IF 5.4 1区化学

GIANT Pub Date : 2025-02-01 Epub Date: 2025-01-02 DOI: 10.1016/j.giant.2024.100351

Songpo Duan , Xin Ouyang , Yingsheng Liu , Dingyi Shen , Zhiming Li , Sijie Song , Hong Shen

{"title":"Thermosensitive ferulic acid-modified chitosan gel coatings loaded with selenium nanoparticles for enhanced grape foliar rainfastness and selenium uptake","authors":"Songpo Duan , Xin Ouyang , Yingsheng Liu , Dingyi Shen , Zhiming Li , Sijie Song , Hong Shen","doi":"10.1016/j.giant.2024.100351","DOIUrl":"10.1016/j.giant.2024.100351","url":null,"abstract":"<div><div>Traditional Se (selenium) fertilizers are poorly deposited on crop leaves and are easily washed away by rain; these factors limit plant Se absorption and pose potential environmental risks. To address this issue, a thermosensitive Se nanoparticles gel (CS-FA/BP-SeNPs) based on chitosan-ferulic acid (CS-FA) and <strong>β</strong>-glycerophosphate (<strong>β</strong>-BP) was developed to increase rain-washing resistance and Se uptake in grape leaves. The CS-FA derivative was synthesized via an amide reaction between chitosan and ferulic acid<sub>(1:2)</sub>; this derivative demonstrated strong antibacterial and antioxidant activity, effectively dispersing the Se nanoparticles (SeNPs) and preventing their aggregation. <strong>β</strong>-glycerophosphate neutralized the pH value of the CS-FA/SeNPs solution, significantly increasing the stability of the SeNPs (stable for 30 days). Up to 37 °C, the solution rapidly formed a hydrogel, increasing its viscous modulus by 5.1 times and improving adhesion. Compared with SeNPs alone, CS-FA/BP-SeNPs showed superior spreading, reducing droplet splashing and retraction. In simulated rainfall experiments, the CS-FA/BP-SeNPs gel coating retained 91.1 % of the material on the leaf surface, while the corresponding value for SeNPs was 13.6 %, demonstrating excellent rainfastness in the former. In open-field cultivation trials, grape leaves treated with the CS-FA/BP-SeNPs gel coating presented a 141.3–192.7 % increase in the Se retention rate and a 51.3–62.3 % increase in Se uptake than those with SeNPs alone. Additionally, CS-FA/BP-SeNPs significantly reduced <em>Fusarium oxysporum</em> infection rates, demonstrating potential for use in challenging outdoor environments. This thermosensitive gel coating provides an effective strategy for enhancing nanoselenium utilization on crop leaves through its temperature-responsive properties and strong postgelation adhesion.</div></div>","PeriodicalId":34151,"journal":{"name":"GIANT","volume":"21 ","pages":"Article 100351"},"PeriodicalIF":5.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143099038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Giant molecule acceptors for high performance polymer solar cells 用于高性能聚合物太阳能电池的巨分子受体

IF 5.4 1区化学

GIANT Pub Date : 2024-12-01 Epub Date: 2024-08-22 DOI: 10.1016/j.giant.2024.100336

Hongmei Zhuo , Beibei Qiu , Xiaojun Li , Zhi-Guo Zhang , Yongfang Li

{"title":"Giant molecule acceptors for high performance polymer solar cells","authors":"Hongmei Zhuo , Beibei Qiu , Xiaojun Li , Zhi-Guo Zhang , Yongfang Li","doi":"10.1016/j.giant.2024.100336","DOIUrl":"10.1016/j.giant.2024.100336","url":null,"abstract":"<div><p>Giant molecule acceptors (GMAs) are composed of two or more narrow bandgap small molecule acceptors (SMAs) subunits connected by conjugated or non-conjugated linking units, which possesses the advantages of the SMAs with broad absorption, appropriate electronic energy levels and fixed molecular weight (with good photovoltaic performance reproducibility), and the polymerized SMAs (PSMAs) with good film-forming property and high morphology stability and photo-stability. So that the GMAs are promising for future commercial application in polymer solar cells (PSCs). Therefore, the GMAs have attracted great attention recently. In this review, we will briefly introduce the development of the narrow bandgap SMAs, especially the A-DA’D-A structured SMAs, and the PSMAs. Then we will focus on the recent research progress of the GMAs, including the synthetic method of GMAs and the effect of number of the SMA subunits on the photovoltaic performance of the GMAs. Finally, we present our perspectives and offer a concise outlook on the further advancement of the GMAs.</p></div>","PeriodicalId":34151,"journal":{"name":"GIANT","volume":"20 ","pages":"Article 100336"},"PeriodicalIF":5.4,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666542524001000/pdfft?md5=10ab1653557cd9ed723c0a165fe256fe&pid=1-s2.0-S2666542524001000-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142087606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recycling of human teeth for piezoelectric energy harvesting 回收人类牙齿用于压电能量采集

IF 5.4 1区化学

GIANT Pub Date : 2024-12-01 Epub Date: 2024-08-13 DOI: 10.1016/j.giant.2024.100333

Yuanyuan Yin , Shuaijie Liu , Yuehui Wang , Sihan Yang , Min Ding , Xiaohui Xu , Wei Ji , Jinlin Song

{"title":"Recycling of human teeth for piezoelectric energy harvesting","authors":"Yuanyuan Yin , Shuaijie Liu , Yuehui Wang , Sihan Yang , Min Ding , Xiaohui Xu , Wei Ji , Jinlin Song","doi":"10.1016/j.giant.2024.100333","DOIUrl":"10.1016/j.giant.2024.100333","url":null,"abstract":"<div><p>In the human body, non-centrosymmetric biological structures exhibit piezoelectric effect across from microscopic biomolecular building blocks to macroscopic tissues and organs. However, the fabrication of piezoelectric devices from discarded natural tissues and organs has rarely been exploited for energy harvesting applications. Herein, the extracted human teeth were recycled as an active layer in a piezoelectric nanogenerator for power generation. Due to the piezoelectric effect of enamel and dentin, a human teeth-based sandwiched piezoelectric nanogenerator was fabricated, producing high and stable power outputs with an open-circuit voltage of approximately 0.9 V under an external force at 60 N. Furthermore, the high mechanical durability of the piezoelectric nanogenerator was also verified after 1600 pressing-and-releasing cycles without noticeable output degradation. Notably, for the first time, a light-emitting diode (LED) was illuminated by the human teeth-based piezoelectric device. This work exemplifies a sustainable strategy to recycle the extracted human teeth by fabricating a piezoelectric nanogenerator for energy harvesting, providing inspiration for converting waste into wealth toward green energy in bionanotechnology.</p></div>","PeriodicalId":34151,"journal":{"name":"GIANT","volume":"20 ","pages":"Article 100333"},"PeriodicalIF":5.4,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666542524000973/pdfft?md5=01f7c9c6d57fb30d4ca8d86951ac504c&pid=1-s2.0-S2666542524000973-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142049948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Conformation-assisted solid-solid phase transition of LiTFSI electrolyte salt and the lithium ion coordination LiTFSI 电解质盐的构象辅助固固相变与锂离子配位

IF 5.4 1区化学

GIANT Pub Date : 2024-12-01 Epub Date: 2024-07-29 DOI: 10.1016/j.giant.2024.100330

Ziwei Lai , Donglei You , Wei Wei , Huiming Xiong

{"title":"Conformation-assisted solid-solid phase transition of LiTFSI electrolyte salt and the lithium ion coordination","authors":"Ziwei Lai , Donglei You , Wei Wei , Huiming Xiong","doi":"10.1016/j.giant.2024.100330","DOIUrl":"10.1016/j.giant.2024.100330","url":null,"abstract":"<div><p>Single crystal growth and characterization of the lithium bis(trifluoromethyl sulfonyl)imide (LiTFSI), the most common electrolyte salt for lithium-ion batteries, have been performed and succeeded in unraveling the atomic structures of its different crystalline phases. The structures of two crystalline phases (phase I: orthorhombic, <em>Pccn</em>; phase II: monoclinic, <em>P2<sub>1</sub>/c</em>) have been determined through temperature-dependent X-ray crystallography of the LiTFSI single crystal on heating, and the solid-solid phase transformation between phase I and phase II has been dictated. Interestingly, a conformational change of TFSI⁻ from <em>transoid</em> to <em>cisoid</em> has been discovered during the transition from phase I to phase II, which has been further confirmed by the temperature-dependent Raman spectroscopy. The coordination of Li⁺ with the TFSI⁻ ions of different conformations has been also elucidated in the polymorphic crystalline structures. The solid-solid phase transformation of the first-order leads to the cracking of the LiTFSI crystal, probably along the lithium-ion or the fluorine-rich layer in phase II. In the molten state, the coexistence of the <em>transoid</em> conformation and the <em>cisoid</em> conformation is found in the TFSI⁻ ions, affirming the recent observation in the concentrated non-crystalline state. This work is anticipated to shed light on the (de)solvation and the transport of lithium ions in complex fluids encompassing LiTFSI electrolyte solutions from the structural aspects.</p></div>","PeriodicalId":34151,"journal":{"name":"GIANT","volume":"20 ","pages":"Article 100330"},"PeriodicalIF":5.4,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666542524000948/pdfft?md5=38487c3062ce15b1a2d2224328ea7048&pid=1-s2.0-S2666542524000948-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141931991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermal response color-tunable electroluminescent device for real-time visual temperature monitoring 用于实时视觉温度监测的热响应彩色可调电致发光装置

IF 5.4 1区化学

GIANT Pub Date : 2024-12-01 Epub Date: 2024-08-28 DOI: 10.1016/j.giant.2024.100339

Xiaohui Sun , Jiuyue Zhang , Xu Li , Xuelei Gong , Debin Kong , Linjie Zhi

{"title":"Thermal response color-tunable electroluminescent device for real-time visual temperature monitoring","authors":"Xiaohui Sun , Jiuyue Zhang , Xu Li , Xuelei Gong , Debin Kong , Linjie Zhi","doi":"10.1016/j.giant.2024.100339","DOIUrl":"10.1016/j.giant.2024.100339","url":null,"abstract":"<div><p>Alternating current electroluminescent (ACEL) devices have attracted tremendous attention due to their significant applications in bioinspired electronics, smart wearables, and human-machine interfaces. However, it still faces limitations in real-time visual temperature sensing. Herein, a universal strategy is established to achieve real-time temperature dynamic visualization by integrating a thermochromic layer through a simple spin coating procedure. Such elaborate integration permits the device to display a wide array of luminous colors and achieve high-contrast color transitions in response to ambient temperature variations. More importantly, a quantitative relationship can be established between the temperatures and the luminous color changes. This advancement not only enhances multi-color emission capabilities but also enables the display of diverse information, marking a significant stride in the development of dynamic temperature sensing in ACEL devices.</p></div>","PeriodicalId":34151,"journal":{"name":"GIANT","volume":"20 ","pages":"Article 100339"},"PeriodicalIF":5.4,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666542524001036/pdfft?md5=f2d65086e3041e0a2e41046b0682031a&pid=1-s2.0-S2666542524001036-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142122706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

3D printing of reprogrammable liquid crystal elastomers with exchangeable boronic ester bonds 具有可交换硼酸酯键的可再编程液晶弹性体的三维打印技术

IF 5.4 1区化学

GIANT Pub Date : 2024-12-01 Epub Date: 2024-07-31 DOI: 10.1016/j.giant.2024.100331

Xinzi Yu , Changyue Liu , Liqian Wang , Tianyu Li , Lingxin Yuan , Jiping Yang , Rui Xiao , Zhijian Wang

{"title":"3D printing of reprogrammable liquid crystal elastomers with exchangeable boronic ester bonds","authors":"Xinzi Yu , Changyue Liu , Liqian Wang , Tianyu Li , Lingxin Yuan , Jiping Yang , Rui Xiao , Zhijian Wang","doi":"10.1016/j.giant.2024.100331","DOIUrl":"10.1016/j.giant.2024.100331","url":null,"abstract":"<div><p>Liquid crystal elastomers (LCEs) are a kind of soft actuating materials with large reversible deformation ability, which can work as the “motor” to exhibit complex deformations and drive the locomotion of soft robots. The deformation of LCEs depends on the three-dimensional (3D) shape of whole structure and alignment patterns of mesogens. Various methods have been employed to fabricate the LCE structure with desired shapes and mesogen alignments. However, conventional 3D printed LCEs require continuous thermal energy input to maintain their actuated shapes. The LCEs cannot be reprocessed and reprogrammed once cured. Herein, we introduce dynamic boronic ester bonds into the ink, with which the printed LCE structures are capable of being reprogrammed from polydomain into monodomain state and vice versa. We further explore the effects of printing parameters and content of dynamic covalent bonds on the actuation performance and reprogramming ability. The actuated shape could be well predicted with finite element method. The dynamic printable LCEs developed here offer new strategy and large design space for LCE structures.</p></div>","PeriodicalId":34151,"journal":{"name":"GIANT","volume":"20 ","pages":"Article 100331"},"PeriodicalIF":5.4,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S266654252400095X/pdfft?md5=c994d94a82f2721a28403c1b16aa4d93&pid=1-s2.0-S266654252400095X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141963058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Binary blends of poly(lactic acid) and poly(methyl methacrylate) for high energy density and charge/discharge efficiency capacitors 用于高能量密度和充放电效率电容器的聚乳酸和聚甲基丙烯酸甲酯二元混合物

IF 5.4 1区化学

GIANT Pub Date : 2024-12-01 Epub Date: 2024-09-10 DOI: 10.1016/j.giant.2024.100340

Shuo Zhao , Le Zhou , Junshang Zhang, Yang Shen, Ce-Wen Nan

{"title":"Binary blends of poly(lactic acid) and poly(methyl methacrylate) for high energy density and charge/discharge efficiency capacitors","authors":"Shuo Zhao , Le Zhou , Junshang Zhang, Yang Shen, Ce-Wen Nan","doi":"10.1016/j.giant.2024.100340","DOIUrl":"10.1016/j.giant.2024.100340","url":null,"abstract":"<div><p>Polymer dielectrics are widely used in modern power electronics due to their high flexibility and high breakdown strength. However, the limited energy density of current polymer dielectrics limits their wider applications, and there is an urgent need to develop novel polymer dielectric materials. Poly(lactic acid) (PLA) is favored for biological applications due to its biocompatibility and biodegradability. In general, PLA has three optical isomers, namely poly(L-lactide) (PLLA), poly(D-lactide) (PDLA), and poly(DL-lactide) (PDLLA), but the investigation of their dielectric properties remains limited. In this study, a significant increase in energy storage density and charge/discharge efficiency in poly(methyl methacrylate) (PMMA) was achieved by incorporating isomers of PLA into PMMA. Experimental results indicate that the introduction of PLA creates a phase-separated structure within PMMA, and in particular, the introduction of the crystalline region significantly improved the breakdown strength (<em>E</em><sub>b</sub>). Finally, PLLA/PMMA 50/50 and PDLA/PMMA 50/50 exhibit the discharged energy densities of 8.55 J cm<sup>−3</sup> and 8.18 J cm<sup>−3</sup>, respectively, with charge/discharge efficiencies of 89.6% and 90.9%. This work enables the achievement of all-organic dielectrics with high energy storage density and high efficiency through the construction of phase-separated structures and demonstrates the great potential of biodegradable polymers in electronic devices.</p></div>","PeriodicalId":34151,"journal":{"name":"GIANT","volume":"20 ","pages":"Article 100340"},"PeriodicalIF":5.4,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666542524001048/pdfft?md5=5fdaadba5fe8c446d394f5b0099d8249&pid=1-s2.0-S2666542524001048-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142270615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Homochiral “8″-shaped nanotoroids assembled from polypeptides 由多肽组装而成的同手性 "8″形纳米多面体

IF 5.4 1区化学

GIANT Pub Date : 2024-12-01 Epub Date: 2024-10-28 DOI: 10.1016/j.giant.2024.100343

Ruiqi Jin, Yue Du, Jiaping Lin, Chunhua Cai

引用次数: 0

Generation and regularization of zigzag focal conic domains guided by thermodynamic-driven topological defect evolution 热力学驱动的拓扑缺陷演化引导之字形焦点圆锥域的生成和正则化

IF 5.4 1区化学

GIANT Pub Date : 2024-12-01 Epub Date: 2024-07-16 DOI: 10.1016/j.giant.2024.100327

Daoxing Luo , Jinbing Wu , Zhenghao Guo , Jingmin Xia , Wei Hu

{"title":"Generation and regularization of zigzag focal conic domains guided by thermodynamic-driven topological defect evolution","authors":"Daoxing Luo , Jinbing Wu , Zhenghao Guo , Jingmin Xia , Wei Hu","doi":"10.1016/j.giant.2024.100327","DOIUrl":"10.1016/j.giant.2024.100327","url":null,"abstract":"<div><p>Liquid crystals, as typical anisotropic building blocks, tend to self-assemble into various ordered architectures during distinct thermodynamic processes. Research on the underlying mechanisms and rules may drastically promote our understanding of complicated structures. Here, zigzag focal conic domains (ZFCDs) are generated in rapid cooling process under an antagonistic boundary condition. After several thermal cycles beneath the nematic-smectic (N-S) phase transition point, the ZFCDs are well regularized. We found that the dislocations associated with the rapid cooling play vital roles in the formation of ZFCDs. A strong interphase correlation between the zigzag ± 1/2 disclination pairs and ZFCDs is observed above the N-S phase transition point. The orientational order inheritance and topological invariance across the phase transition indicate that similar disclination pairs exist in ZFCDs. These disclination pairs facilitate the opposite tilt direction and a half-pitch lateral shift between neighboring focal conic domains (FCDs), thus forming ZFCDs. During thermal cycles, the thermal motion of molecules induces the regularization and elimination of defect cores, further resulting in the ordered ZFCDs. Via properly controlling the cooling rate, large-area ordered ZFCDs are achieved in a wide film thickness range after thermal cycles. This study enriches the knowledge on the topological defect guided architecture of liquid crystals and may pave the way for the generation and regularization of ordered self-assembled systems.</p></div>","PeriodicalId":34151,"journal":{"name":"GIANT","volume":"20 ","pages":"Article 100327"},"PeriodicalIF":5.4,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666542524000912/pdfft?md5=0b20fb9f8d1fcbb642826a0066127b45&pid=1-s2.0-S2666542524000912-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141695737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unraveling the nanostructures and self-assembly behavior of perfluorosulfonic acid in water/ethanol solvent: Effect of EW and side-chain chemistry 揭示全氟磺酸在水/乙醇溶剂中的纳米结构和自组装行为：EW和侧链化学性质的影响

IF 5.4 1区化学

GIANT Pub Date : 2024-12-01 Epub Date: 2024-08-13 DOI: 10.1016/j.giant.2024.100332

Jingnan Song , Suyan Wang , Wutong Zhao , Bonan Hao , Ming Zhang , Yecheng Zou , Gang Wei , Jia Liu , Guangying Chen , Huan Ren , Xuefei Wu , Xuesong Jiang , Yongfeng Zhou , Feng Liu , Yongming Zhang

{"title":"Unraveling the nanostructures and self-assembly behavior of perfluorosulfonic acid in water/ethanol solvent: Effect of EW and side-chain chemistry","authors":"Jingnan Song , Suyan Wang , Wutong Zhao , Bonan Hao , Ming Zhang , Yecheng Zou , Gang Wei , Jia Liu , Guangying Chen , Huan Ren , Xuefei Wu , Xuesong Jiang , Yongfeng Zhou , Feng Liu , Yongming Zhang","doi":"10.1016/j.giant.2024.100332","DOIUrl":"10.1016/j.giant.2024.100332","url":null,"abstract":"<div><p>The perfluorosulfonic acid (PFSA) ionomers are key materials for proton exchange membranes (PEMs) and catalyst layers (CLs). Their morphology is profoundly influenced by the chain assembly behavior of PFSA in dispersions. Hence, we combine the characterization techniques of dynamic light scattering (DLS), small-angle X-ray scattering (SAXS), and cryo-transmission electron microscopy (Cryo-TEM) to study the nanostructures of PFSA dispersions, and provide a structure model for diverse PFSA ionomers in water/ethanol solvent. It is seen that PFSA ionomers self-assembly into a rod-like particle in dilute dispersion. As the concentration increases, the primary rod aggregates gradually assemble into a swollen- or Gaussian-network structure. Beyond this feature, we see that different PFSA ionomers show different nanostructures in dispersion. For the long-side-chain (LSC) PFSA ionomers, the 800-LSC PFSA tends to form monodisperse rod-like aggregates that is in a highly ordered arrangement with a rod diameter of 3.16 nm and a length of 28.72 nm. As the equivalent weight (EW) increases to 960, the poor solubility of the main chains in water/ethanol solvents leads to the “end-to-end” assemblies of the primary rod particles and dendritic secondary aggregates. The short-side-chain (SSC) PFSA ionomer that shares the same backbone with 960-LSC PFSA exhibit remarkable mono-dispersity and ordered arrangement of rod-like aggregates in water/ethanol solvents due to the strong electrostatic repulsion.</p></div>","PeriodicalId":34151,"journal":{"name":"GIANT","volume":"20 ","pages":"Article 100332"},"PeriodicalIF":5.4,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666542524000961/pdfft?md5=03221d17c213662f544e4ccb9add7ea5&pid=1-s2.0-S2666542524000961-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142048542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

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