Journal of Materials Chemistry C最新文献

{"title":"Electroactive naphthalimide and naphthalenediimide interlayers for inverted perovskite solar cells","authors":"Konstantina-Kalliopi Armadorou, Ghewa AlSabeh, Andrea Vezzosi, Murad Najafov, Pietro Nasturzio, Paul Zimmermann, Alexander Hinderhofer, Jinhyun Kim, Likai Zheng, Tiziano Agostino Caldara, Virginia Carnevali, Vladislav Slama, Nikolaos Lempesis, Frank Schreiber, Shaik M. Zakeeruddin, Ursula Rothlisberger, Lukas Pfeifer, Felix T. Eickemeyer, Jovana V. Milić and Michael Grätzel","doi":"10.1039/D5TC01418B","DOIUrl":"10.1039/D5TC01418B","url":null,"abstract":"<p >Perovskite solar cells have garnered significant interest, yet their limited operational stability remains a major challenge. This is especially pronounced at the interface with charge transport layers. In inverted p–i–n perovskite solar cells, fullerene-based electron transport layers pose critical stability issues. This has stimulated the application of low-dimensional perovskite interlayers featuring alkylammonium-based organic spacers that template perovskite slabs to enhance operational stabilities. However, these materials are traditionally based on organic cations that are electronically insulating, limiting charge extraction and device performance. We demonstrate the capacity to access low-dimensional perovskites incorporating electron-accepting naphthalimide- and naphthalenediimide-based spacers and use the corresponding organic moieties to modify or replace fullerene electron-transport layers, forming an electroactive interface that serves charge-transport. This resulted in superior performance with power conversion efficiencies exceeding 20% and enhanced operational stability, highlighting the potential of electroactive interlayers for advancing inverted perovskite solar cells.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 39","pages":" 20040-20048"},"PeriodicalIF":5.1,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12482984/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145204987","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}

{"title":"Understanding the thermometric behaviour of LiLuF₄:Tm³⁺,Yb³.","authors":"Mirijam Lederer, Maximilian Stremel, Ian Pompermayer Machado, Tom Förster, Syed S Razi, Markus Suta, Anna M Kaczmarek","doi":"10.1039/d5tc01916h","DOIUrl":"10.1039/d5tc01916h","url":null,"abstract":"<p><p>The Er³⁺, Yb³⁺ upconversion couple, with its background-free green emission arising from the two thermally coupled ²H_11/2 and ⁴S_3/2 levels of Er³⁺, is a classic \"workhorse\" example of luminescent Boltzmann thermometry. In contrast, the Tm³⁺, Yb³⁺ couple remains far less established. The Tm³⁺, Yb³⁺ system offers an intense ³H₄ → ³H₆ electronic transition (800 nm) as a possible reference emission for UC thermometry in the NIR-I window. However, the Tm³⁺, Yb³⁺ thermometry system has not yet been fully understood, limiting its potential application in medical and biological contexts, as well as in nanoelectronics, nanophotonics and in general industrial settings. In this work, we demonstrate how to exploit the temperature-dependent multiphonon relaxation from the ³F₃ to the ³H₄ level of Tm³⁺. This relaxation is fed by energy transfer from Yb³⁺ and gives rise to two emission lines at 680 nm and 800 nm. Taking LiLuF₄:1% Tm, 30% Yb as a representative example, we analyzed both micro- and nanocrystalline samples to elucidate how surface-attached ligands with higher vibrational energies than the low cutoff phonon energies (∼500 cm^-1) of the fluoride matrix itself have on the Boltzmann thermometry behaviour. We show that Tm³⁺ can only work as a wide-range Boltzmann thermometer in microcrystalline, ligand-free samples with host compounds of sufficiently low cutoff phonon energies and that its action is limited in nanocrystalline systems. A combination of experimental studies and kinetic modelling helps us to elucidate clear-cut guidelines for optimizing the performance of the Tm³⁺, Yb³⁺ system as a luminescent thermometer and to compare this UC system to the well-established \"workhorse\" of the Er³⁺, Yb³⁺ UC couple.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" ","pages":""},"PeriodicalIF":5.1,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12516696/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145290368","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}

{"title":"Contributors to the Journal of Materials Chemistry C Emerging Investigators 2025 collection","authors":"None","doi":"10.1039/D5TC90150B","DOIUrl":"https://doi.org/10.1039/D5TC90150B","url":null,"abstract":"<p >Our 2025 Emerging Investigators themed collection gathers some of the best research being conducted by scientists in the early stages of their independent career. Each contributor was recommended as carrying out work with the potential to influence future directions in materials chemistry. Congratulations to all the researchers featured, we hope you enjoy reading this collection.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 40","pages":" 20326-20333"},"PeriodicalIF":5.1,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145315563","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}

{"title":"Synthesis and characterization of NFA-based polymers for solar cells with improved thermal stability.","authors":"Lucie Rivet, Antoine Curé, Camille Jutard, Samuel Fauvel, Renaud Demadrille, Antonio J Riquelme, Cyril Aumaître","doi":"10.1039/d5tc02570b","DOIUrl":"10.1039/d5tc02570b","url":null,"abstract":"<p><p>Among the latest advances in organic solar cells, all-polymer solar cells based on non-fullerene acceptors (NFAs) are emerging as a promising way to improve device stability. However, the synthesis of new electron-accepting polymers suitable for the active layer remains relatively unexplored. Current efforts primarily focus on maximizing photovoltaic conversion efficiency using PY-IT, a polymer derived from Y6. By contrast, there is a lack of fundamental research into controlling polymerization processes and the effect of the intrinsic optoelectronic properties of NFA-based polymers on their reactivity and stability when subjected to thermal stress and light soaking. To address this, we present the synthesis of a series of NFA-based polymers that incorporate thiophene, indacenodithiophene or a thienothiophene analogue. We systematically optimized Stille polymerisation by evaluating a range of phosphine ligands and correlating their performance with Tollman electronic and steric parameters, an approach that has rarely been explored in the literature. The resulting polymers exhibit improved macromolecular control, good solubility in <i>o</i>-xylene and optical properties suited to integration into the active layer of solar cells. Comprehensive spectroscopic and morphological characterisation (UV-vis, AFM and GIWAXS) of pristine polymer films confirms their amorphous nature in the solid state. The thermal and photochemical stability of the three new polymers was evaluated in devices under ISOS-D-2 (thermal ageing) and ISOS-L-1 (light soaking) protocols. After 1000 hours of thermal stress, all devices retained over 90% of their initial efficiency and they also demonstrated outstanding photostability over 300 hours under 1 Sun illumination. Some materials showed no degradation under these conditions, highlighting the potential of all-polymer solar cells to overcome long-standing stability challenges in organic photovoltaics.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" ","pages":""},"PeriodicalIF":5.1,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12461689/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145184321","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}

{"title":"Wireless technologies in stretchable bioelectronics","authors":"Miaoyun Feng, Guixuan Lu, Zihao Wang and Ying Jiang","doi":"10.1039/D5TC02191J","DOIUrl":"https://doi.org/10.1039/D5TC02191J","url":null,"abstract":"<p >Stretchable bioelectronic devices can intimately interface with the human body, but their potential is often constrained by the need for wired connections or rigid power sources. The integration of wireless power transfer and communication technologies addresses these limitations, enabling fully untethered and conformal operation of bioelectronics on skin, implanted inside the body, or even ingested. This article provides a comprehensive review of the wireless techniques applicable to stretchable bioelectronics and the unique considerations that arise at the intersection of these fields. We outline the principles of wireless power delivery – including inductive, capacitive, radio-frequency, ultrasonic, and optical methods – and wireless data communication strategies suitable for stretchable/deformable devices, such as RFID, NFC, Bluetooth/Wi-Fi/ZigBee and also optical/ultrasonic technologies. Key material selections and fabrication approaches for realizing stretchable circuits with wireless functionality are discussed, with an emphasis on recent advances in stretchable substrates, conductors, and system integration techniques. We then survey a range of application examples in wearable health monitoring, implantable medical devices, and ingestible sensors, highlighting how wireless capabilities enhance the performance and usability of stretchable systems. Finally, we consider the remaining challenges (such as ensuring long-term biointegration, device robustness, and safe energy operation) and present an outlook on future developments in this emerging multidisciplinary field.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 40","pages":" 20334-20366"},"PeriodicalIF":5.1,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145315564","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}

{"title":"Integrating environmental assessment into early-stage wearable electronics research","authors":"Filippa Wentz, Mohsen Mohammadi, Klas Tybrandt, Magnus Berggren, Rickard Arvidsson and Aiman Rahmanudin","doi":"10.1039/D5TC02280K","DOIUrl":"https://doi.org/10.1039/D5TC02280K","url":null,"abstract":"<p >This perspective explores the intersection between technology research and environmental assessment during the early-stage development of next-generation wearable electronics, encompassing flexible, stretchable, soft, transient, printed, and hybrid electronics. While significant advancements have been made in the development of high-performance materials, fabrication processes, and device engineering for wearables, their environmental performance is often overlooked. Even when environmental claims for new materials or processes are stated, they are often made without any quantifiable justification. This perspective critically analyses current approaches at assessing environmental performance during the early research stage and recommends how and when to integrate an environmental assessment to ensure both high device functionality and environmental performance. The timeliness of this perspective arises from the urgent need to address environmental concerns in the rapidly expanding wearable electronics research field and commercial use, which is projected to grow exponentially in the coming decade. Research in wearable electronics is multidisciplinary, involving material science, chemistry, physics, biology, electrical engineering, medicine and neuroscience. This perspective recommends timely integration of relevant environmental assessment efforts, including life cycle assessment, into this multidisciplinary mix, thereby ensuring that next-generation wearable electronics are aligned with sustainable development policies and regulatory systems.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 39","pages":" 19983-19999"},"PeriodicalIF":5.1,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/tc/d5tc02280k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145248105","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}

{"title":"Recent advances in highly efficient small-molecule TADF emitters for solution-processed OLEDs","authors":"Yongxia Ren and Shi-Jian Su","doi":"10.1039/D5TC02897C","DOIUrl":"https://doi.org/10.1039/D5TC02897C","url":null,"abstract":"<p >Solution-processable thermally activated delayed fluorescence (TADF) emitters have demonstrated strong competitiveness and significant development potential in display applications, due to their intrinsic merits of low cost, high efficiency, and compatibility with large-area fabrication. This comprehensive review highlights recent advancements in small-molecule solution-processable TADF emitters across the full-color spectrum, including near infrared, red, green, blue, and purple. It delves into their molecular design and electrical properties, with a particular focus on efficiency, color purity, and device stability. Ultimately, this review aims to provide valuable guidance for the development of high-efficiency, narrowband-emission, and stable solution-processed organic light-emitting diodes.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 39","pages":" 19909-19926"},"PeriodicalIF":5.1,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145248102","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}

{"title":"Correction: Emerging microelectronic microneedles (eMN) for biomedical applications","authors":"Shu Zhou, Qian Zhou, Xin Li and Bingbing Gao","doi":"10.1039/D5TC90145F","DOIUrl":"https://doi.org/10.1039/D5TC90145F","url":null,"abstract":"<p >Correction for ‘Emerging microelectronic microneedles (eMN) for biomedical applications’ by Shu Zhou <em>et al.</em>, <em>J. Mater. Chem. C</em>, 2024, <strong>12</strong>, 9868–9887, https://doi.org/10.1039/D4TC01576B.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 38","pages":" 19894-19894"},"PeriodicalIF":5.1,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/tc/d5tc90145f?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145196164","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}

{"title":"An honorary collection for Journal of Materials Chemistry C and Journal of Materials Chemistry B “in memory of Professor Dr Helmut Ringsdorf”","authors":"Dharmendra Pratap Singh, Ammathnadu Sudhakar Achalkumar, Matthias Lehmann and Sandeep Kumar","doi":"10.1039/D5TC90146D","DOIUrl":"https://doi.org/10.1039/D5TC90146D","url":null,"abstract":"<p >A graphical abstract is available for this content</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 38","pages":" 19506-19511"},"PeriodicalIF":5.1,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145196079","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}

{"title":"Recent advances in conjugated polymer lanthanide-doped upconversion nanoparticles and their biological applications","authors":"Guilherme de Freitas Silva, Fernando E. Maturi, Luis D. Carlos and Jefferson L. Ferrari","doi":"10.1039/D5TC02723C","DOIUrl":"https://doi.org/10.1039/D5TC02723C","url":null,"abstract":"<p >This review article provides a comprehensive overview of the synthesis, functionalization, and biomedical applications of lanthanide-doped upconversion nanoparticles (LN-UCNPs) modified with polymers. UCNPs, which exhibit anti-Stokes luminescence, have gained significant attention due to their unique optical properties, including high photostability, deep tissue penetration, and low autofluorescence. These characteristics make them ideal candidates for applications in bioimaging, photodynamic therapy (PDT), photothermal therapy (PTT), and drug delivery systems. However, the inherent hydrophobicity and potential toxicity of UCNPs require surface modifications to enhance their biocompatibility and functionality. This review initially discusses the fundamental mechanisms of upconversion luminescence (UCL), the importance of lanthanide doping in improving the optical performance of UCNPs, and the most common methodologies for synthesis, highlighting their advantages and limitations. This analysis examines how polymer coatings can improve the colloidal stability, biocompatibility, and functional versatility of UCNPs, and provides an overview of recent studies that have employed this combination. Different strategies for polymer modification, such as ligand exchange, encapsulation, and layer-by-layer (LbL) assembly, are explored in detail. In the context of biomedical applications, recent studies on the use of polymer-modified UCNPs in bioimaging are discussed and the integration with photosensitizers and photothermal agents for their roles in PDT and PTT that offer targeted cancer therapies with potentially reduced side effects are examined. The evaluation also covers the development of UCNP-based drug delivery systems, where polymers facilitate controlled and stimuli-responsive release of therapeutic agents, enhancing treatment efficacy. Despite the advances in the area, challenges such as tissue overheating during NIR irradiation and the lack of standardized protocols for cytotoxicity assessment remain.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 40","pages":" 20424-20443"},"PeriodicalIF":5.1,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145315567","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}