Macromolecular Rapid Communications最新文献

{"title":"Issue Information: Macromol. Rapid Commun. 17/2026","authors":"","doi":"10.1002/marc.70421","DOIUrl":"https://doi.org/10.1002/marc.70421","url":null,"abstract":"","PeriodicalId":205,"journal":{"name":"Macromolecular Rapid Communications","volume":"47 17","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/marc.70421","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148878482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring 2-D σ−σ* Conjugation in Cyclic Polysiloxane Copolymers","authors":"Zijing Zhang,&nbsp;Cecilia Pilon,&nbsp;Pimjai Pimbaotham,&nbsp;Siriporn Jungsuttiwong,&nbsp;Aleksander Rebane,&nbsp;Richard M. Laine","doi":"10.1002/marc.70348","DOIUrl":"10.1002/marc.70348","url":null,"abstract":"<p>Here, we aim to clearly define phenomena previously termed unconventional conjugation involving conjugation across Si─O─Si bonds. The goal is to define operative mechanisms and provide general routes to easily accessible Si─O─Si containing copolymers using commercially available [vinylMeSiO]₄, Vy₄D₄ (Vy = vinyl consistent with previous reports). Thus, 1:1 Vy₄D₄:Ar copolymers synthesized using Heck catalytic cross coupling (DPs 5–20) exhibit absorption λ_max typical of aromatic groups with weak, red-shifted shoulders now recognized as σ-σ* transitions. Emission λ_max redshift 40–80 nm from model compounds. Substituent dependent Ar’ substitution at remaining ring vinyls modulates emission photophysics. Thiophene co-monomers in the main chain or as “decorated” substituents present the most red-shifted, lowest-energy excited states. In undecorated main chain copolymers, σ-σ* conjugation appears operative. In decorated systems, three mechanisms are possible. Conjugation via the ring to the main chain, possible Förster-type energy transfer involving decorated substituents or both. Excited state lifetime emission studies reveal two different emitting states, suggesting both mechanisms operate. Further proof is obtained on mixing copolymers with F₄TCNQ. As with traditional conjugated polymers, formation of F₄TCNQ^−. radical anion indicates electron transfer only seen when conjugation exists. In the current studies, F₄TCNQ^−. forms for both undecorated and decorated copolymers indicating conjugation and σ-σ* transitions. Most important, decorated Vy₄D₄ or [Vy₄D₄]Ar’_2-5 systems <i>not part of a copolymer</i> also form the radical anion F₄TCNQ^−. implying that even simple, substituted cyclomers can exhibit σ-σ* conjugation, suggesting multiple families of easily accessible σ-σ* conjugated systems. Further proof comes from theoretical modeling, indicating the cyclomer flattens significantly in the excited state. Thus, decorated {[Vy₄D₄]Ar’_2-4}-Ar- copolymers offer what can be termed 2-D conjugation. One question remains: Do the conjugated cyclomers exhibit “ring current” in the excited state via σ-σ* conjugation?</p>","PeriodicalId":205,"journal":{"name":"Macromolecular Rapid Communications","volume":"47 17","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/marc.70348","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148300415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thermomechanical Behavior of Carboxylated CNT/PDMS Composite","authors":"Kaijie Zhang,&nbsp;Yuanyuan Ren,&nbsp;Liuzhang Hu,&nbsp;Longjian Xue","doi":"10.1002/marc.70361","DOIUrl":"10.1002/marc.70361","url":null,"abstract":"<div>\u0000 \u0000 <p>Carbon nanotube (CNT) / polydimethylsiloxane (PDMS) composites are widely used in flexible electronics and sensors, yet the impact of heat generated during operation on their mechanical performance remains poorly understood. Here, we systematically investigated the temperature-dependent elastic modulus of properly cured carboxylated CNT (c-CNT) / PDMS composite (CP) by dynamic mechanical analysis. A critical temperature (T_c) is identified, below which the elastic modulus of CP (E_CP) remains stable, while above T_c, E_CP increases sharply following the temperature, characterized by a distinct growth rate (δ_E). It reveals that T_c is an inherent property of PDMS and corresponds to the onset of secondary crosslinking in PDMS. And the sharp increase in modulus at a temperature above T_c arises from the entropy elasticity and the accumulative crosslinking-induced increase in elastic modulus (ACIEM). c-CNT introduces strong hydrogen bonding with the PDMS matrix, effectively reducing both T_c and δ_E. This work not only gains new insight into the thermomechanical behavior of CP, but also offers guidelines for the application of PDMS-based composites under varying thermal conditions.</p>\u0000 </div>","PeriodicalId":205,"journal":{"name":"Macromolecular Rapid Communications","volume":"47 17","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148467960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cation-π Dynamic Cross-Linking Enabled High-Performance PVA Films With Synchronous Strength-Toughness Enhancement, Self-Healing, and Recyclability","authors":"Yang Xu,&nbsp;Jinping Yu,&nbsp;Yiwen Lu,&nbsp;Li Yang,&nbsp;Guanjun Chang","doi":"10.1002/marc.70374","DOIUrl":"10.1002/marc.70374","url":null,"abstract":"<div>\u0000 \u0000 <p>Poly (vinyl alcohol) (PVA), a representative biodegradable and water-soluble polymer, suffers from high crystallinity, a strength‑toughness trade‑off, and poor thermal stability arising from strong interchain hydrogen bonding. Conventional modification strategies fail to simultaneously achieve synergistic enhancement of strength-toughness and functionalization, severely restricting its engineering applications. Herein, inspired by the robust yet dynamic nature of cation-π interactions, we present a universal design strategy for high-performance water-soluble polymers based on indole-Mg²⁺ cation-π dynamic cross-linking. Molecular simulations and spectroscopic characterization demonstrate that Mg²⁺ forms strong cation-π interactions with indole moieties, exhibiting a binding energy of −113 kJ mol⁻¹. Mechanical testing reveals that the optimally formulated PVAI-_7.5%Mg²⁺ film achieves a tensile strength of 51 MPa (a 130% increase from 22 MPa) and an elongation at break of 400% (enhanced from 320%), thereby realizing synchronous improvement of strength and toughness. Benefiting from the dynamic reversibility of cation-π interactions, the film exhibits autonomous scratch healing within 12 h at room temperature without external stimuli, while retaining excellent water solubility that enables multiple recovery and reprocessing cycles via solvent-based methods without performance degradation. This study overcomes the dual bottlenecks of the strength-toughness trade-off and the performance-functionalization incompatibility inherent to PVA modification, offering new avenues for the high-performance and multifunctional design of water-soluble polymers and providing experimental and theoretical insights into the application of cation-π interactions in polymeric materials.</p>\u0000 </div>","PeriodicalId":205,"journal":{"name":"Macromolecular Rapid Communications","volume":"47 17","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148560233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Front Cover: Exploring 2-D σ−σ* Conjugation in Cyclic Polysiloxane Copolymers","authors":"Zijing Zhang,&nbsp;Cecilia Pilon,&nbsp;Pimjai Pimbaotham,&nbsp;Siriporn Jungsuttiwong,&nbsp;Aleksander Rebane,&nbsp;Richard M. Laine","doi":"10.1002/marc.70393","DOIUrl":"https://doi.org/10.1002/marc.70393","url":null,"abstract":"<p>In the Research Article (DOI: 10.1002/marc.70348), Richard M. Laine and co-workers find σ-σ* conjugation in copolymers synthesized by reacting the cyclomer [vinylMeSiO]4 in a 1:1 ratio with various Br─Ar─Br. Further, on modifying the remaining unsubstituted viny groups with Br─Ar', the main chain photophysics is changed. As a test, Br─Ar' groups are appended on the cyclomer alone. As σ-σ* conjugation is observed, coincident with significant flattening of the ring reveals as 140℃ bond angles perhaps suggesting ring current.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":205,"journal":{"name":"Macromolecular Rapid Communications","volume":"47 17","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/marc.70393","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148878236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Macromolecular Doping of Polyaniline Toward All-in-One Supercapacitors with Enhanced Electrochemical Performance and Biocompatibility.","authors":"Xiangya Wang, Guangcun Ma, Yuxia Zhang, Mohammed Kamal Hadi, Fen Ran","doi":"10.1002/marc.70424","DOIUrl":"https://doi.org/10.1002/marc.70424","url":null,"abstract":"<p><p>Limitations of conventional small molecule protonic acids used for doping polyaniline (PANI) including rapid performance degradation, potential cytotoxic effects, and the risk of provoking tissue inflammation; these pose significant challenges for biomedical applications. To overcome these issues, the use of poly(4-styrenesulfonic acid) (PSS) as a macromolecular dopant is proposed in this work; a stable PANI: PSS is synthesized and employed as an electrode material. This electrode material is integrated with a gel electrolyte formulated from gelatin and carboxylated chitosan to construct an all-in-one supercapacitor. This integrated design effectively eliminates interfacial resistance between the electrode and the electrolyte while simultaneously enhancing the mechanical integrity and operational stability of the device under physiological conditions. The all-in-one supercapacitor constructed by PANI: PSS as the electrode material demonstrates notable electrochemical performance, characterized by high specific capacitance, excellent long-term cycling stability, and reliable rate capability. Furthermore, comprehensive in vitro biocompatibility evaluations of the all-in-one supercapacitor are conducted, which reveal minimal cytotoxicity, no significant induction of inflammatory responses, and high blood compatibility, especially anticoagulant properties. These findings confirm the material suitability for use in implantable biomedical devices, and this study establishes a practical and reliable strategy for the development of safe, efficient, and biocompatible power sources.</p>","PeriodicalId":205,"journal":{"name":"Macromolecular Rapid Communications","volume":" ","pages":"e70424"},"PeriodicalIF":4.1,"publicationDate":"2026-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148878609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Predicting Faster Than We Can Make: Polymer-Specific Process Physics as a Frontier for Autonomous Soft-Matter Discovery.","authors":"Xian Jun Loh","doi":"10.1002/marc.70420","DOIUrl":"https://doi.org/10.1002/marc.70420","url":null,"abstract":"<p><p>Machine learning is now a productive tool in polymer research, predicting many properties and proposing new structures by generative design. For the materials whose behaviour is set by processing rather than chemistry alone, our capacity to propose polymers is beginning to outrun our capacity to make, process, and validate them. This Perspective argues that a key bottleneck for these materials is not model architecture but a polymer-specific gap: macroscopic, processing-dependent properties and slow validation timescales. I distinguish chemistry-dominated, condition-dependent, and process-history-dependent properties, and develop two contrasting cases: sustainable thermoplastics, governed by melt flow and thermal history, and supramolecular hydrogels, governed by aqueous self-assembly. I propose and stress-test a self-driving laboratory built around the parts the autonomous-materials literature has under-served for polymers: handling viscous, non-Newtonian melts and sol-gel transitions; preserving shear and thermal history; surrogate simulators to keep the loop fast; and mechanism-preserving accelerated tests for slow properties. The contribution is not the closed loop, which is well established, but the claim that, for non-dilute melts, concentrated solutions, and assembled soft matter, and for properties whose validation runs to months or years, polymer process physics and slow-property validation are among its principal frontiers. Investing there turns computational acceleration into deployed materials.</p>","PeriodicalId":205,"journal":{"name":"Macromolecular Rapid Communications","volume":" ","pages":"e70420"},"PeriodicalIF":4.1,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148872254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multi-Interface Polarization Modulation in Cu@TiO₂@MgO/PVDF for Enhanced Dielectric Constant and Breakdown Performances.","authors":"Siyu Zhao, Wenying Zhou, Yaofei Lin, Xiaopeng Han, Chenyang Li, Xiubin Ren, Zhen Liu, Yuan Jia","doi":"10.1002/marc.70417","DOIUrl":"https://doi.org/10.1002/marc.70417","url":null,"abstract":"<p><p>Decoupling control and collaborative improvement in both dielectric constant (ε) and breakdown strength (E_b) while holding low loss of polymeric composites, constitutes a challenge for power electronics and energy storage systems. To realize this objective in copper (Cu)/polyvinylidene fluoride (PVDF) nanocomposites, the Cu nanoparticles were initially coated with titanium oxide (TiO₂) and magnesium oxide (MgO), respectively, followed by compounding with PVDF to investigate the double‑shell' effect on dielectric performance. The results demonstrate that the Cu@TiO₂@MgO/PVDF displays elevated ε and E_b, along with lower loss dissipation (tanδ) when compared to Cu/PVDF. The increased ε is attributed to the enhancement of both high-frequency intra‑particle and low‑frequency inter‑particle polarizations resulting from the double-interlayer. The TiO₂@MgO not only prevents direct contact between Cu nanoparticles but also creates charge traps, reducing the tanδ and leakage conductivity. The double shell mitigates interfacial dielectric parameter mismatch, thereby enhancing the E_b. Simulations and theoretical calculations reveal the multiple polarization mechanisms and the regulated charge transport behavior in the Cu@TiO₂@MgO/PVDF. The conductive core-insulating double-shell strategy provides an insightful view on promoting multiple polarizations and suppressing charge migration in percolating polymer nanocomposites. The Cu@TiO₂@MgO/PVDF with boosted ε and E_b alongside suppressed tanδ showcases appealing potential applications in power electronic devices.</p>","PeriodicalId":205,"journal":{"name":"Macromolecular Rapid Communications","volume":" ","pages":"e70417"},"PeriodicalIF":4.1,"publicationDate":"2026-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148786343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Shaping Liquid Crystal Rubbers by Chemical Potential Gradient.","authors":"Mahesha Kodithuwakku Arachchige, Zakaria Siddiquee, Rohan Dharmarathna, Antal Jákli","doi":"10.1002/marc.70418","DOIUrl":"https://doi.org/10.1002/marc.70418","url":null,"abstract":"<p><p>Techniques for shaping materials have constantly evolved from the making of hand axes in the Stone Age to today's 3D and 4D printing. One of the 4D printing techniques is utilizing chemical potential gradient where uniform swelling of gels with a structural gradient leads to preprogrammed shapes. This work investigates the inverse effect: swelling a uniform structure by a diffusion gradient. First, the recently observed temporal shape changes of liquid crystal elastomer (LCE) films based on diffusion of low molecular weight liquid crystal drops into the LCE are simulated, showing excellent agreement with the experiments. Second, ways of locking the desired LCE shape by UV-induced polymerization or by crystallization of a reactive low molecular weight LC additive are investigated. It is shown that the crystallization of the diffusing low molecular weight LC provides the fastest and most complete locking of the shape. It is envisioned that using the gradient of the chemical potential either by pre-patterning the director structure of the LCE film or by appropriate spatial distribution of LC droplets, any complex shapes of LC rubbers can be engineered. This may provide a new and effective way of shaping rubbers for applications in various fields, such as sealants, soft robotics and bioimplants.</p>","PeriodicalId":205,"journal":{"name":"Macromolecular Rapid Communications","volume":" ","pages":"e70418"},"PeriodicalIF":4.1,"publicationDate":"2026-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148786368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Regulating the Dynamic Properties of Knoevenagel Condensation Cross-Linked Hydrogels via Thia-Michael Addition Reaction.","authors":"Yu Yan, Ruizhu Yang, Mingming Zhao, Yuqian Ji, Zhiqiang Sun, Xiaonong Zhang, Chunsheng Xiao","doi":"10.1002/marc.70416","DOIUrl":"https://doi.org/10.1002/marc.70416","url":null,"abstract":"<p><p>The strategies for regulating dynamic mechanical properties of dynamic hydrogels have attracted significant attention. Herein, we developed a new strategy to regulate the dynamic properties of Knoevenagel condensation (KC) reaction cross-linked hydrogels through reversible thia-Michael addition reaction. In this system, the dynamic C═C bonds formed by the reversible KC reaction could react with thiols via the reversible Michael addition reaction, leading to the structural changes from C═C to C─C bonds and thereby enabling effective modulation of the hydrogel's viscoelastic behaviors. Furthermore, decreasing the pH reduced the reverse reaction rates of both the KC reaction and the thia-Michael addition reaction, reinforcing the stability of the C═C bonds and thia-Michael adducts. To implement this dual regulation, N-acetylcysteine, a small molecule containing both thiol and carboxyl groups, was introduced, which allowed synergistic modulation through thiol-C═C reversible addition and pH responsiveness. This cooperative regulation enables fine-tuned control of hydrogel dynamics, extending stress relaxation time from 20 to 1900 s, enhancing the storage modulus from 2205 to 4705 Pa, and improving the structural stability. Overall, this reversible thia-Michael addition-mediated mechanism paves a new way for regulating the dynamic properties of the KC reaction cross-linked hydrogels.</p>","PeriodicalId":205,"journal":{"name":"Macromolecular Rapid Communications","volume":" ","pages":"e70416"},"PeriodicalIF":4.1,"publicationDate":"2026-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148786352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}