Materials Chemistry Frontiers最新文献

{"title":"Piezoelectric polymers and their applications in antimicrobial fields","authors":"Xiuqing Wang, Shujun Zhang, Yushan Hu, Wen Zhou and Xiaojing Huang","doi":"10.1039/D4QM00930D","DOIUrl":"https://doi.org/10.1039/D4QM00930D","url":null,"abstract":"<p >Bacterial resistance poses a significant threat to human beings, highlighting the crucial need to explore new antimicrobial strategies. Piezoelectric polymers, as innovative macromolecules, can exhibit antimicrobial effects through the generation of electric fields when triggered by mechanical energy. Recent research studies have highlighted piezoelectric polymers as promising antimicrobial strategies due to their unique piezoelectric characteristics, lower susceptibility to bacterial resistance, and superior biocompatibility. These polymers exert antimicrobial effects in response to external mechanical stimuli, offering the advantages of precise treatment and remote control, showing application potential in various areas, such as healthcare, textile manufacturing, food packaging, and environmental protection. This review summarizes the antimicrobial effects, mechanisms, biocompatibility, and applications of piezoelectric polymers in the antimicrobial fields, aiming to provide a theoretical basis and practical guidance for their further in-depth explorations and innovative applications.</p>","PeriodicalId":86,"journal":{"name":"Materials Chemistry Frontiers","volume":" 5","pages":" 754-771"},"PeriodicalIF":6.0,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143480862","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":"Advances in organic room-temperature phosphorescence: design strategies, photophysical mechanisms, and emerging applications","authors":"Yujie Yang, Qianqian Li and Zhen Li","doi":"10.1039/D4QM01032A","DOIUrl":"https://doi.org/10.1039/D4QM01032A","url":null,"abstract":"<p >Organic room temperature phosphorescent (RTP) materials have garnered significant interest due to their potential applications in anticounterfeiting, biological imaging, and optoelectronic devices. This Chemistry Frontiers paper comprehensively analyzes the photophysical processes underlying phosphorescence to identify the key factors that facilitate phosphorescence emission. It critically evaluates the intrinsic mechanisms of various construction strategies and explores the relationship between aggregated structures and their properties. Detailed discussions on molecular arrangement, packing modes, and intra/intermolecular interactions are presented, offering systematic design principles. Finally, it outlines the current application areas of organic RTP materials, forecasts future advancements, and proposes performance criteria and strategic design approaches to guide further progress in this field.</p>","PeriodicalId":86,"journal":{"name":"Materials Chemistry Frontiers","volume":" 5","pages":" 744-753"},"PeriodicalIF":6.0,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143480861","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":"Micromotors toward biomedicine: efforts to achieve precise drug delivery","authors":"Gang Chen, Wanci Chang, Mengqing Qiu, Baiqiang Zhang, Fangfang Zhang, Guopei Li and Yanqiu Xiao","doi":"10.1039/D4QM00847B","DOIUrl":"https://doi.org/10.1039/D4QM00847B","url":null,"abstract":"<p >Micromotors, characterized by their minute size, remarkable motility, and facile surface modification capabilities, are synthetic multifunctional devices showcasing immense potential in the biomedical field. Specifically, in drug delivery, their powerful capacity for cargo loading and efficient transportation facilitates the precise targeting and release of therapeutic agents at designated sites within the organism's microenvironment. This review outlines recent advancements in the utilization of micromotors for precise drug delivery, meticulously examining key aspects: motors’ propulsion mechanisms, precise motion control, methodologies for drug loading and controlled release, the safety profiles of these devices, and their lifespan, essentially covering every facet of the precise drug delivery process. Additionally, it meticulously explores current challenges within this realm and forecasts prospective avenues for exploration, with the intent of steering research efforts that expedite the translation of micromotor application into clinical settings.</p>","PeriodicalId":86,"journal":{"name":"Materials Chemistry Frontiers","volume":" 5","pages":" 772-792"},"PeriodicalIF":6.0,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143480863","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-site cations in stannate perovskites affect their performance in catalysing CO2 electroreduction†","authors":"Guoqing Wang, Hao Yuan, Haiyan Zhang, Ruigang Liu, Shanhu Yue, Jiaxu Yan, Xiaoji Xie and Min Lu","doi":"10.1039/D4QM01042F","DOIUrl":"https://doi.org/10.1039/D4QM01042F","url":null,"abstract":"<p >Stannate perovskites (MSnO<small>₃</small>), benefiting from their high production of HCOOH and the perovskite structure-enabled tunability of properties, are emerging as promising catalysts for electrochemical CO<small>₂</small> reduction (CO<small>₂</small>R). However, optimizing the catalytic performance of MSnO<small>₃</small> for CO<small>₂</small>R remains largely unexplored. Here, we systematically study the catalytic performance of MSnO<small>₃</small> with a distinct A-site cation, M (M = Ba, Sr, and Ca), for CO<small>₂</small>R. Our experimental results show that the M cation dramatically affects the catalytic performance, especially the selectivity and stability. In particular, the CaSnO<small>₃</small>-based catalyst exhibits the highest selectivity to HCOOH and stability but the lowest activity. Further theoretical investigations reveal that the A-site cation can affect the selectivity of MSnO<small>₃</small> for the CO<small>₂</small>R reaction and may impact the stability of MSnO<small>₃</small>. Both experimental and theoretical findings reveal that stannate perovskites can be effective and selective catalysts for CO<small>₂</small>R, while their stability needs to be considered carefully. These results should shed light on the rational design of perovskite catalysts with desired performance for CO<small>₂</small>R.</p>","PeriodicalId":86,"journal":{"name":"Materials Chemistry Frontiers","volume":" 5","pages":" 856-865"},"PeriodicalIF":6.0,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143480868","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":"Multi-stimuli responsive smart materials: cyanine amphiphile self-assembly for photochromic and pH-switching applications†","authors":"Tzu-Yu Tseng, Yao-Chun Yeh, Wei Hsing, Lien-Chen Fu and Mei-Yu Yeh","doi":"10.1039/D4QM00931B","DOIUrl":"https://doi.org/10.1039/D4QM00931B","url":null,"abstract":"<p >Smart hydrogels, known for their stimuli-responsive properties in drug delivery, tissue engineering, and sensors, are typically created using a top-down approach, which limits precise molecular control. In this study, we employ a bottom-up strategy to achieve greater molecular precision, enabling the development of innovative, multi-stimuli-responsive hydrogels. We designed and synthesized asymmetric cyanine amphiphiles incorporating diphenylimidazole as the donor and indole as the acceptor to create molecules with intramolecular charge transfer characteristics. These diphenylimidazole-indole amphiphiles, DPIIH and DPIIF, differ in that DPIIH lacks a fluorine atom at the indole terminal, while DPIIF includes this substitution. Additionally, diphenylimidazole reveals nonplanar conformations and twisted dihedral angles between the phenyl rings at the 4,5-position of imidazole, giving it aggregation-induced emission properties. In contrast to DPIIH, DPIIF can self-assemble into a hydrogel in water, probably due to the hydrogen bonding interactions between DPIIF and water molecules. Through detailed exploration of DPIIF, it was found to exhibit a reversible photochromic effect in polar solvents and can undergo reversible acid–base reactions. The photoisomerization and pH stimulus-response behaviors of DPIIF can be observed <em>via</em> colorimetric and fluorescence changes, making it suitable for applications such as invisible ink and pH sensors. In its hydrogel state, DPIIF reveals reversible photoswitching and pH-switching features, enabling reversible sol–gel transitions. These properties suggest potential applications in both cell culture (gel state) and cell recovery (solution state), offering versatile functionality in biomedical and research settings. Furthermore, the fluorescent properties of the hydrogel can be used to study and visualize cell–material interactions in detail, providing valuable insights for various biological studies.</p>","PeriodicalId":86,"journal":{"name":"Materials Chemistry Frontiers","volume":" 5","pages":" 828-837"},"PeriodicalIF":6.0,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143480827","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":"Polymeric mixed ionic–electronic conductors based on quinoid–azaisoindigo for n-type organic electrochemical transistors†","authors":"Juntao Tan, Yiming Wang, Xiuyuan Zhu, Jiayao Duan, Riping Liu, Chaoyue Chen, Chong Ran, Zhengke Li, Bin Ai and Wan Yue","doi":"10.1039/D4QM01004C","DOIUrl":"https://doi.org/10.1039/D4QM01004C","url":null,"abstract":"<p >In the pursuit of channel materials for high-performance n-type organic electrochemical transistors (OECTs), several challenges have been encountered, including difficulties in the modification of the material structure, relatively low performance, and poor stability. To address these issues, designing innovative electron-deficient building blocks is critical for constructing novel donor–acceptor organic semiconductors with low LUMO levels to achieve high-performing n-type OECTs. In this study, we have designed and synthesized a novel glycolated quinone-based electron-deficient building block derived from azaisoindigo (AQM2I), featuring a cross-conjugated planar backbone and low LUMO levels, attributed to enhanced O–H interactions and strong electron-withdrawing amide groups. By combining AQM2I with alternating electron-rich building blocks (T, TT, 2T and 2FT), a series of novel n-type polymers that possessed mixed ionic–electronic conductivity were prepared. The incorporation of various electron-rich building blocks effectively modulates the backbone structure, molecular energy levels and sodium doping capability of the polymers. Moreover, a mixed conducting property with a maximum <em>μC</em>* figure-of-merit value of 0.53 F V<small>⁻¹</small> cm<small>⁻¹</small> s<small>⁻¹</small> for accumulation-mode n-type OECT was achieved, attributed to the high electron mobility induced by the enhanced lamellar stacking, smooth and dense film morphology. The design strategy for novel electron-deficient building blocks presented in this work provides insights for the development of high-performance materials for n-type OECTs.</p>","PeriodicalId":86,"journal":{"name":"Materials Chemistry Frontiers","volume":" 4","pages":" 725-734"},"PeriodicalIF":6.0,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143379678","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":"Arrays of ultra-thin selenium-doped zirconium-anodic-oxide nanorods as potential antibacterial coatings†","authors":"Kirill Kamnev, Maria Bendova, Zdenka Fohlerova, Tatiana Fialova, Oleh Martyniuk, Jan Prasek, Kristyna Cihalova and Alexander Mozalev","doi":"10.1039/D4QM01081G","DOIUrl":"https://doi.org/10.1039/D4QM01081G","url":null,"abstract":"<p >Two characteristic types of extraordinarily thin upright-standing ZrO<small>₂</small>-based nanorods self-aligned on a substrate, differing in diameters (20/30 nm), lengths (90/120 nm), and population densities (1.1/4.6 × 10<small>¹⁰</small> cm<small>⁻²</small>), were synthesized <em>via</em> the porous-anodic-alumina (PAA)-assisted anodization of Zr in 1.5 M selenic acid followed by selective PAA dissolution. A needle-like shape was achieved due to the unique formation of zirconium anodic oxide in extremely thin nanopores that grow only in selenic acid. The SEM, XPS, and Raman spectroscopy analyses revealed that the nanorods feature a core/shell structure in which the core is stoichiometric amorphous ZrO<small>₂</small>, and the shell is ∼6 nm thick hydroxylated zirconium dioxide ZrO<small>_{2−<em>x</em>}</small>(OH)<small>_2<em>x</em></small> mixed with Al<small>₂</small>O<small>₃</small>. The core and shell incorporated electrolyte-derived selenate (SeO<small>₄</small><small>²⁻</small>) ions, which replace up to 1% of the O<small>²⁻</small> ions in the nanorod surface layer. Besides, nanoparticles of elemental Se were deposited on the top of rods during anodic polarization. A model was developed for the cooperative ionic transport and electrochemical and solid-state reactions during the PAA-assisted growth of zirconium oxide in selenic acid. The two Se-doped top-decorated zirconium-oxide nanorod arrays were examined as potential antibacterial nanomaterials toward G-negative <em>E. coli</em> and G-positive <em>S. aureus</em>, using direct SEM observations of the bacteria–surface interfaces and carrying out the modified Japanese Industrial Standard test for antimicrobial activity and efficacy, JIS Z 2801. While specific differences in interaction with each type of bacteria were observed, both nanostructures caused a significant harmful synergetic effect on the bacteria, acting as non-metallic (Se) ion-releasing bactericidal coatings along with repellent and contact-killing activities arising from extraordinary needle-like nanoscale surface engineering.</p>","PeriodicalId":86,"journal":{"name":"Materials Chemistry Frontiers","volume":" 5","pages":" 866-883"},"PeriodicalIF":6.0,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/qm/d4qm01081g?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143480869","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":"On-surface gold-catalyzed hydroamination/cyclization reaction of alkynes†","authors":"Alejandro Jiménez-Martín, Tatiana Munteanu, Qifan Chen, Simon Pascal, Aura Tintaru, Benjamin Mallada, Pingo Mutombo, Olivier Siri, Pavel Jelínek and Bruno de la Torre","doi":"10.1039/D4QM00866A","DOIUrl":"https://doi.org/10.1039/D4QM00866A","url":null,"abstract":"<p >On-surface synthesis under ultra-high vacuum (UHV) conditions facilitates the fabrication of unique molecular compounds, replicating established in-solution protocols. However, the intramolecular hydroamination and cyclization (IHC) of alkynes on surfaces remain unexplored due to the challenges posed by the repulsion between the nitrogen lone pair and the alkyne π-system. Here we describe the first on-surface IHC of alkyne-functionalized molecular precursors in UHV environment on the Au(111) surface. Notably, the synthesis introduces two pyrrole groups into the quinoidal-based precursor, enabling the formation of two fused pyrrolo-benzoquinonediimine compounds not achievable in solution chemistry. To analyze the resulting reaction products, we utilized scanning tunneling microscopy and non-contact atomic force microscopy with single bond resolution, comparing these products to those obtained through traditional solution methods. In parallel to the experimental results, we provide a detailed computational description of the key role of single gold adatoms during the complete on-surface reaction.</p>","PeriodicalId":86,"journal":{"name":"Materials Chemistry Frontiers","volume":" 5","pages":" 838-846"},"PeriodicalIF":6.0,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/qm/d4qm00866a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143480865","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":"Achieving dual-mode long-persistence afterglow through an aromatic furan organic host–guest system†","authors":"Zheng Gong, Qingyang Cui, Xiancheng Nie, Guoqing Zhang and Biao Chen","doi":"10.1039/D4QM00977K","DOIUrl":"https://doi.org/10.1039/D4QM00977K","url":null,"abstract":"<p >Pure organic long-persistence luminescence has recently garnered significant attention due to its diverse potential applications. Nonetheless, the attainment of pure organic dual-mode long-persistence afterglow with high efficiency remains a significant challenge. Herein, we report the successful realization of high-efficiency, color-tunable dual-mode room-temperature phosphorescence (RTP) along with thermally activated delayed fluorescence (TADF) of approximately 50 ms, utilizing an aromatic furan organic host–guest system. Our investigation into this system reveals two key findings: (1) the heavy-atom effect of the host and guest molecules plays distinct roles in modulating the efficiency of the intersystem crossing (ISC) and reverse intersystem crossing (RISC) processes; and (2) the dual-mode long-persistence luminescence can be effectively adjusted by manipulating the energy gap between the excited triplet states of host and guest molecules. Additionally, we demonstrated the capability for color display utilizing this host–guest system through inkjet printing.</p>","PeriodicalId":86,"journal":{"name":"Materials Chemistry Frontiers","volume":" 4","pages":" 676-683"},"PeriodicalIF":6.0,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/qm/d4qm00977k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143379718","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":"New opportunities for emerging two-dimensional metastable-phase noble metal oxides in acidic electrocatalytic water splitting","authors":"Qun Wang, Mingwang Shao and Qi Shao","doi":"10.1039/D4QM00682H","DOIUrl":"https://doi.org/10.1039/D4QM00682H","url":null,"abstract":"<p >Metastable-phase materials possess unique structures, high Gibbs free energy, abundant active sites, and adjustable physicochemical properties, making them ideal candidates for optimizing electrocatalysis. As metal oxides are stable under harsh reaction conditions, by controlling the morphology, defects and phase structure of the material, the surface electronic structure of metal oxides can be adjusted to a great extent, and their catalytic performance can be optimized. As a novel addition to the 2D material family, metastable-phase noble metal oxides exhibit significant promise for catalytic reactions. Here, the latest research progress and advantages of 2D metastable-phase noble metal oxides are reviewed, and their application in acidic electrocatalytic water splitting is presented. Finally, the challenges associated with 2D metastable-phase noble metal oxides and future perspectives are discussed.</p>","PeriodicalId":86,"journal":{"name":"Materials Chemistry Frontiers","volume":" 4","pages":" 580-591"},"PeriodicalIF":6.0,"publicationDate":"2025-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143379674","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}