Journal of Materials Chemistry C最新文献

{"title":"Biomaterials for flexible pressure sensors: innovations and advancements","authors":"Pinwen Wang, Zhipeng Hou, Siwen Chen, Sihang Ren, Muxin Zhao and Liqun Yang","doi":"10.1039/D4TC03256J","DOIUrl":"https://doi.org/10.1039/D4TC03256J","url":null,"abstract":"<p >The burgeoning market for flexible pressure sensors has been invigorated by their enhanced performance and wearability, paving the way for innovative applications in wearable electronics and biomedical devices. In this domain, biomaterials have risen as a cornerstone, offering a unique blend of biological richness, biocompatibility, degradability, and eco-friendliness. This review introduces the pivotal role of biomaterials in the advancement of flexible pressure sensors over the past five years. It expounds on the various methods of integrating biomaterials into sensors, discussing the corresponding biological properties that underpin their functionality. Furthermore, the review covers various biomimetic structures designed to optimize sensor performance, enhancing their sensitivity, stability, and durability. Adopting a comprehensive perspective, this paper provides valuable insights and potential solutions to the challenges and limitations currently faced in sensor research. Through a detailed analysis of empirical evidence, we aim to guide and motivate future technological and scientific advancements in this rapidly evolving field.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 45","pages":" 18138-18166"},"PeriodicalIF":5.7,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142679456","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":"Tuning the performance of PSCs using rare-earth elements","authors":"Sajid Sajid, Salem Alzahmi, Nouar Tabet, Mohammad Y. Al-Haik, Mahmoud Abdel-Hafiez, Yousef Haik and Ihab M. Obaidat","doi":"10.1039/D4TC03798G","DOIUrl":"https://doi.org/10.1039/D4TC03798G","url":null,"abstract":"<p >Perovskite solar cells (PSCs) are emerging and promising alternatives to the market-leading solar cells due to their high performance, low fabrication cost, and versatile material modification. There are still opportunities to enhance the performance of PSCs, such as regulating mismatched absorption and limiting degradation brought about by some parts of light. Rare-earth elements (REEs) have the potential to be useful in this context. Due to their diverse energetic transition orbitals, REEs can transform ultraviolet (UV) and infrared (IR) light into visible light, which helps to improve the photostability of PSCs in addition to allowing more light absorption. Furthermore, their reversible redox potential can help prevent degradation caused by the redox reaction of other functional materials used in PSCs. As interface modifiers, REEs have the ability to induce the formation of a donor–acceptor complex, which can overcome the interface barrier and enable high charge-carrier collecting ability. In this regard, we will scrutinize PSCs that utilize REEs as electron transporting materials, hole transporting materials, additives in perovskites, and interface modifiers. We also offer the possible future research directions and limitations of using REEs in PSCs for high stability and increased efficiency.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 46","pages":" 18575-18590"},"PeriodicalIF":5.7,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142736739","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":"A pectin-based artificial nociceptor enabling actual tactile perception†","authors":"Linqing Zhou, Junqing Wei, Zewen Li, Kuibo Lan, Guoxuan Qin, Fang Wang and Kailiang Zhang","doi":"10.1039/D4TC03877K","DOIUrl":"https://doi.org/10.1039/D4TC03877K","url":null,"abstract":"<p >Developing green and biodegradable electronic devices with nociceptor functions is a crucial step in transmitting external stimuli to the internal neural system. A biopolymer is a good choice for a natural nociceptor because of its simple preparation process, low cost, high biocompatibility, and abundant sources. This paper reports a flexible memristor based on a polysaccharide–pectin polymer and the tactile perception function is verified by integrating this device into a tactile sensing system. The bionic tactile sensing system also exhibits a fast and obvious response toward different levels of pressure like a biological organism. Meanwhile, the results imply that the flexible Ag/pectin/ITO memristor has an obvious threshold-switching behavior according to voltage stimulation and other characteristics; <em>e.g.</em>, sensitization, relaxation, and non-adaptation are achieved, which provide great potential as an artificial nociceptor of this device. Additionally, the flexible Ag/pectin/ITO/PET device shows robust performance (validating all the key characteristics as a nociceptor) after bending, suggesting high stability and good flexibility.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 48","pages":" 19586-19594"},"PeriodicalIF":5.7,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142810226","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":"Has the perovskite LED stability problem been solved?†","authors":"Muhammad Umair Ali, Atta Ur Rehman and Aleksandra B. Djurišić","doi":"10.1039/D4TC02975E","DOIUrl":"https://doi.org/10.1039/D4TC02975E","url":null,"abstract":"<p >Significant progress in the stability of metal halide perovskite light emitting diodes (LEDs) has been made in recent years, with impressive increases in record lifetimes. However, a large number of published papers still report half lifetimes, <em>T</em><small>₅₀</small>, which are significantly shorter compared to reported records. In this perspective, we discuss the stability achievements for different emission ranges and the remaining challenges. Blue LEDs generally exhibit much faster performance degradation compared to other colours, while for near-infrared and green LEDs record half-lifetimes exceeding 30 000 h have been reported. To identify promising approaches towards higher stability devices, we focus on green LEDs and discuss mechanisms of degradation and factors affecting the device stability, focusing on the electrochemical processes and ion migration, and how these processes are affected by the perovskite composition and device architecture.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 46","pages":" 18628-18638"},"PeriodicalIF":5.7,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142736742","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":"Highly sensitive OFET based room temperature operated gas sensors using a thieno[3,2-b]thiophene extended phthalocyanine semiconductor†","authors":"Recep Isci, Ozgur Yavuz, Sheida Faraji, Dilara Gunturkun, Mehmet Eroglu, Leszek A. Majewski, Ismail Yilmaz and Turan Ozturk","doi":"10.1039/D4TC03208J","DOIUrl":"https://doi.org/10.1039/D4TC03208J","url":null,"abstract":"<p >Over the past decades, organic field-effect transistor (OFET) gas sensors have maintained a rapid development. However, the majority of OFET gas sensors show insufficient detection capability towards oxidizing and hazardous gases such as nitrogen dioxide (NO<small>₂</small>) and sulfide dioxide (SO<small>₂</small>). In this report, a sustainable approach toward the fabrication of OFET gas sensors, consisting of a thieno[3,2-<em>b</em>]thiophene (TT) and phthalocyanine (Pc) based electron rich structure (<strong>TT-Pc</strong>) for the detection of both nitrogen dioxide (NO<small>₂</small>) and sulfide dioxide (SO<small>₂</small>) is disclosed for the first time. Khaya gum (KG), a natural, biodegradable biopolymer is used as the gate dielectric in these OFET-based sensors. Thin film properties and surface morphology of <strong>TT-Pc</strong> were investigated by UV-Vis, SEM, AFM and contact angle measurements, which indicated a uniform and smooth film formation. The UV-Vis properties were supported by computational chemistry, performed using density functional theory (DFT) for optimizing geometry and absorption of <strong>TT-Pc</strong> models. Sensitive and selective responses of 90% and 60% were obtained from <strong>TT-Pc</strong> OFET-based sensors upon exposure to 20 ppm of NO<small>₂</small> and SO<small>₂</small>, respectively, under ambient conditions. One of the lowest limits of detection of ∼165 ppb was achieved for both NO<small>₂</small> and SO<small>₂</small> using a solution-processed <strong>TT-Pc</strong> sensor with a natural, biodegradable dielectric biopolymer. The sensors showed excellent long-term environmental and operational stability with only a 7% reduction of the sensor's initial response (%) upon exposure to NO<small>₂</small> and SO<small>₂</small> over nine months of operation in air.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 1","pages":" 472-483"},"PeriodicalIF":5.7,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859390","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":"Enhancing near-infrared II photothermal conversion through anchoring numerous nanospheres to the edge of a gold nanosheet†","authors":"Yajie Kong, Qi He, Heng Zhang, Haoyu Sun, Yi Wang, Xiaohu Wu, Yanyun Ma and Yiqun Zheng","doi":"10.1039/D4TC03835E","DOIUrl":"https://doi.org/10.1039/D4TC03835E","url":null,"abstract":"<p >Anisotropic noble metal nanostructures have shown remarkable structural benefits in near-Infrared (NIR) light absorption and high efficiency in photothermal conversion. In this study, we employ the seed growth strategy to create two-dimensional gold (Au) in-plane hybrid nanostructures, specifically designed with numerous quasi-spherical particles adorning the edge of a single plate, showcasing promising use in NIR-II photothermal conversion. The key to our successful synthesis lies in the doping of plate-like Au seeds with elemental selenium (Se), which plays a crucial role in restricting the island-like deposition of Au nanoparticles predominantly to the edge regions. With this unique hybrid structure, we observed a notable red-shift in the absorption peak towards longer wavelengths, ensuring full coverage of the NIR-II regions. A photothermal conversion efficiency of 42% was achieved, as evaluated using a water suspension under a 1064 nm laser at a power density of 1.0 W cm<small>⁻²</small>. Furthermore, our investigation into photothermal stability revealed excellent durability even after multiple heating and cooling cycles. Finite-difference time-domain (FDTD) simulations confirm that polarization of surface charges along the edge region is achieved by constructing such a “plate@ sphere” in-plane hybrid structure, thereby affirming successful hot spot engineering. This research demonstrates the potential to manipulate the growth mode of two-dimensional Au nanostructures through non-metal doping during seeded growth and validates the use of in-plane hybrid two-dimensional nanostructures for photothermal conversion, providing insights for the rational design of high-performance NIR-II photothermal nanomaterials tailored for biomedical applications.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 48","pages":" 19515-19525"},"PeriodicalIF":5.7,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142810233","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":"Enhancing the NO2 detection ability of surface acoustic wave sensors with ZnO-decorated N-doped porous carbon nanosheets†","authors":"Xue Li, Yuan Feng, Haifeng Lv, Junjie Shi, Yuanjun Guo, Sean Li and Xiaotao Zu","doi":"10.1039/D4TC03690E","DOIUrl":"https://doi.org/10.1039/D4TC03690E","url":null,"abstract":"<p >Effective detection of nitrogen dioxide (NO<small>₂</small>) is crucial for environmental safety and human health. Gas sensors utilizing surface acoustic wave (SAW) technology hold significant promise for detecting hazardous gases, but their performance heavily depends on the intrinsic properties of the sensing layer materials. In this study, we elaborate on using ZnO nanoparticle-dispersed N-doped porous carbon nanosheets (ZnO@N-PCNs) for SAW sensors aimed at achieving rapid NO<small>₂</small> detection at room temperature. The resultant ZnO@N-PCNs SAW gas sensor exhibits a significant frequency shift of approximately −4.4 kHz, which is much higher than that of the pristine N-PCNs SAW sensor at a NO<small>₂</small> concentration of 20 ppm. It responds quickly when exposed to NO<small>₂</small> gas, and demonstrates specific selectivity and good reproducibility over both short and long terms. This work reveals the sensing properties of ZnO-optimized SAW sensors and provides valuable guidance for the development of high-sensitivity SAW sensors.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 1","pages":" 365-372"},"PeriodicalIF":5.7,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859353","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":"High stability of robust anti-thermal-quenching lead-free double perovskite crystals for optoelectronic devices and high-performance fibers†","authors":"Xiaoman Zhang, Yehua Zheng, Kun Nie, Xiaodong Zhang, Xiuqiang Duan, Ziyao Hu, Ming Yang, Lefu Mei, Luoxin Wang, Hua Wang, Mingquan Li and Xiaoxue Ma","doi":"10.1039/D4TC03773A","DOIUrl":"https://doi.org/10.1039/D4TC03773A","url":null,"abstract":"<p >Lead-free double perovskites are environmentally friendly, and their good photoelectric efficiency has received widespread attention. However, the stability and efficiency of lead-free perovskites need to be further improved to meet the growing application needs. In this study, thermally quenched perovskite (Cs<small>₂</small>NaHoCl<small>₆</small>) crystals (PCs) were successfully synthesized by co-precipitation. By doping with Sb<small>³⁺</small>, the excitation wavelength of the original perovskite increased significantly to 250–360 nm, and the emission wavelength of the original perovskite also increased significantly to 660 nm. Cs<small>₂</small>NaHoCl<small>₆</small>:Sb<small>³⁺</small> PCs are made of red and white light-emitting diodes (LEDs) for general lighting applications. In addition, Cs<small>₂</small>NaHoCl<small>₆</small>:Sb<small>³⁺</small> PCs are made into flexible luminescent fibers with aramid/polyphenylene sulfide (ACFs/PPS) composite fibers. Based on the good thermal quenching resistance of Cs<small>₂</small>NaHoCl<small>₆</small>:Sb<small>³⁺</small> PCs, the flexible luminescent fibers showed excellent high-temperature luminescence stability. At 125 °C, flexible luminescent fibers retained 99.8% of the original luminescence intensity; at 250 °C, they retained 75.6% of the original. These flexible luminescent fibers have the potential to be used in fluorescence detection in high-temperature environments. In summary, this study used a simple method to prepare lead-free perovskites with good optical properties and stability, expanding the application of perovskites in the field of fibers.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 1","pages":" 456-464"},"PeriodicalIF":5.7,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859387","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":"A strain-sensitive neuromorphic device emulating mechanoreception for different skin sensitivities†","authors":"Shubhanshi Mishra, Bhupesh Yadav and Giridhar U. Kulkarni","doi":"10.1039/D4TC03607G","DOIUrl":"https://doi.org/10.1039/D4TC03607G","url":null,"abstract":"<p >Emulating the somatosensory cognitive ability of the human body with neuromorphic devices is an upcoming activity. Among multiple domains, tactile sensors or mechanoreceptors have particularly captivated a lot of interest due to their potential to detect and measure physical interaction. While there have been reports on using strain sensors coupled with neuromorphic devices to perform such actions, sensors with a built-in ability to sense are yet to be demonstrated. Here, we report a study on the fabrication of a neuromorphic device that makes use of the inherent strain-sensing mechanism coupled with neuromorphic functions. This was accomplished using an interconnected network of gold microwires embedded in polydimethylsiloxane (PDMS), which exhibited sensitivity to the applied strain. The device demonstrated an inherent change in resistance when mechanical strain was applied. The relaxation after strain removal was carefully monitored and found to follow the Ebbinghaus forgetting curve. Various neuromorphic functionalities like short-term plasticity (STP), long-term plasticity (LTP), spike rate-dependent plasticity (SRDP), spike amplitude-dependent plasticity (SADP), potentiation, and depression have been demonstrated. The device showcased remarkable performance with high linearity (non-linearity factor as 0.29 for potentiation and −0.09 for depression) and paired-pulse facilitation (PPF) levels (232%) approaching those found in biological systems. Furthermore, by strategically modulating the Young's modulus of the PDMS, the mechanoreception was extended to real skin-like conditions with varying sensitivities, such as that found in tongue and lip areas in contrast to the hard sole. Our observations on the impact of this modulation on device performance provide unprecedented insights, marking a pioneering advancement in artificial sensory systems.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 45","pages":" 18243-18255"},"PeriodicalIF":5.7,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142679462","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":"The isovalent alloying assisted anomalous valley Hall effect in a hexagonal antiferromagnetic monolayer†","authors":"Liguo Zhang, San-Dong Guo, Xiao-Shu Guo and Gangqiang Zhu","doi":"10.1039/D4TC03700F","DOIUrl":"https://doi.org/10.1039/D4TC03700F","url":null,"abstract":"<p >Exploring the combination of antiferromagnetic (AFM) spintronics and the anomalous valley Hall effect (AVHE) is one of the most important aspects for developing valleytronic applications. The key to address this issue is to achieve spin splitting around the valleys in AFM systems. Here, we propose a possible way for achieving the AVHE in a hexagonal AFM monolayer, which involves the isovalent alloying. This can break the combined symmetry (<em>PT</em> symmetry) of spatial inversion (<em>P</em>) and time reversal (<em>T</em>), giving rise to spin splitting. More specifically, the large spin splitting around the Fermi energy level is attributed to d orbital mismatch among the different transition metal ions. Based on first-principles calculations, the proposed way can be verified in an out-of-plane AFM CrMoC<small>₂</small>S<small>₆</small> monolayer, which possesses spontaneous valley polarization and spitting, providing possibility to realize the AVHE. It is also proved that tensile strain can strengthen the valley splitting and maintain the out-of-plane AFM ordering. Our work provides an experimentally feasible way for developing AFM valleytronic devices.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 1","pages":" 465-471"},"PeriodicalIF":5.7,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859388","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}