Materials Chemistry Frontiers最新文献

{"title":"Pyrazine-bridged polynitro triazoles for high energy and practical stability","authors":"Abhishek Kumar Yadav, Richard J. Staples and Jean’ne M. Shreeve","doi":"10.1039/D5QM00880H","DOIUrl":"https://doi.org/10.1039/D5QM00880H","url":null,"abstract":"<p >The design, synthesis and characterization of a symmetric, pyrazine-bridged, C–C bonded hexanitro molecule, 2,5-bis(3-(trinitromethyl)-1<em>H</em>-1,2,4-triazol-5-yl)pyrazine (<strong>5</strong>), together with its nitrogen-rich energetic salts (<strong>7–9</strong>), prepared from inexpensive, commercially available precursors is described. Structures were characterised by multinuclear NMR (<small>¹</small>H, <small>¹³</small>C, <small>¹⁴</small>N), IR, elemental analysis and DSC; compound <strong>8</strong> was further supported by <small>¹⁵</small>N NMR and the structure of <strong>5</strong> was unambiguously established by single-crystal X-ray diffraction. Systematic evaluation of physicochemical and energetic properties reveals high densities (1.73–1.89 g cm<small>⁻³</small>), good thermal stability (150–215 °C), competitive detonation performance (VOD = 8093–8967 m s<small>⁻¹</small>; DP = 27.0–32.4 GPa) and low mechanical sensitivities (IS = 25–40 J; FS = 360 N). The neutral hexanitro compound <strong>5</strong> displays balanced properties (density 1.73 g cm<small>⁻³</small>, onset thermal decomposition 150 °C, VOD 8093 m s<small>⁻¹</small> and oxygen balance OB<small>_co</small> ≈ 0%), while the corresponding salts (<strong>7–9</strong>) exhibit higher densities (&gt;1.87 g cm<small>⁻³</small>), enhanced thermal robustness (&gt;205 °C), superior detonation velocities (&gt;8558 m s<small>⁻¹</small>) and increased resistance to mechanical stimuli (IS = 40 J). The pyrazine-bridged, C–C bonded architecture therefore gives a favorable balance of energy, thermal stability and insensitivity, suggesting a viable structural strategy for the development of next-generation, insensitive secondary energetic materials.</p>","PeriodicalId":86,"journal":{"name":"Materials Chemistry Frontiers","volume":" 7","pages":" 1147-1154"},"PeriodicalIF":6.4,"publicationDate":"2026-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147558370","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":"Yolk–shell structured MnCo2O4.5 nanospheres for high performance lithium-ion battery anodes","authors":"Yanhui Qiu, Jingchao Zhu, Xintao Zuo, Dapeng Liu and Yu Zhang","doi":"10.1039/D6QM00014B","DOIUrl":"https://doi.org/10.1039/D6QM00014B","url":null,"abstract":"<p >A facile approach is reported for preparing defect-rich yolk–shell MnCo<small>₂</small>O<small>_4.5</small> nanospheres by simply tuning the Mn/Co ratio. Benefiting from their multivalent redox chemistry, Mn–Co bimetallic oxides exhibit rich electrochemically active sites as well as favorable reaction kinetics. The core–void–shell architecture enables efficient electrolyte penetration, short ion/electron transport pathways, and effective buffering of the volume variation associated with conversion reactions during repeated lithiation/delithiation. As a lithium-ion battery anode, the optimized MnCo<small>₂</small>O<small>_4.5</small>-5 sample (Co/Mn = 5 : 1) delivers a reversible capacity of 578.5 mAh g<small>⁻¹</small> after 400 cycles at 2 A g<small>⁻¹</small>, together with excellent rate capability of 680.9 mAh g<small>⁻¹</small> at 5 A g<small>⁻¹</small>. This work demonstrates that integrating compositional synergy and defect regulation with a mechanically adaptive yolk–shell configuration provides an effective pathway to simultaneously improve electrochemical kinetics and structural robustness, offering a promising design paradigm for high performance conversion-type anodes.</p>","PeriodicalId":86,"journal":{"name":"Materials Chemistry Frontiers","volume":" 6","pages":" 955-963"},"PeriodicalIF":6.4,"publicationDate":"2026-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147558378","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":"Enzyme-responsive DNA smart materials for biomedical applications","authors":"Mingxing Liu, Yu Han, Wei Tan, Xiaocui Guo, Chi Yao and Dayong Yang","doi":"10.1039/D5QM00903K","DOIUrl":"https://doi.org/10.1039/D5QM00903K","url":null,"abstract":"<p >Deoxyribonucleic acid (DNA) has emerged as a highly programmable, biocompatible and structurally versatile building block for the construction of multifunctional biomaterials, presenting broad application potential in biomedicine. With advances in DNA nanotechnology, dynamic DNA architectures responsive to various stimuli such as pH, temperature, light, ions and enzymes, have been developed. Among these stimuli, enzymes are particularly promising triggers due to their abundant presence in physiological and pathological contexts, where their expression or activity is often altered in disease states. Enzyme-responsive DNA smart materials, designed to exploit endogenous enzymes or delivered exogenous enzymes, enable disease-specific targeting, spatiotemporally controllable drug release, and sensitive diagnostic detection. This review outlines the structural and functional characteristics of enzymes relevant to DNA materials and summarizes the design principles for engineering enzyme-responsive DNA smart materials. We then survey the types and the latest advances of enzyme-responsive DNA smart materials, focusing on their applications in drug delivery, diagnosis and biosensing, cell regulation and tissue engineering. Finally, we discuss current challenges and future directions for the development of enzyme-responsive DNA smart materials in translational biomedicine.</p>","PeriodicalId":86,"journal":{"name":"Materials Chemistry Frontiers","volume":" 7","pages":" 1018-1045"},"PeriodicalIF":6.4,"publicationDate":"2026-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147558468","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":"Core extension of alkylene-encapsulated perylene bisimides","authors":"Shunfeng Peng, Zhiye Zheng, Shijie Chen, Hui Zhang and Hongyu Wang","doi":"10.1039/D5QM00827A","DOIUrl":"https://doi.org/10.1039/D5QM00827A","url":null,"abstract":"<p >Molecular engineering of perylene bisimides <em>via</em> long-axis covalent macrocyclic encapsulation and short-axis core-extension is presented. Macrocyclic encapsulation suppresses aggregation, resulting in dual-state emission in both solution and solid states. Core extension enables precise tuning of optoelectronic properties. Furthermore, tetrachlorinated <strong>Cycle-PBI-4Cl</strong> exhibits cyclization-promoted photoinduced intramolecular electron transfer, while the unilateral and bilateral sila-annulated <strong>Cycle-PBI-Si</strong> and <strong>Cycle-PBI-2Si</strong> demonstrate selective fluoride anion sensing through fluoride-induced Si–C bond cleavage. This work highlights the significant potential of this dual functionalization strategy, modifying both the short and long molecular axes of PBIs, for developing diverse functional materials.</p>","PeriodicalId":86,"journal":{"name":"Materials Chemistry Frontiers","volume":" 7","pages":" 1166-1179"},"PeriodicalIF":6.4,"publicationDate":"2026-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147558372","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":"MOF-derived doped porous carbon-based catalysts for CO2 electroreduction: design, mechanisms, and scale-up","authors":"Huawen Hu, Jin Liu, Wenbo Li, Hengtao Wen, Xiting Yang, Baoyi Ke, Xiaowen Wang, Xuejun Xu and Guangjin Wang","doi":"10.1039/D5QM00888C","DOIUrl":"https://doi.org/10.1039/D5QM00888C","url":null,"abstract":"<p >The electrochemical reduction of CO<small>₂</small> (CO<small>₂</small>RR) enables renewable-electricity-driven conversion of CO<small>₂</small> into value-added chemicals and fuels, but practical deployment is limited by competing hydrogen evolution, incomplete structure–function understanding, and the need for high-rate, durable operation. MOF-derived porous carbon-based catalysts—especially those embedding transition-metal sites and/or alkali-metal promoters—have emerged as a versatile platform because their pore architecture, heteroatom environment, and metal dispersion can be programmed through precursor design and thermal transformation. In this review, we critically synthesize recent progress in MOF-derived carbon-based electrocatalysts for the CO<small>₂</small>RR, linking precursor selection, pyrolysis/activation parameters, and doping strategies to the formation of well-defined active-site motifs (<em>e.g.</em>, M–N<small>_<em>x</em></small> single-atom sites, metal clusters, and bimetallic configurations) and transport-relevant hierarchical porosity. We highlight how transition-metal centers govern key elementary steps (CO<small>₂</small> activation, *COOH formation, and *CO binding/desorption), while alkali cations regulate the interfacial microenvironment by tuning electric double-layer fields, local pH, and intermediate stabilization, thereby reshaping selectivity—particularly toward C<small>₂₊</small> products. To improve discoverability and reproducibility, we summarize best practices for reporting catalyst structure and CO<small>₂</small>RR metrics across reactor configurations, and we discuss emerging <em>operando</em>/<em>in situ</em> characterization and multiscale modeling workflows that resolve active-site dynamics under working conditions. Finally, we outline scale-up considerations—from GDE/MEA operation at industrially relevant current densities to manufacturable electrode fabrication—and propose data-driven, high-throughput discovery strategies to accelerate translation. Collectively, this review provides a design-and-evaluation roadmap for developing efficient, mechanistically understood, and scalable MOF-derived porous carbon-based catalysts for CO<small>₂</small> electroreduction.</p>","PeriodicalId":86,"journal":{"name":"Materials Chemistry Frontiers","volume":" 6","pages":" 888-921"},"PeriodicalIF":6.4,"publicationDate":"2026-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147558373","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":"Integrated molecular functions in photo-generated hydrogels for wound healing","authors":"Xiangchuan Xu, Huanhuan Tong, Hongtao Kong, Canwen Chen, Ping Fan, Wenhuan Huang, Hui Miao, Guoqing Zhang and Rui Zhu","doi":"10.1039/D5QM00819K","DOIUrl":"https://doi.org/10.1039/D5QM00819K","url":null,"abstract":"<p >Photo-generated antimicrobial hydrogels, typically composed of a photoinitiator, a photocatalyst, and a monomer, represent a promising advancement in wound healing applications. These hydrogels offer several advantages, including light-controlled on-demand gel formation, localized antimicrobial action, and improved tissue regeneration. However, existing systems often suffer from excessive employment of different molecules to realize required functionalities, which hinders their practical clinical use. In this study, we present a double-integrated molecular design strategy, <em>i.e.</em>, performing two molecular functions with a single molecule, to realize reduced use of molecular components to maintain functionality. We also show that such photo-generated hydrogels demonstrate equally excellent performance in wound healing, including non-hemolytic properties and strong adhesion. Control experiments performed on wounds infected with <em>P. aeruginosa</em> further revealed that the hydrogel accelerated recovery compared to standard treatments. These findings suggest that photo-generated hydrogels with a reduced number of components can offer an enhanced solution for treating infected wounds, paving the way for more efficient and more practical wound care technologies.</p>","PeriodicalId":86,"journal":{"name":"Materials Chemistry Frontiers","volume":" 7","pages":" 1155-1165"},"PeriodicalIF":6.4,"publicationDate":"2026-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147558371","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 quantum yield NIR emission via charge transfer states in buckybowl-TPA based D–A systems","authors":"Yumi Yakiyama, Junyi Han, Hayato Sakai, Taku Hasobe, Youhei Takeda, Ryohei Kishi, Kei Ohkubo and Hidehiro Sakurai","doi":"10.1039/D5QM00818B","DOIUrl":"https://doi.org/10.1039/D5QM00818B","url":null,"abstract":"<p >The development of highly efficient near-infrared (NIR) emissive materials presents tremendous opportunities across diverse applications, from biological imaging to advanced optoelectronics. While planar aromatic dyes have traditionally dominated this field, we report herein the successful design and synthesis of a novel bowl-shaped NIR dye, <strong>TPA-TOS</strong>, incorporating the rarely emissive trioxosumanene (<strong>TOS</strong>) as the acceptor and triphenylamine (<strong>TPA</strong>) as the donor. In polar solvents, <strong>TPA-TOS</strong> exhibited weak luminescence confined to the UV region; however, in nonpolar environments, it demonstrated intense NIR emission spanning the 650 to 850 nm range. Remarkably, a quantum yield exceeding 60% in the NIR range was achieved, attributed to an intriguing photo-relaxation pathway. This mechanism involves exciton relaxation from localized excitation to the charge transfer (CT) state, mediated by thermally activated delayed fluorescence (TADF) between CT singlet and triplet states, along with room-temperature phosphorescence (RTP), ultimately transitioning to a long-lived charge-separated (CS) state. The outstanding amphiphilic nature, high quantum yield of NIR dual emission enabled by TADF and RTP, and the generation of a long-lived CS state are likely driven by the pronounced spin–orbit coupling facilitated by the curved sumanene skeleton. This work establishes <strong>TPA-TOS</strong> as a platform for NIR materials and insights into non-planar photophysics.</p>","PeriodicalId":86,"journal":{"name":"Materials Chemistry Frontiers","volume":" 6","pages":" 938-946"},"PeriodicalIF":6.4,"publicationDate":"2026-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2026/qm/d5qm00818b?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147558375","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":"Controlling crystallization pathways: a universal Na+/K+ ion switch for mesostructure engineering of zeolites","authors":"Zhaoqi Ye, Yifan Zhang, Kexin Yan, Hongbin Zhang, Zhengmin Yu, Zhizheng Sheng, Ke Du, Yahong Zhang and Yi Tang","doi":"10.1039/D5QM00905G","DOIUrl":"https://doi.org/10.1039/D5QM00905G","url":null,"abstract":"<p >Precise mesostructure engineering of zeolites remains a formidable challenge due to the complexity of crystallization and precursor heterogeneity. Conventional methods often rely on costly organics or destructive post-synthetics, lacking simplicity and scalability. Herein, we report a facile and universal “Na<small>⁺</small>/K<small>⁺</small> ion switch” strategy to precisely tailor the mesostructure of zeolite beta in a seed-induced system. Merely switching Na<small>⁺</small> to K<small>⁺</small> without altering other parameters redirects the crystallization pathway, yielding unique mulberry-like hollow nanocrystal assemblies (beta-K) instead of conventional dense single crystals (beta-Na). Through multi-curve kinetic analysis and visual tracking, we elucidate that K<small>⁺</small> fosters moderately aggregated gels that evolve into semi-crystalline nanoparticles for oriented attachment, whereas Na<small>⁺</small> promotes excessive gelation leading to classical dissolution–recrystallization. This ion switch effect, synergistically modulated by inorganic alkalinity, proves universally applicable, enabling predictable “dense–loose” morphology control across diverse zeolites (ZSM-5, ZSM-11, zeolite L and mordenite). The hollow, mesopore-rich beta-K mesocrystals demonstrate superior catalytic performance in macromolecular conversion (<em>e.g.</em>, low-density polyethylene cracking), achieving a tenfold faster rate than beta-Na due to enhanced mass transfer and acid site accessibility. This work provides a green, mechanism-driven paradigm for designing functional crystalline materials with tailored architectures.</p>","PeriodicalId":86,"journal":{"name":"Materials Chemistry Frontiers","volume":" 7","pages":" 1071-1084"},"PeriodicalIF":6.4,"publicationDate":"2026-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147558470","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":"Molecular and supramolecular room temperature phosphorescences from metal free carbonyl functionalized triazinic scaffold","authors":"Daniele Malpicci, Daniele Marinotto, Elena Lucenti, Luca Zecchinello, Chiara Botta, Alessandra Forni and Elena Cariati","doi":"10.1039/D5QM00794A","DOIUrl":"https://doi.org/10.1039/D5QM00794A","url":null,"abstract":"<p >The photophysical behavior in solution, PMMA films and crystals of PhCHO mono-, <strong>TTPhCHO</strong>, and tri-substituted, <strong>TT(PhCHO)<small>₃</small></strong>, cyclic triimidazole (<strong>TT</strong>) derivatives is here reported and analyzed through computational and X-ray diffraction studies. The two compounds are poorly fluorescent in diluted solution but display aggregation-induced emissive, AIE, behavior in the solid state where molecular and multiple supramolecular long lived radiative deactivation channels are turned on. In particular, in PMMA films, <strong>TTPhCHO</strong> is mailny fluorescent while <strong>TT(PhCHO)<small>₃</small></strong> is only phosphorescent. In crystals, both compounds show exclusively long lived components of molecular (HEP), CHO⋯TT (MEP) and π–π (TT-TT or TT-Ph, LEP) supramolecular origin as disclosed through theoretical and single crystal X-ray diffraction analysis. The different behaviour observed in PMMA films has been assigned to the easier S–T intersystem crossing associated with the three <em>vs.</em> one carbonyl substituents in <strong>TT(PhCHO)<small>₃</small></strong> and <strong>TTPhCHO</strong>, respectively.</p>","PeriodicalId":86,"journal":{"name":"Materials Chemistry Frontiers","volume":" 7","pages":" 1085-1095"},"PeriodicalIF":6.4,"publicationDate":"2026-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2026/qm/d5qm00794a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147558471","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":"Room temperature phosphorescence from a benzothiophene-based N–B–N multi-resonance core","authors":"Durai Karthik, Abhishek Kumar Gupta and Eli Zysman-Colman","doi":"10.1039/D5QM00893J","DOIUrl":"https://doi.org/10.1039/D5QM00893J","url":null,"abstract":"<p >We report a design strategy that enables room temperature phosphorescence from an N–B–N type heterocycle, reminiscent of a multi-resonance thermally activated delayed fluorescence (MR-TADF) compound, by disturbing the alternating frontier molecular orbital distribution pattern through five-membered ring fusion with the boron atom. The 2 wt% doped film in mCP host showed a long phosphorescence lifetime of 51.5 ms at 571 nm at room temperature, with an afterglow visible for up to 1 s.</p>","PeriodicalId":86,"journal":{"name":"Materials Chemistry Frontiers","volume":" 6","pages":" 947-954"},"PeriodicalIF":6.4,"publicationDate":"2026-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147558376","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}