of Materials Chemistry C Pub Date : 2024-11-26 DOI: 10.1039/D4TC03849E

Lina Liu, Kai Cui, Fuqiang Song, Daoyuan Wang, Baoyan Wang and Xiaoliang Tang

{"title":"A stimulus-triggered luminescent hydrogel with Al3+ for visible color tunability in advanced information encryption applications†","authors":"Lina Liu, Kai Cui, Fuqiang Song, Daoyuan Wang, Baoyan Wang and Xiaoliang Tang","doi":"10.1039/D4TC03849E","DOIUrl":"https://doi.org/10.1039/D4TC03849E","url":null,"abstract":"Color-tunable luminescent hydrogels have shown significant potential in smart display devices, data encryption and multilevel anti-counterfeiting due to their excellent flexibility, functional versatility and optical properties. However, developing hydrogels that exhibit prominent optical decryption capabilities while maintaining robust mechanical properties remains a challenge. Herein, we present an Al3+ stimulus-triggered luminescent hydrogel with the integrated properties of wide multi-color tunability, self-healing capacity, high strength (160%) and an impressive toughness (180 kJ m−3). The double-network in the hydrogel with rich hydrogen bonds is well compatible with various luminophores. These include luminescent layered rare earth hydroxide nanosheets (LRH NSs) with red/green (R/G) emission and a chemosensor molecule that displays a fluorescence “turn-on” change in blue (B) emission only in the presence of Al3+ as a stimulus. Consequently, this smart hybrid hydrogel not only provides an adjustable tool for tuning the visible color of soft materials based on orthogonal responsive R/G/B three-primary-color luminescence, but also acts as a specific key for enabling color-switchable anti-counterfeiting and information encryption/decryption. These unique optical properties of the luminescent soft material highlight its potential as a hydrogel-based functional platform for the development of intelligent and color-tunable cryptographic devices with low cost, facile synthesis, and good processability.","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 4","pages":" 1936-1944"},"PeriodicalIF":5.7,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107520","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

Jahn–Teller distortion induced two-dimensional ferroelasticity in Mn2CuO6 monolayers with antiferromagnetic ordering†

IF 5.7 2区材料科学

Journal of Materials Chemistry C Pub Date : 2024-11-26 DOI: 10.1039/D4TC03801K

Xinkai Ding and Gaoyang Gou

{"title":"Jahn–Teller distortion induced two-dimensional ferroelasticity in Mn2CuO6 monolayers with antiferromagnetic ordering†","authors":"Xinkai Ding and Gaoyang Gou","doi":"10.1039/D4TC03801K","DOIUrl":"https://doi.org/10.1039/D4TC03801K","url":null,"abstract":"Designing and tuning Jahn–Teller (JT) distortion of two-dimensional (2D) materials plays a crucial role in multifunctional device applications, where significant 2D ferroelasticity in the crystal can be achieved by collaborative interactions among the spin, orbital and lattice degrees of freedom. Based on first-principles calculations, we report a Mn2CuO6 monolayer, a structural analogue derived from birnessite (δ-MnO2), as the material candidate for achieving JT distortion induced 2D ferroelasticity with antiferromagnetic (AFM) ordering. By performing electronic and magnetic property simulations as well as crystallographic symmetry analysis, we found that the ferroelastic (FE) deformation of the Mn2CuO6 monolayer is not only attributed to the structural phase transition, but also to JT distortion derived from the interplay among the electron spin, AFM ordering and crystal lattice, associated with metal–semiconductor and ferrimagnetic (FiM)–AFM transitions. The magnitude of FE strain in Mn2CuO6 monolayers is comparable with those of other typical 2D FE materials (e.g. 1T-MoS2). The simulation of AFM–paramangnetic (PM) transition temperature (TN ∼ 332 K) for 2D FE in Mn2CuO6 further reveals the robust orbital orderings and room-temperature stable ferroelasticity. In addition, the FE switching among the three orientational variants is accompanied by the transformations of AFM spin textures, and a low transition barrier indicates that magnetic-tunable 2D lattice deformation can be readily achievable under experimental conditions, paving the way for the development of 2D magnetostriction engineering for controllable electronic device applications.","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 5","pages":" 2322-2329"},"PeriodicalIF":5.7,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107645","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

Dynamic colorimetric sensing with all-dielectric metasurfaces governed by bound states in the continuum†

IF 5.7 2区材料科学

Journal of Materials Chemistry C Pub Date : 2024-11-26 DOI: 10.1039/D4TC04118F

Yanli Xu, Yinye Yang, Hongxu Li and Lirong Ren

{"title":"Dynamic colorimetric sensing with all-dielectric metasurfaces governed by bound states in the continuum†","authors":"Yanli Xu, Yinye Yang, Hongxu Li and Lirong Ren","doi":"10.1039/D4TC04118F","DOIUrl":"https://doi.org/10.1039/D4TC04118F","url":null,"abstract":"High-sensitivity refractive index (RI) colorimetric sensing is achieved by utilizing the all-dielectric bound in continuum (BIC) metasurface in this work. By adjusting the spacing between the nanodisk dimers of the lithium niobate (LN) metasurface, the transformation of BIC into QBIC has resulted in a reflection resonance with a bandwidth of less than 1 nm and a reflection efficiency of up to 98%. This resonance peak is suitable for detecting extremely small changes in refractive index, resulting in a RI figure of merit (FOM) of up to 330 RIU−1 and a remarkable quality (Q)-factor of up to 1800. Furthermore, due to the stretchability of the PDMS substrate, the metasurface can be actively and continuously tuned by up to 23% strain, covering nearly 150 nm of the visible light spectrum, and its reflection color covers 103% of the sRGB. According to CIELab 1931 analysis, a distinct color change is induced for every 0.01 change in environmental RI, with an average color difference of up to 5.36, achieving ultra-high sensitivity and naked-eye discernible multi-frequency colorimetric sensing.","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 4","pages":" 1747-1756"},"PeriodicalIF":5.7,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107579","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

Non-Kekulé copolymer films for optoelectronics†

IF 5.7 2区材料科学

Journal of Materials Chemistry C Pub Date : 2024-11-26 DOI: 10.1039/D4TC03420A

Niannian Wu, Nobuhiko Mitoma, Shunsuke Mori, Yi Ling Chiew, Xiuzhen Yu, Yugo Oshima, Shuxu Wang, Jinxu Liu and Takuzo Aida

引用次数: 0