Journal of Materials Chemistry C最新文献

{"title":"Rare-earth doped upconversion-photopolymerization hydrogel hybrids for in vivo wound healing†","authors":"Ximei An, Ling Gao, Jingrui Guo, Fan Meng, Huiwang Lian, Shaoan Zhang, Janak L. Pathak, Yang Li and Shizhen Zhang","doi":"10.1039/D4TC04309J","DOIUrl":"https://doi.org/10.1039/D4TC04309J","url":null,"abstract":"<p > <em>In vivo</em> wound healing stands as a transformative paradigm in the field of tissue repair and regeneration, yet still suffers from a pivotal limitation of inferior penetration depth along with the thermal tissue damage side-effect of photopolymerization hydrogels under conditions of suboptimal light and power. Herein, we propose an upconversion-photopolymerization-driven strategy and synthesize injectable NaYF<small>₄</small>:Yb<small>³⁺</small>,Tm<small>³⁺</small>@NaYF<small>₄</small>:Nd<small>³⁺</small>,Yb<small>³⁺</small> + GelMa (UC-YT@NY + GelMa) hydrogel hybrids to respond to <em>in vivo</em> wound healing. The use of a near-infrared laser with a wavelength of 808 nm, a power density of 1.27 W cm<small>⁻²</small> and an irradiation time of 8 minutes resulted in a hydrogel photopolymerization efficiency of up to 96.3%. A comparison with the use of a 980 nm laser under the same conditions shows that our process not only has excellent photopolymerization performance, but also significantly reduces the photothermal effect. Our biocompatible hydrogel hybrids facilitate deep-penetration wound healing at a depth of 3 mm in a mouse model and achieve complete healing in 7 days. This novel interventional therapy provides precise spatiotemporal control over therapeutic agent release, offering high-quality deep-tissue wound healing.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 4","pages":" 1999-2009"},"PeriodicalIF":5.7,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107529","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":"Centimeter-level double perovskite single crystals with strong interlaminar hydrogen bonds for high-performance X-ray detection†","authors":"Linjie Wei, Yi Liu, Yu Ma, Qingshun Fan, Liwei Tang, Jingtian Zhang, Junhua Luo and Zhihua Sun","doi":"10.1039/D4TC04488F","DOIUrl":"https://doi.org/10.1039/D4TC04488F","url":null,"abstract":"<p >Ruddlesden–Popper (RP) hybrid perovskites hold great potential for X-ray detection, while the inherent van der Waals gap hinders the preparation of large single crystals. Therefore, reducing the interlaminar energy gap in 2D RP-type perovskites is crucial for exploiting high-performance crystal-based X-ray detectors. We here present a new 2D RP-type double perovskite, (<em>t</em>-ACH)<small>₄</small>AgBiI<small>₈</small>·H<small>₂</small>O (<strong>1</strong>, <em>t</em>-ACH = 4-aminomethyl-1-cyclohexane carboxylate), of which the intercalated carboxylate spacers form strong interlaminar O–H⋯O hydrogen bonds and favor the elimination of the van der Waals energy gap. This enhanced interlaminar connection in its quasi-2D motif facilitates the growth of large single crystals. As expected, bulk high-quality single crystals of <strong>1</strong> with a centimeter size up to 17 × 12 × 8 mm<small>³</small> were facilely obtained, which exhibit notable semiconductor properties of low trap density (∼6.57 × 10<small>¹⁰</small> cm<small>⁻³</small>) and large mobility-lifetime (∼0.77 × 10<small>⁻³</small> cm<small>²</small> V<small>⁻¹</small>) in the direction vertical to the (−100) plane. Particularly, the single crystal-based detector of <strong>1</strong> shows prominent performance in X-ray detection, including a low dark current drift of 1.97 × 10<small>⁻⁷</small> nA cm<small>⁻¹</small> s<small>⁻¹</small> V<small>⁻¹</small>, a high sensitivity of 3221.6 μC Gy<small>_air</small><small>⁻¹</small> cm<small>⁻²</small>, and a low detection limit of 12 nGy<small>_air</small> s<small>⁻¹</small>. The figure-of-merit of detection sensitivity is approximately 180 times than the commercial a-Se X-ray detectors. This intercalation of strong O–H⋯O hydrogen bonds reduces the van der Waals gap in 2D RP-type perovskites, which serves as an effective strategy to explore new eco-friendly perovskites for high-performance photoelectric applications.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 4","pages":" 1675-1679"},"PeriodicalIF":5.7,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107609","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":"Strain-tuning of perpendicular magnetic anisotropy and valley topological phase transition in the SVNH monolayer†","authors":"Xiang-Jie Chen, Zhen Gao, Yong-Hu Xu, Meng-Ran Qin, Yao He and Kai Xiong","doi":"10.1039/D4TC03757J","DOIUrl":"https://doi.org/10.1039/D4TC03757J","url":null,"abstract":"<p >As a novel dimension in the realm of scientific inquiry, the exploration, manipulation, and effective utilization of the valley have garnered significant attention. In this research, we utilize first-principles calculations to anticipate a novel Janus monolayer, SVNH, which demonstrates good stability at room temperature. Additionally, we delve into the influence of biaxial strain on both the valley characteristics and magnetic behaviors of the material. This research indicates that the magnetic anisotropy of SVNH is primarily induced by the coupling between the d<small>_<em>xy</em></small> and d<small>_{<em>x</em><small>²</small>–<em>y</em><small>²</small>}</small> orbitals of the V atoms. As the biaxial strain intensifies, the magnetic easy axis undergoes a transition from an in-plane (IP) to an out-of-plane (OP) orientation. Additionally, with further enhancement of the strain, the sequential closing of the −K valley and the K valley leads to the occurrence of topological phase transitions, which are related to the orbital inversions between d<small>_<em>xy</em></small> + d<small>_{<em>x</em><small>²</small>–<em>y</em><small>²</small>}</small> and d<small>_{<em>z</em><small>²</small>}</small> orbitals. Our research has enriched the two-dimensional ferrovalley (FV) family, holding significant implications for the design and application of valley-dependent materials.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 4","pages":" 1945-1953"},"PeriodicalIF":5.7,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107521","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":"Polymorphism in mechanochromic luminogens: recent advances and perspectives","authors":"Ramakant Gavale, Faizal Khan and Rajneesh Misra","doi":"10.1039/D4TC03815K","DOIUrl":"https://doi.org/10.1039/D4TC03815K","url":null,"abstract":"<p >Polymorphism in mechanochromic materials is a subject of growing research interest due to its implication in various optoelectronic devices. Polymorphs refer to materials or substances that, despite having identical chemical compositions, exhibit different crystal structures, leading to variations in emission colors. The occurrence of polymorphism in a compound is often a result of various factors, such as temperature, pressure as well as the solvents used in the recrystallization methods and such polymorphs might respond differently to external mechanical stimuli. This review focuses on the development of polymorphic mechanochromic luminogens and their emission in response to a mechanical stimulus along with their polymorphs; moreover it highlights the importance of intermolecular interactions and packing modes in regulating mechanofluorochromic performance. The review aims to reveal the mechanisms behind polymorphism, exploring how intermolecular interactions, crystal packing, and molecular conformation contribute to the generation of different emission colors. The present review provides an elucidative assessment of recently developed organic mechanochromic polymorphic materials, focusing on the factors influencing their formation and properties.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 3","pages":" 1063-1129"},"PeriodicalIF":5.7,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142994002","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":"Accessing mixed cluster rare-earth MOFs with reduced connectivity via linker expansion and desymmetrization: co-assembly of 6-c and 10-c hexanuclear clusters in RE-stc-MOF-1†","authors":"Edward Loukopoulos, Constantinos Tsangarakis, Konstantinos G. Froudas, Maria Vassaki, Giasemi K. Angeli and Pantelis N. Trikalitis","doi":"10.1039/D4TC03317E","DOIUrl":"https://doi.org/10.1039/D4TC03317E","url":null,"abstract":"<p >MOFs based on hexanuclear rare-earth (RE) clusters with reduced connectivity (&lt;12) are rare. The co-assembly of RE clusters with distinct reduced connectivity provides access to novel structures. We report a new family of MOFs denoted as RE-<strong>stc</strong>-MOF-1, displaying a unique (3,3,3,3,6,10)-connected network, based on 6-c and 10-c RE hexanuclear clusters.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 1","pages":" 31-36"},"PeriodicalIF":5.7,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/tc/d4tc03317e?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859407","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":"“This or that” – light emission from hybrid organic–inorganic vs. coordination Cu(i) halides","authors":"Dilruba A. Popy and Bayram Saparov","doi":"10.1039/D4TC04153D","DOIUrl":"https://doi.org/10.1039/D4TC04153D","url":null,"abstract":"<p >In recent years, multiple new families of ultra-high efficiency light emitting Cu(<small>I</small>) halides have been developed for various optical applications. Among the light emitting Cu(<small>I</small>) halides, two distinct materials classes can be recognized, hybrid organic–inorganic Cu(<small>I</small>) halides featuring structurally separated organic cations and Cu(<small>I</small>) halide anions, and coordination Cu(<small>I</small>) halides containing organic ligands attached to Cu(<small>I</small>) centers. These two materials classes have been developed in parallel, and each research field has its own set of terminologies, which has caused confusion regarding similarities and differences between them. In this review, syntheses, crystal and electronic structures, optical properties, and photoemission mechanisms of these two distinct materials classes are compared. This work is concluded with a brief review of exciting potential practical applications of both hybrid organic–inorganic and coordination Cu(<small>I</small>) halides.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 2","pages":" 521-560"},"PeriodicalIF":5.7,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142918093","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":"Investigating the effect of hydrothermal carbonisation reaction times on the photoluminescence of bio-oil-derived carbon polymer dots†","authors":"Lawrence A. Bruce, Liam Desmond, Abigail A. Seddon, Leon Bowen, Greg A. Mutch, Anh N. Phan and Elizabeth A. Gibson","doi":"10.1039/D4TC03858D","DOIUrl":"https://doi.org/10.1039/D4TC03858D","url":null,"abstract":"<p >Carbon dots (CDs) have favourable properties such as broad spectral absorption, strong photoluminescence, low toxicity, and high specific surface area. Here, carbon polymer dots (CPDs), which are CDs with a carbon core and polymeric surface, were synthesised from chitin-derived bio-oil, supporting the transition away from fossil- based feedstocks in carbon nanomaterial synthesis. The influence of hydrothermal carbonisation (HTC) reaction times on the structural, morphological, and optical properties were studied. Structural analysis revealed the formation of nitrogen-doped CPDs with a cross-linked polymeric shell surrounding a crystalline graphitic carbon core, with the size, structure, and surface composition all influenced by HTC reaction time. All CPD samples showed the same excitation dependent emission, with a <em>λ</em><small>_max</small> of 394 nm. Deconvolution of the photoluminescence showed multiple components with contributions identified from both molecular luminophores and the carbon core. Overall, this work investigates the mechanism of photoluminescence in CPDs, providing insights that could promote application in areas such as bioimaging, sensing, and optoelectronics.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 5","pages":" 2172-2182"},"PeriodicalIF":5.7,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/tc/d4tc03858d?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107486","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":"The effect of positional deuterium substitution on the acceptor moiety for TADF†","authors":"Da Yeon Shin, Jun Sung Lee, Jeong-Yeol Yoo, Jong-Kwan Bin and Chil Won Lee","doi":"10.1039/D4TC04067H","DOIUrl":"https://doi.org/10.1039/D4TC04067H","url":null,"abstract":"<p >Despite the successful commercialization of organic light-emitting diodes (OLEDs), achieving high efficiency and long lifespan in blue OLEDs often requires device structures that incorporate multiple layers featuring two or more blue-emitting layers, highlighting the ongoing challenge of achieving deep-blue OLEDs with extended lifetime. Significant improvements in lifetime have been demonstrated in blue thermally activated delayed fluorescent (TADF) OLEDs by utilizing 5CzBN with positional deuteration. We synthesized three emitters and observed a gradual increase in T<small>₆₀</small> based on the positioning of benzonitrile as the acceptor, generally reflecting the molecular design of TADF systems such as the donor–π–acceptor configuration. To investigate the effects of deuteration, we measured the decrease in photoluminescence (PL) efficiency following UV irradiation to induce photodegradation. Additionally, we fabricated devices to confirm stability during operation. The photoluminescence (PL) efficiency and lifetime depend on the positional deuteration of the acceptor core. The 5CzBN-D(<em>o</em>,<em>p</em>) emitter, which is deutero-substituted, exhibited greater efficiency and a longer lifespan than 5CzBN-D(<em>m</em>). After 60 minutes of UV exposure, the decrease in PL for 5CzBN-D(<em>o</em>,<em>p</em>) was 53.4%, whereas for 5CzBN-D(<em>m</em>) it was 68%. Furthermore, the lifetime (LT<small>₆₀</small>) of 5CzBN-D(<em>o</em>,<em>p</em>) was 4.61 times longer than that of 5CzBN-D(<em>m</em>). These results indicate that the efficiency and lifetime in donor–π–acceptor chemical structures depend significantly on the position of the core with a strongly electron-withdrawing group.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 5","pages":" 2367-2377"},"PeriodicalIF":5.7,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107650","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 mesogenic unit based low melting point solid additive for efficient and stable organic solar cells†","authors":"Jiali Wang, Qian Xie, Jie Fang, Dongdong Xia, Yuefeng Zhang, Chunyu Qiao, Yu Xie, Shengyong You, Lang Jiang, Weiwei Li and Chaowei Zhao","doi":"10.1039/D4TC04357J","DOIUrl":"https://doi.org/10.1039/D4TC04357J","url":null,"abstract":"<p >Inspired by the multi roles of liquid crystal molecules, which exhibit both crystalline and liquid characteristics, we report a new solid additive, CB8-Br, by combining a biphenyl mesogenic unit and a bromine alkyl chain. The melting temperature of CB8-Br is 80.1 °C, matching well with the annealing temperature of most active layer systems in organic solar cells (OSCs). Therefore, CB8-Br can display not only a liquid state during the active layer annealing process, but also a solid state during the device operation. Moreover, the unique design enables CB8-Br to effectively optimize the morphology of the active layer while avoiding the drawbacks of liquid additives, such as the poor reproducibility and device stability issues. Upon introducing CB8-Br, the absorption spectrum of the active layer exhibited a significant redshift, which is beneficial for more light harvesting and increasing the short-circuit current density of the devices. Additionally, higher and more balanced charge carrier mobilities, along with suppressed carrier recombination, were observed in OSCs optimized with CB8-Br. As a result, the devices by using CB8-Br achieved a superior power conversion efficiency of 18.12%, significantly higher than 16.59% of the control devices without additive. Furthermore, the stability of OSCs was also probed and the CB8-Br based devices could demonstrate higher durability.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 5","pages":" 2183-2189"},"PeriodicalIF":5.7,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107459","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":"Self-healing epoxidized natural rubber flexible sensors based on hydrogen bonding interactions†","authors":"Wanying Hu, Caiyan Wang, Fan Fei, Runhua Wang, Jincheng Wang, Hao Tian, Yiyao Zhu and Hua Zhang","doi":"10.1039/D4TC03214D","DOIUrl":"https://doi.org/10.1039/D4TC03214D","url":null,"abstract":"<p >Flexible strain sensors find extensive applications in the domains of human health monitoring and human–computer interactions. At present, the exploration and development of a novel generation of flexible sensors exhibiting excellent sensitivity, high sensing performance, and sustainability have emerged as a crucial scientific and technological research endeavor. In this study, epoxidized natural rubber (ENR) with enhanced mechanical tensile and self-healing properties was fabricated by using ENR as the matrix and introducing reversible hydrogen bonding through modified nanofillers. The modified ENR exhibited good tensile strength (1.27 MPa) and elongation at break (1028%), and the self-healing efficiency reached 80% within 12 h at 45 °C. By incorporating nano carbon powder and multi-walled carbon nanotubes as a conductive interlayer, the composite exhibited good electrical conductivity, enabling it to provide a low detection limit, a wide sensing range, fast response time, and the cyclic tensile testing can be repeated 800 times. Consequently, the sensor can monitor subtle human movements and recognize different vocalizations and joint motions, suggesting potential applications in healthcare devices, flexible electronics, and human–machine interfaces.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 4","pages":" 1824-1834"},"PeriodicalIF":5.7,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107537","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}