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Poly(3, 4-Ethylenedioxythiophene) as Promising Energy Storage Materials in Zinc-Ion Batteries. 聚(3,4-乙烯二氧噻吩)作为锌-离子电池中的储能材料前景看好。
IF 4.2 3区 化学 Q2 POLYMER SCIENCE Pub Date : 2024-10-29 DOI: 10.1002/marc.202400476
Tianyun Zhang, Jiaojiao Wu, Fen Ran

Benefiting from the advantages of high conductivity and good electrochemical stability, the conjugated conducting polymer poly (3, 4-ethylenedioxythiophene) is a promising energy storage material in zinc-ion batteries. Zinc-ion batteries have the advantages of high safety, environmental friendliness, and low cost, but suffer from unstable cathode material structure, poor electrical conductivity, and uncontrollable dendritic growth of zinc anodes. PEDOT, with its fast electrochemical response and wide potential window, is expected to make up for the shortcomings and enhance capacity and cycle life of zinc-ion batteries. Herein, in this review different polymerization methods of poly (3, 4-ethylenedioxythiophene) as well as their structure and properties are summarized; the progress in doping strategies related to the increasing conductivity and dispersivity of poly (3, 4-ethylenedioxythiophene) materials is discussed; specific applications of poly (3, 4-ethylenedioxythiophene)-based materials in anode, cathode, electrolyte, and binder of zinc-ion batteries are explored; and the representative advancements for improving the electrochemical performance of poly (3, 4-ethylenedioxythiophene) in zinc-ion batteries are emphasized. Finally, the current challenges of poly (3, 4-ethylenedioxythiophene) as promising materials in zinc-ion batteries and an insight into their future research directions are pointed out.

共轭导电聚合物聚(3,4-亚乙二氧基噻吩)具有高导电性和良好的电化学稳定性,是锌离子电池中一种前景广阔的储能材料。锌离子电池具有安全性高、环保、成本低等优点,但存在阴极材料结构不稳定、导电性差、锌阳极树枝状生长不可控等问题。PEDOT 具有快速的电化学响应和宽广的电位窗口,有望弥补上述不足,提高锌离子电池的容量和循环寿命。本综述总结了聚(3,4-亚乙二氧基噻吩)的不同聚合方法及其结构和性能,并讨论了与提高聚(3,4-亚乙二氧基噻吩)材料的导电性和分散性有关的掺杂策略的进展;探讨了基于聚(3,4-亚乙二氧基噻吩)的材料在锌离子电池的阳极、阴极、电解质和粘结剂中的具体应用;强调了改善锌离子电池中聚(3,4-亚乙二氧基噻吩)电化学性能的代表性进展。最后,指出了聚(3,4-亚乙二氧基噻吩)作为锌离子电池中的前景材料目前所面临的挑战,并对其未来的研究方向进行了展望。
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引用次数: 0
Sulfonated Covalent Organic Frameworks Anchoring Cobalt as High-Efficient and Stable Catalysts for Peroxymonosulfate Activation. 磺化共价有机框架锚定钴作为高效稳定的过一硫酸盐活化催化剂。
IF 4.2 3区 化学 Q2 POLYMER SCIENCE Pub Date : 2024-10-28 DOI: 10.1002/marc.202400533
Xinke Zhang, Yutong Li, Fengliang Cao, Xiaohui Sun, Zhihan Jin, Song Xue, Manfred Wagner, Linjie Zhi

Heterogeneous cobalt-based catalysts are highly effective in activing peroxymonosulfate (PMS) and produce free radicals to deal with recalcitrant organic pollutants in water. However, unfeasible recyclability and gradual performance degradation remain challenging due to the easy agglomeration and leaching of active cobalt species. Herein, a strategy is proposed to construct stably anchored and highly dispersed Co2+ sites on dual functional sulfonated covalent organic frameworks (COF-Co). The sulfonic acid groups are able to realize the targeted binding with cobalt ions through a two-step cation-exchange method, leading to strong combination with active Co2+ sites and utmost utilization efficiencies. Moreover, the super-hydrophility of sulfonic acid groups favors the rapid accessibility of organic molecules to the catalyst and accelerates the degradation. Remarkably, COF-Co exhibits high activity in PMS activation, effective oxidation for tetracycline degradation (92% within 30 min at 30 mg L-1) and other coloring contaminants, and excellent recycle stability. This work can guide the rational design of efficient and environmentally friendly PMS-activated catalyst with great potential for application in wastewater treatment.

异相钴基催化剂在过硫酸盐(PMS)活性和产生自由基方面非常有效,可用于处理水中的难降解有机污染物。然而,由于活性钴物种容易团聚和沥滤,其不可行的可回收性和逐渐退化的性能仍然具有挑战性。本文提出了一种在双功能磺化共价有机框架(COF-Co)上构建稳定锚定且高度分散的 Co2+ 位点的策略。磺酸基团能够通过两步阳离子交换法实现与钴离子的定向结合,从而与活性 Co2+ 位点强强联合,达到最高的利用效率。此外,磺酸基团的超亲水性有利于有机分子快速进入催化剂并加速降解。值得注意的是,COF-Co 在活化 PMS 方面表现出很高的活性,能有效氧化降解四环素(在 30 mg L-1 的条件下,30 分钟内降解 92%)和其他着色污染物,并具有出色的回收稳定性。这项工作可指导合理设计高效、环保的 PMS 活性催化剂,在废水处理中具有巨大的应用潜力。
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引用次数: 0
Glaser-Hay-Coupled Random Copolymers Containing Boron Difluoride Formazanate Dyes. 含二氟化硼甲臢染料的 Glaser-Hay-Coupled 无规共聚物。
IF 4.2 3区 化学 Q2 POLYMER SCIENCE Pub Date : 2024-10-27 DOI: 10.1002/marc.202400786
Erin L Cotterill, Yasmeen Jaberi, Jasveer S Dhindsa, Paul D Boyle, Joe B Gilroy

𝜋-Conjugated polymers, including those based on acetylenic repeating units, are an exciting class of materials that offer narrow optical band gaps and tunable frontier orbital energies that lead to their use in organic electronics. This work expands the knowledge of structure-property relationships of acetylenic polymers through the synthesis and characterization of a series of Glaser-Hay-coupled model compounds and random copolymers comprised of BF2 formazanate, fluorene, and/or bis(alkoxy)benzene units. The model compounds and copolymers synthesized exhibit redox activity associated with the reversible reduction of the BF2 formazanate units and the irreversible reduction of the fluorene and bis(alkoxy)benzene units. The copolymers exhibit absorption profiles characteristic or intermediate of their respective models and homopolymers, leading to broad absorption of UV-vis light. The alkyne linkages of the model compounds and copolymers are reacted with [Co2(CO)8] to convert the alkyne functional groups into cobalt carbonyl clusters. This transformation leads to blue-shifted absorption profiles due to a decrease in π-conjugation, demonstrating the ability to tune the properties of these materials through post-polymerization functionalization. The redox activity and broad absorption bands of the polymers reported make them excellent candidates for use in photovoltaics and other light-harvesting applications.

𝜋共轭聚合物(包括基于乙炔重复单元的聚合物)是一类令人兴奋的材料,具有窄光学带隙和可调前沿轨道能量,可用于有机电子学。这项研究通过合成和表征一系列格拉塞-海耦合模型化合物以及由 BF2 甲酰肼、芴和/或双(烷氧基)苯单元组成的无规共聚物,拓展了对乙炔聚合物结构-性质关系的认识。合成的模型化合物和共聚物显示出与 BF2 甲氮酸盐单元的可逆还原以及芴和双(烷氧基)苯单元的不可逆还原有关的氧化还原活性。共聚物显示出各自模型和均聚物特有的或中间的吸收曲线,对紫外-可见光有广泛的吸收。模型化合物和共聚物的炔链与 [Co2(CO)8] 发生反应,将炔官能团转化为羰基钴簇。由于π-共轭作用减弱,这种转化导致了蓝移吸收曲线,证明了通过聚合后官能化调整这些材料特性的能力。所报道聚合物的氧化还原活性和宽广的吸收带使其成为光伏和其他光收集应用的绝佳候选材料。
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引用次数: 0
Green Advances in Wet Finishing Methods and Nanoparticles for Daily Textiles. 用于日用纺织品的湿整理方法和纳米粒子的绿色进展。
IF 4.2 3区 化学 Q2 POLYMER SCIENCE Pub Date : 2024-10-27 DOI: 10.1002/marc.202400636
Antonella Patti

This work presented an overview of greener technologies for realizing everyday fabrics with enhanced antibacterial activity, flame retardancy, water repellency, and UV protection. Traditional methods for improving these qualities in textiles involved dangerous chemicals, energy and water-intensive procedures, harmful emissions. New strategies are presented in response to the current emphasis on process and product sustainability. Nanoparticles (NPs) are suggested as a potential alternative for hazardous components in textile finishing. NPs are found to efficiently decrease virus transmission, limit combustion events, protect against UV radiation, and prevent water from entering, through a variety of mechanisms. Some attempts are made to increase NPs efficiency and promote long-term adherence to textile surfaces. Traditional wet finishing methods are implemented through a combination of advanced green technologies (plasma pre-treatment, ultrasound irradiations, sol-gel, and layer-by-layer self-assembly methods). The fibrous surface is activated by adding functional groups that facilitate NPs grafting on the textile substrate by basic interactions (chemical, physical, or electrostatic), also indirectly via crosslinkers, ligands, or coupling agents. Finally, other green options explore the use of NPs synthesized from bio-based materials or hybrid combinations, as well as inorganic NPs from green synthesis to realize ecofriendly finishing able to provide durable and protective fabrics.

这项工作概述了实现具有更强抗菌活性、阻燃、防水和防紫外线功能的日常织物的绿色技术。提高纺织品这些品质的传统方法涉及危险化学品、高能耗和高耗水程序以及有害排放物。针对当前对工艺和产品可持续性的重视,我们提出了新的策略。纳米粒子(NPs)被认为是纺织品整理中危险成分的潜在替代品。研究发现,纳米粒子可通过多种机制有效减少病毒传播、限制燃烧事件、抵御紫外线辐射和防止水分进入。为了提高 NPs 的效率并促进其在纺织品表面的长期附着力,人们进行了一些尝试。传统的湿整理方法是通过结合先进的绿色技术(等离子预处理、超声辐照、溶胶-凝胶和逐层自组装方法)来实现的。通过添加功能基团激活纤维表面,这些功能基团可通过基本相互作用(化学、物理或静电),也可通过交联剂、配体或偶联剂间接促进 NPs 接枝到纺织品基材上。最后,其他绿色方案还探索使用由生物基材料或混合材料合成的 NPs,以及绿色合成的无机 NPs,以实现生态友好型整理,提供耐用的保护性织物。
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引用次数: 0
Multi-Responsive Polymer Nanoparticles: A Versatile Platform for Double-Security Anticounterfeiting and Smart Food Packaging. 多反应聚合物纳米粒子:双重安全防伪和智能食品包装的多功能平台。
IF 4.2 3区 化学 Q2 POLYMER SCIENCE Pub Date : 2024-10-26 DOI: 10.1002/marc.202400561
Hossein Alidaei-Sharif, Milad Babazadeh-Mamaqani, Moein Mohammadi-Jorjafki, Hossein Roghani-Mamaqani, Mehdi Salami-Kalajahi

Potential applications of colloidal polymer nanoparticles in the preparation of smart inks are investigated by physical incorporation of the oxazolidine molecules. Precise adjusting the polymer chain flexibility and polarity is achieved by controlling the ratio of methyl methacrylate and butyl acrylate monomers in the polymerization reaction. In addition, nanofibrous indicators of acid-base vapors are prepared from the latex nanoparticles. This can be beneficial for creating materials that sense and respond to environmental changes, such as humidity or moisture and acidity. Thermochromic inks are prepared by microencapsulating crystal violet lactone dye (CVL) in polymer matrices to prevent their release into the aqueous media. Combining two distinct systems with varying triggers, such as light and temperature, provides an effective strategy for double-encryption anticounterfeiting and crack and scratch detection and indication applications. Preparing labels impregnated with double-responsive inks, a novel approach is developed for food spoilage detection and preservation indication. Labels are manufactured using polymer nanoparticles, which contain photoluminescent oxazolidine molecules, as well as a trinary mixture of CVL within core-shell latex particles as the thermochromic dye. The combination of these two responsive elements transforms traditional packaging into a dynamic and interactive sentinel for the food it holds.

通过草唑烷分子的物理结合,研究了胶体聚合物纳米粒子在制备智能油墨中的潜在应用。通过控制聚合反应中甲基丙烯酸甲酯和丙烯酸丁酯单体的比例,实现了聚合物链柔性和极性的精确调节。此外,还利用乳胶纳米颗粒制备了酸碱蒸汽的纳米纤维指示剂。这有利于制造能够感知和响应环境变化(如湿度或水分和酸度)的材料。热致变色油墨的制备方法是在聚合物基质中微囊化水晶紫内酯染料(CVL),以防止其释放到水介质中。将两种不同的系统与不同的触发器(如光和温度)相结合,为双加密防伪以及裂纹和划痕检测和指示应用提供了一种有效的策略。制备浸渍了双响应油墨的标签,为食品变质检测和保存指示开发了一种新方法。标签是用聚合物纳米颗粒制造的,其中含有光致发光的恶唑烷分子,以及作为热致变色染料的核壳乳胶颗粒中的 CVL 三元混合物。这两种反应元素的结合将传统包装转变为一种动态的互动式食品包装。
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引用次数: 0
A Facile Method in Fabricating Flexible Conductive Composites with Large-Size Segregated Structures for Electromagnetic Interference Shielding. 制造具有大尺寸分段结构的柔性导电复合材料以屏蔽电磁干扰的简便方法。
IF 4.2 3区 化学 Q2 POLYMER SCIENCE Pub Date : 2024-10-26 DOI: 10.1002/marc.202400585
Liang He, Yang Chen, Xiaoming Shao, Qiyuan Yao, Ding Feng, Lijie Yin, Wencai Wang

To resist the plastic deformation of polymer particles during hot press molding, high molecular weights, and moduli are required for composites with segregated structures, thus the prepared composites exhibit poor flexibility. Also, larger particle sizes can bring lower percolation thresholds while the ensuing greater deformation destroys the conductive network. Moreover, segregated composites still face preparation complexities. Herein, a facile method for developing flexible composites with large-size segregated structures is proposed. First, silver-coated polydopamine-modified reduced graphene oxide (Ag@PrGO), as conductive fillers, is prepared by electroless plating. Next, polydimethylsiloxane (PDMS)-coated polyolefin elastomer (POE) beads are put into a bag containing the fillers. After a simple shaking, the fillers are adhered to the POE surface as the cohesive property of cured PDMS. Finally, flexible composites with large-size segregated structures are obtained via hot pressing. Benefiting from the 2D structure of the Ag@PrGO and the ability to slip, the conductive networks possess adaptable deformability. The prepared composites exhibit excellent electrical conductivity (203.55 S cm-1) at filler volume fractions of 3.4 vol%. The EMI shielding effectiveness can reach 70 dB in the X-band at a thickness of 1.9 mm and remains stable after bending and rubbing damage. This work paves the way for constructing large-size segregated structures.

为了在热压成型过程中抵抗聚合物颗粒的塑性变形,具有离析结构的复合材料需要较高的分子量和模量,因此制备的复合材料柔韧性较差。此外,较大的颗粒尺寸会降低渗流阈值,而随之而来的较大变形会破坏导电网络。此外,离析复合材料仍然面临着复杂的制备问题。本文提出了一种开发具有大尺寸离析结构的柔性复合材料的简便方法。首先,通过无电解电镀制备出银涂层聚多巴胺改性还原氧化石墨烯(Ag@PrGO)作为导电填料。然后,将涂有聚二甲基硅氧烷(PDMS)的聚烯烃弹性体(POE)珠子放入装有填料的袋子中。经过简单的摇晃,填料就会利用固化 PDMS 的内聚性粘附在 POE 表面。最后,通过热压获得具有大尺寸分离结构的柔性复合材料。得益于 Ag@PrGO 的二维结构和滑移能力,导电网络具有可适应的变形能力。所制备的复合材料在填料体积分数为 3.4 vol% 时具有优异的导电性(203.55 S cm-1)。厚度为 1.9 毫米时,X 波段的电磁干扰屏蔽效果可达 70 dB,并且在弯曲和摩擦损伤后仍能保持稳定。这项研究为建造大尺寸隔离结构铺平了道路。
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引用次数: 0
Polymerization-Induced Self-Assembly for the Synthesis of Polyisoprene-Polystyrene Block and Random Copolymers: Towards High Molecular Weight and Conversion. 聚合诱导自组装合成聚异戊二烯-聚苯乙烯嵌段和无规共聚物:实现高分子量和高转化率。
IF 4.2 3区 化学 Q2 POLYMER SCIENCE Pub Date : 2024-10-26 DOI: 10.1002/marc.202400727
Maryam Moradi, Prokopios Georgopanos

In this study, reversible addition-fragmentation chain- transfer (RAFT) polymerization combined with the polymerization-induced self-assembly (PISA) technique is used to synthesize polyisoprene (PI)-based block and random copolymers with polystyrene (PS), aiming for high molecular weight and monomer conversion. The focus is to optimize the polymerization conditions to overcome the existing challenge of cross-linking and Diels-Alder reactions during the polymerization of isoprene, which typically constrain the reaction conversion and molecular weight of the final polymers. Using a poly(methacrylic acid) (PMAA) macroRAFT agent synthesized in ethanol at 80 °C, random and block copolymers of PS-PI with a target molecular weight of 50 000 g mole-1 and a high monomer conversion of ≈80% are achieved under optimized conditions in water-emulsion at 35 °C. 1H nuclear magnetic resonance (NMR) verified the successful synthesis as well as the high content of 1,4 microstructure in polyisoprene. The thermal analysis via differential scanning calorimetry indicated distinct glass transitions for the microphase-separated PI-PS block copolymer, while a single transition for PI-PS random copolymer, indicating no microphase separation. Furthermore, dynamic light scattering analysis together with transmission electron microscopy provided further insight into the self-assembled emulsion nanoparticles of the polymers indicating a particle size in the range 70 to 130 nm.

本研究采用可逆加成-碎片链转移(RAFT)聚合与聚合诱导自组装(PISA)技术相结合的方法,合成聚异戊二烯(PI)与聚苯乙烯(PS)的嵌段和无规共聚物,旨在获得高分子量和单体转化率。重点是优化聚合条件,以克服异戊二烯聚合过程中交联和 Diels-Alder 反应带来的挑战,这些反应通常会限制最终聚合物的反应转化率和分子量。利用在 80 °C乙醇中合成的聚(甲基丙烯酸)(PMAA)大 RFT 剂,在 35 °C水乳液中的优化条件下,实现了 PS-PI 的无规和嵌段共聚物,其目标分子量为 50 000 克摩尔-1,单体转化率高达≈80%。1H 核磁共振(NMR)证实了合成的成功以及聚异戊二烯中 1,4 微结构的高含量。通过差示扫描量热仪进行的热分析表明,微相分离的 PI-PS 嵌段聚合物有明显的玻璃化转变,而 PI-PS 无规共聚物只有一个转变,表明没有微相分离。此外,动态光散射分析和透射电子显微镜进一步揭示了聚合物自组装乳液纳米颗粒的情况,表明其粒径在 70 至 130 纳米之间。
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引用次数: 0
Fabrication of Zinc(II) Mediated Poly(Acrylamide Co Acrylic Acid) Hydrogel with Thixotropic and Tribological Properties. 制备具有触变性和摩擦学特性的锌(II)介导聚丙烯酰胺-丙烯酸水凝胶。
IF 4.2 3区 化学 Q2 POLYMER SCIENCE Pub Date : 2024-10-26 DOI: 10.1002/marc.202400670
Paresh Nageshwar, Suraj W Wajge, Gopal Lal Dhakar, Avinash A Thakre, Swapnil Tripathi, Shiva Singh, Pradip K Maji, Chayan Das

Hydrogels have emerged as promising candidates for biomedical applications, such as replacing natural articular cartilage, owing to their unique viscoelastic properties. However, sufficient mechanical properties, self-healing ability, and adhesive nature are some issues limiting its application window. Here, a facile one-pot synthesis of dual cross-linked zinc-coordinated copolymer hydrogels is presented. The network structure of the copolymer hydrogels is strategically developed via dynamic and reversible physical cross-linking by Zn2+ ions and simultaneous covalent cross-linking through a covalent cross-linker viz methylene bisacrylamide. Fourier-transform infrared (FTIR), X-ray diffraction (XRD) scanning electron microscopy (SEM), and Brunauer-Emmett-Teller (BET) analysis have thoroughly characterized the structure of the synthesized hydrogels. The introduction of Zn2+ offers dynamic and reversible complexation, leading to excellent mechanical properties and self-healing features. Moreover, the percentage of the equilibrium water content of zinc-coordinated copolymer hydrogel samples is comparable with that of natural articular cartilage. The Shear sliding study shows the dominant adhesive behavior of HGel-Zn(NO3)2 sample compared to the parent HGel sample. This facile dual cross-linked hydrogel, HGel-Zn(NO3)2, with a combination of good mechanical properties, efficient self-recovery, adequate water content, and favorable adhesive nature, seems very promising to mimic the articular cartilage.

水凝胶因其独特的粘弹性能,已成为生物医学应用(如替代天然关节软骨)的理想候选材料。然而,足够的机械性能、自愈合能力和粘合性等问题限制了水凝胶的应用。本文介绍了双交联锌配位共聚物水凝胶的简单单锅合成方法。共聚物水凝胶的网络结构是通过 Zn2+ 离子的动态可逆物理交联和共价交联剂(即亚甲基双丙烯酰胺)的同步共价交联而形成的。傅立叶变换红外光谱(FTIR)、X 射线衍射(XRD)、扫描电子显微镜(SEM)和布鲁纳尔-艾美特-泰勒(BET)分析彻底确定了合成水凝胶的结构特征。Zn2+ 的引入提供了动态和可逆的络合,带来了优异的机械性能和自愈合特性。此外,锌配位共聚物水凝胶样品的平衡含水量百分比与天然关节软骨相当。剪切滑动研究表明,与母体 HGel 样品相比,HGel-Zn(NO3)2 样品的粘附行为占主导地位。HGel-Zn(NO3)2 这种简便的双交联水凝胶具有良好的机械性能、高效的自我恢复能力、充足的含水量和有利的粘附性,似乎很有希望模拟关节软骨。
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引用次数: 0
Uncovering Integrated Dual-State ESIPT-Conductivity, Redox-Capacity, and Opto-Electronic Responses Toward Hg(II)/ Cr(III) of Aliphatic Fluorescent Polymers. 揭示脂肪族荧光聚合物对汞(II)/铬(III)的综合双态 ESIPT-电导率、氧化还原能力和光电响应。
IF 4.2 3区 化学 Q2 POLYMER SCIENCE Pub Date : 2024-10-26 DOI: 10.1002/marc.202400677
Md Hussain Sanfui, Nadira Hassan, Shrestha Roy, Deepak Chowdhury, Preetam Nandy, Mincheol Chang, Mostafizur Rahaman, Narendra Nath Ghosh, Swapan Majumdar, Pijush Kanti Chattopadhyay, Dilip K Maiti, Nayan Ranjan Singha

Excited-state intramolecular proton transfer (ESIPT)-associated dual-state emissive aliphatic dual-light emitting conducting polymers (DLECPs) having oxidation-reduction capacities are prepared polymerizing 2-acrylamido-2-methylpropane-1-sulfonic acid, methacrylic acid, and 2-methyl-3-(N-(2-methyl-1-sulfopropan-2-yl)acrylamido)propanoic acid monomers. Of as-synthesized DLECPs, nuclear magnetic resonance (NMR) and Fourier transform infrared (FTIR) spectroscopies, fluorescent enhancements (I/I0), and computational investigation indicate intriguing photophysical features in DLECP3 (optimum composition). In DLECP3, ─CONH─, ─CON<, and ─COOH subluminophores are recognized by density-functional theory (DFT)/time-dependent-DFT calculations and experimental investigations. ESIPT-associated dual-state emission/conductivity, aggregation-enhanced emissions, selective opto-electronic responses toward Hg(II)/Cr(III) at 437/574 nm, and redox properties of DLECP3 are supported by solid-state/solution spectroscopies, time-correlated single photon counting (TCSPC) measurements, dual-state excitation dependent emissions, microscopic images, electrochemical measurements, and DFT calculations. Here, preferential interaction of Hg(II)/Cr(III) with DLECP3 (amide)/DLECP3 (imidol) and reduction/oxidation of Hg(II)/Cr(III) to Hg(I)/Cr(VI) are substantiated by UV-vis, FTIR, and X-ray photoelectron spectroscopies; TCSPC measurements; NMR-titration; electrochemical studies; alongside computational calculations. The proton-electrical conductivities of DLECP3, Hg(II/I)-DLECP3, and Cr(III/VI)-DLECP3 in solids/solutions are 15.27 × 10-5/6.16 × 10-5, 19.60 × 10-5/25.52 × 10-5, and 26.69 × 10-5/27.60 × 10-5 S cm-1, respectively.

通过聚合 2-丙烯酰胺基-2-甲基丙烷-1-磺酸、甲基丙烯酸和 2-甲基-3-(N-(2-甲基-1-磺丙烷-2-基)丙烯酰胺基)丙酸单体,制备了具有氧化还原能力的激发态分子内质子转移(ESIPT)相关双态发光脂肪族双发光导电聚合物(DLECPs)。在合成的 DLECPs 中,核磁共振(NMR)和傅立叶变换红外光谱(FTIR)、荧光增强(I/I0)和计算研究表明,DLECP3(最佳成分)具有耐人寻味的光物理特征。在 DLECP3 中,-CONH─、-CON-5/6.16 × 10-5、19.60 × 10-5/25.52 × 10-5 和 26.69 × 10-5/27.60 × 10-5 S cm-1。
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引用次数: 0
Review on Biodegradable Aliphatic Polyesters: Development and Challenges. 生物降解脂肪族聚酯综述:发展与挑战。
IF 4.2 3区 化学 Q2 POLYMER SCIENCE Pub Date : 2024-10-24 DOI: 10.1002/marc.202400475
Nur Asnani Asri, Nur Atirah Afifah Sezali, Hui Lin Ong, Mohd Hanif Mohd Pisal, Ye Heng Lim, Jian Fang

Biodegradable polymers are gaining attention as alternatives to non-biodegradable plastics to address environmental issues. With the rising global demand for plastic products, the development of non-toxic, biodegradable plastics is a significant topic of research. Aliphatic polyester, the most common biodegradable polyester, is notable for its semi-crystalline structure and can be synthesized from fossil fuels, microbial fermentation, and plants. Due to great properties like being lightweight, biodegradable, biocompatible, and non-toxic, aliphatic polyesters are used in packaging, medical, agricultural, wearable devices, sensors, and textile applications. The biodegradation rate, crucial for biodegradable polymers, is discussed in this review as it is influenced by their structural properties and environmental conditions. This review discusses currently available biodegradable polyesters, their emerging applications, and the challenges in their commercialization. As research in this area grows, this review emphasizes the innovation in biodegradable aliphatic polyesters and their role in advancing environmental sustainability.

可生物降解聚合物作为不可生物降解塑料的替代品,越来越受到人们的关注,以解决环境问题。随着全球对塑料产品需求的不断增长,开发无毒、可生物降解塑料成为一个重要的研究课题。脂肪族聚酯是最常见的生物可降解塑料,其显著特点是具有半晶体结构,可从化石燃料、微生物发酵和植物中合成。由于脂肪族聚酯具有重量轻、可生物降解、生物相容性好和无毒等优良特性,因此被广泛应用于包装、医疗、农业、可穿戴设备、传感器和纺织品等领域。生物降解率对可生物降解聚合物至关重要,本综述将讨论生物降解率受其结构特性和环境条件的影响。本综述讨论了目前可用的可生物降解聚酯、其新兴应用以及商业化过程中面临的挑战。随着该领域研究的不断深入,本综述强调了可生物降解脂肪族聚酯的创新及其在促进环境可持续性方面的作用。
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引用次数: 0
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Macromolecular Rapid Communications
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