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学者姓名:吕晓林
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The rich phase behavior of block copolymers (BCPs) has drawn great attention in recent years. However, the double diamond (DD) phase is rarely obtained because of the competition between the minimization of interfacial energy and packing frustration. Here, a rod-coil BCP containing mesogen-jacketed liquid crystalline polymer is designed to acquire ordered bicontinuous network nanostructures. The reduction of internal energy originating from the orientational interaction among the rod blocks can compensate for the free energy penalty of packing frustration to stabilize the DD structure. The resulting BCP can also experience lamellae-to-DD and double gyroid-to-lamellae transitions by changing the annealing temperature. These results make the rod-coil BCP an excellent candidate for the self-assembly of ordered network structures, demonstrating great potential in nanopatterning and metamaterials. © Chinese Chemical Society Institute of Chemistry, Chinese Academy of Sciences 2024.
Keyword :
Block copolymers Block copolymers Free energy Free energy Liquid crystals Liquid crystals
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GB/T 7714 | Lyu, Xiao-Lin , Yang, Shi-Chu , Xiao, An-Qi et al. Ordered Bicontinuous Network Structures Regulated by Orientational Interactions in a Rod-Coil Block Copolymer [J]. | Chinese Journal of Polymer Science (English Edition) , 2024 , 42 (5) : 636-642 . |
MLA | Lyu, Xiao-Lin et al. "Ordered Bicontinuous Network Structures Regulated by Orientational Interactions in a Rod-Coil Block Copolymer" . | Chinese Journal of Polymer Science (English Edition) 42 . 5 (2024) : 636-642 . |
APA | Lyu, Xiao-Lin , Yang, Shi-Chu , Xiao, An-Qi , Hou, Ping-Ping , Zhang, Wei , Pan, Hong-Bing et al. Ordered Bicontinuous Network Structures Regulated by Orientational Interactions in a Rod-Coil Block Copolymer . | Chinese Journal of Polymer Science (English Edition) , 2024 , 42 (5) , 636-642 . |
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Polymer ionic conductors have shown great promise as iontronic sensors for flexible wearable devices and intelligent machines. A series of exquisitely designed hydrogels, ionogels, and ionic elastomers have good mechanical properties, such as super stretchability and high elasticity. However, most gels tend to exhibit softening or linear mechanoresponsive behavior when subjected to stress, which is completely different from the strain-stiffening behavior of the biological tissues. Therefore, designing polymer ionic conductors with good mechanical properties and strain-stiffening ability remains a challenge, which is critical in improving the reliability and durability of iontronic sensing. Here, we propose a strong/weak ionic interaction strategy to develop poly(ionic liquid) elastomers (PILEs) through the copolymerization of imidazolium ionic liquid monomers and acrylate monomers. The design allows weak ionic interactions to impart softness to the polymer network, while strong ionic interactions stiffen the network during stretching. The resulting transparent PILE possesses ultrastretchability, immense strain stiffening, good elasticity, high toughness, and puncture resistance. The PILE also shows antibacterial ability and good adhesion due to high-content charge groups in the polymer network. These combined properties make the PILE an excellent candidate for iontronic sensors, with excellent stability and sensitivity to temperature and strain, demonstrating great potential in wearable devices and human-machine interfaces.
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GB/T 7714 | Yu, Li , Huang, Chunzhi , Gong, Yue et al. Ultrastretchable and Tough Poly(ionic liquid) Elastomer with Strain-Stiffening Ability Enabled by Strong/Weak Ionic Interactions [J]. | MACROMOLECULES , 2024 , 57 (5) : 2339-2350 . |
MLA | Yu, Li et al. "Ultrastretchable and Tough Poly(ionic liquid) Elastomer with Strain-Stiffening Ability Enabled by Strong/Weak Ionic Interactions" . | MACROMOLECULES 57 . 5 (2024) : 2339-2350 . |
APA | Yu, Li , Huang, Chunzhi , Gong, Yue , Zheng, Shixiang , Zhou, Piaopiao , Zhang, Xuan et al. Ultrastretchable and Tough Poly(ionic liquid) Elastomer with Strain-Stiffening Ability Enabled by Strong/Weak Ionic Interactions . | MACROMOLECULES , 2024 , 57 (5) , 2339-2350 . |
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Ion-conductive elastomers have emerged as ideal candidates for ionic skin and wearable devices due to their intrinsic stretchability and excellent electrical properties. Despite continuous efforts in this field, strain-stiffening, robust yet compliant ionic elastomers are still unattainable due to the limited intermolecular interactions, restricting their reliability and durability in practical applications. Inspired by the interwoven collagen fiber network and synergistic non-covalent interaction in the dermis, an immense strain-stiffening, ultra-stretchable, highly tough, and elastic ionic elastomer are reported by introducing the metal-oxygen interactions into the highly entangled network. The ionic elastomers also show intriguing self-healing ability, high adhesion, and environmental tolerance, contributed by the dynamic synergistic noncovalent interactions. The prepared ionic skin displays sensitive and stable responses to temperature and strain. This work demonstrates a new design strategy for fabricating high-performance ionic elastomers with excellent mechanical and electrical properties, showing great prospects in wearable and flexible devices. A strain-stiffening, robust yet compliant ionic elastomer is prepared by simulating the structure of the dermis. The ionic elastomer possesses immense strain-stiffening ability, ultra-stretchability, high elasticity, high toughness, self-healing ability, good adhesion, and environmental tolerance, which can realize human motion detection and temperature sensing. image
Keyword :
compliant compliant ionic elastomer ionic elastomer self-healing self-healing strain-stiffening strain-stiffening tough tough
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GB/T 7714 | Zhou, Piaopiao , Zhan, Weiqing , Shen, Shengtao et al. Strain-Stiffening, Robust yet Compliant Ionic Elastomer from Highly Entangled Polymer Networks and Metal-Oxygen Interactions [J]. | ADVANCED FUNCTIONAL MATERIALS , 2024 , 34 (38) . |
MLA | Zhou, Piaopiao et al. "Strain-Stiffening, Robust yet Compliant Ionic Elastomer from Highly Entangled Polymer Networks and Metal-Oxygen Interactions" . | ADVANCED FUNCTIONAL MATERIALS 34 . 38 (2024) . |
APA | Zhou, Piaopiao , Zhan, Weiqing , Shen, Shengtao , Zhang, Hui , Zou, Zhigang , Lyu, Xiaolin . Strain-Stiffening, Robust yet Compliant Ionic Elastomer from Highly Entangled Polymer Networks and Metal-Oxygen Interactions . | ADVANCED FUNCTIONAL MATERIALS , 2024 , 34 (38) . |
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Controlling the internal structure of block copolymer (BCP) particles has a significant influence on its functionalities. Here, a structure-controlling method is proposed to regulate the internal structure of BCP Janus colloidal particles using different surfactants. Different microphase separation processes take place in two connected halves of the Janus particles. An order-order transition between gyroid and lamellar phases is observed in polymeric colloids. The epitaxial growth during the structural transformation from gyroid to lamellar phase undergoes a two-layered rearrangement to accommodate the interdomain spacing mismatch between these two phases. This self-assembly behavior can be ascribed to the preferential wetting of BCP chains at the interface, which can change the chain conformation of different blocks. The Janus colloidal particles can further experience a reversible phase transition by restructuring the polymer particles under solvent vapor. It is anticipated that the new phase behavior found in Janus particles can not only enrich the self-assembly study of BCPs but also provide opportunities for various applications based on Janus particles with ordered structures. The ratio of dual surfactants is adjusted to control the formation of Janus particles with lamellar and gyroid structures. The transformation from gyroid to lamellae undergoes an epitaxial growth process. The Janus particles can be further restructured into the gyroid or lamellar structure under solvent vapor.image
Keyword :
block copolymer block copolymer emulsion emulsion gyroid gyroid liquid crystalline polymer liquid crystalline polymer self-assembly self-assembly
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GB/T 7714 | Huang, Chunzhi , Zhang, Xinyue , Lyu, Xiaolin . Encounter between Gyroid and Lamellae in Janus Colloidal Particles Self-Assembled by a Rod-Coil Block Copolymer [J]. | MACROMOLECULAR RAPID COMMUNICATIONS , 2024 , 45 (8) . |
MLA | Huang, Chunzhi et al. "Encounter between Gyroid and Lamellae in Janus Colloidal Particles Self-Assembled by a Rod-Coil Block Copolymer" . | MACROMOLECULAR RAPID COMMUNICATIONS 45 . 8 (2024) . |
APA | Huang, Chunzhi , Zhang, Xinyue , Lyu, Xiaolin . Encounter between Gyroid and Lamellae in Janus Colloidal Particles Self-Assembled by a Rod-Coil Block Copolymer . | MACROMOLECULAR RAPID COMMUNICATIONS , 2024 , 45 (8) . |
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Hydrogel thermocells possess great potential in the energy conversion field as they directly absorb waste heat from the environment to drive redox reactions for continuous electricity generation. However, achieving high toughness and good elasticity simultaneously in hydrogel thermocells remains a challenge because of the inherent contradiction of energy dissipation mechanisms, severely limiting their practical applications and lifespan. To address this, a skin-like hydrogel network with a highly dense interwoven network is developed to construct hydrogel thermocells with good elasticity and high toughness. The dense network structure can effectively disperse the stress and hinder crack propagation, thus breaking the contradiction between high toughness and good elasticity. The thermocell realizes a toughness of 460 J m−2 while reaching an elastic limit strain of 350 %, far exceeding the elasticity of previous stretchable hydrogel thermocells. Meanwhile, it exhibits ultra-low hysteresis and excellent fatigue resistance under tensile and compressive cyclic loads. Moreover, the thermocell can work stably over long periods, enabling stable voltage output even under compression, bending, and stretching. In addition, the thermocell can power the LED lamp and calculator, and can also be connected in series to form large arrays, thus rendering it an ideal power source for wearable devices. © 2024 Elsevier B.V.
Keyword :
Ductile fracture Ductile fracture Elasticity Elasticity Electric loads Electric loads Energy dissipation Energy dissipation Energy utilization Energy utilization Hydrogels Hydrogels Redox reactions Redox reactions Waste heat Waste heat Wearable technology Wearable technology
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GB/T 7714 | Lyu, Xiaolin , Lin, Ziqing , Huang, Chunzhi et al. Tough and elastic hydrogel thermocells for heat energy utilization [J]. | Chemical Engineering Journal , 2024 , 493 . |
MLA | Lyu, Xiaolin et al. "Tough and elastic hydrogel thermocells for heat energy utilization" . | Chemical Engineering Journal 493 (2024) . |
APA | Lyu, Xiaolin , Lin, Ziqing , Huang, Chunzhi , Zhang, Xinyue , Lu, Yang , Luo, Zhong-Zhen et al. Tough and elastic hydrogel thermocells for heat energy utilization . | Chemical Engineering Journal , 2024 , 493 . |
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Highly stretchable and conductive ionogels have greatpotentialin flexible electronics and soft robotic skins. However, current ionogelsare still far from being able to accurately duplicate the mechanicallyresponsive behavior of real human skin. Furthermore, durable roboticskins that are applicable under harsh conditions are still lacking.Herein, a strong noncovalent interaction, ionic clusters, is combinedwith hydrogen bonds to obtain a physically cross-linked ionogel (PCI).Benefiting from the strong ionic bonding of the ionic cluster, thePCI shows strain-stiffening behavior similar to that of human skin,thus enabling it to have a perception-strengthening ability. Additionally,the strong ionic clusters can also ensure the PCI remains stable athigh temperatures. Even when the temperature is raised to 200 & DEG;C,the PCI can maintain the gel state. Moreover, the PCI exhibits hightransparency, recyclability, good adhesion, and high conductivity.Such excellent features distinguish the PCI from ordinary ionogels,providing a new way to realize skin-like sensing in harsh environmentsfor future bionic machines.
Keyword :
high-temperaturetolerance high-temperaturetolerance hydrogen bond hydrogen bond ionic cluster ionic cluster ionic liquid ionic liquid ionogel ionogel strain sensor strain sensor strain stiffening strain stiffening
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GB/T 7714 | Lyu, Xiaolin , Zhang, Haoqi , Yang, Shichu et al. Strain-Stiffening Ionogel with High-Temperature Tolerance via the Synergy of Ionic Clusters and Hydrogen Bonds [J]. | ACS APPLIED MATERIALS & INTERFACES , 2023 , 15 (26) : 31888-31898 . |
MLA | Lyu, Xiaolin et al. "Strain-Stiffening Ionogel with High-Temperature Tolerance via the Synergy of Ionic Clusters and Hydrogen Bonds" . | ACS APPLIED MATERIALS & INTERFACES 15 . 26 (2023) : 31888-31898 . |
APA | Lyu, Xiaolin , Zhang, Haoqi , Yang, Shichu , Zhan, Weiqing , Wu, Mingmao , Yu, Yan et al. Strain-Stiffening Ionogel with High-Temperature Tolerance via the Synergy of Ionic Clusters and Hydrogen Bonds . | ACS APPLIED MATERIALS & INTERFACES , 2023 , 15 (26) , 31888-31898 . |
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The existing electrolytes suffer from the uncontrolled Li+ deposition, flammability, and limited ionic conductivity problems. The gel-electrolyte is a core technology for the lithium metal batteries as they offer diverse tools for constructing unique solvent structure and suppress the uncontrolled growth of lithium dendrites. Here, a localized-anion gel-electrolyte with poly(ethyl acrylate/acrylic acid lithium) is reported to achieve a dendrite-free lithium deposition with the stable solid-electrolyte interphase. The flame-retardant triethyl phosphate are engaged in gel-electrolyte as a plasticizer with a solution casting method, which improves the safety of Li metal batteries. The TFSI- is localized by anionphilic -COOLi in the vicinity of polymers, which maintains the uniform lithium flux and suppresses the deposition to achieve the smooth lithium growth. The lithiophilic -COOR group homogenized the Li+ flow at the electrode/electrolyte interface and alleviated the local lithium-ion flow. The LFP//Li cells assembled with the gel-electrolyte can still maintain a coulombic efficiency of 99% and capacity retention of 96% after 320 cycles at 1 C. And the NCM811//Li cells assembled with the gel-electrolyte can maintain about 90% coulombic efficiency and 88% capacity retention after 120 cycles at 0.5 C. In summary, this work provides an effective strategy for the application of next-generation high-safety lithium metal batteries.
Keyword :
Flame retardant Flame retardant Gel-electrolyte Gel-electrolyte Localized-anion Localized-anion Poly(ethyl acrylate/acrylic acid lithium) Poly(ethyl acrylate/acrylic acid lithium) Solvation cluster Solvation cluster
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GB/T 7714 | Cui, Xiancai , Xu, Zhengwei , Xi, Chenpeng et al. Constructing localized-anion gel-electrolyte with poly(ethyl acrylate/acrylic acid lithium) for flame-retardant lithium metal batteries [J]. | JOURNAL OF SOLID STATE ELECTROCHEMISTRY , 2023 , 28 (1) : 273-281 . |
MLA | Cui, Xiancai et al. "Constructing localized-anion gel-electrolyte with poly(ethyl acrylate/acrylic acid lithium) for flame-retardant lithium metal batteries" . | JOURNAL OF SOLID STATE ELECTROCHEMISTRY 28 . 1 (2023) : 273-281 . |
APA | Cui, Xiancai , Xu, Zhengwei , Xi, Chenpeng , Zhang, Haoqi , Xiao, Yuanbin , Li, Long et al. Constructing localized-anion gel-electrolyte with poly(ethyl acrylate/acrylic acid lithium) for flame-retardant lithium metal batteries . | JOURNAL OF SOLID STATE ELECTROCHEMISTRY , 2023 , 28 (1) , 273-281 . |
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In light of the rapid development of intelligence and miniaturization in electronics, the growing demand for sustainable energy sources gives rise to a plethora of environmental/mechanical energy harvesters. However, the fluctuating nature of these generated energies frequently presents a challenge to their immediate usability. Although electrolytic capacitors can smooth fluctuating energy, lacking miniaturization and flexibility constrain their potential applications. Conversely, electrochemical capacitors (ECs), particularly fiber-shaped electrochemical capacitors (FSECs), can offer superior flexibility. Nevertheless, the inherent trade-off between ion transport and charge storage in fibrous electrodes poses a significant obstacle to their filtering capability. Here, a hierarchically 3D fibrous electrode that effectively balances ion transport and charge storage through its unhindered primary framework and intertwined secondary frameworks is presented. The resulting FSEC exhibits an exceptional specific areal capacitance of 1.37 mF cm(-2) with a phase angle of -82 & DEG; at 120 Hz, surpassing that of fiber-shaped filter capacitors and most non-fibrous filter ECs previously reported. Additionally, the FSEC displays excellent flexibility and high-frequency response, rendering it well-suited for filtering arbitrary ripple voltage and compatible with environmental/mechanical energy harvesters. These results demonstrate a promising approach for designing fibrous high-frequency response electrodes and a foundation for portable environmental energy harvesting devices.
Keyword :
AC-line filtering AC-line filtering flexibility flexibility graphene graphene PEDOT PEDOT supercapacitors supercapacitors
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GB/T 7714 | Wu, Mingmao , Sun, Ke , He, Jinfeng et al. Hierarchically 3D Fibrous Electrode for High-Performance Flexible AC-Line Filtering in Fluctuating Energy Harvesters [J]. | ADVANCED FUNCTIONAL MATERIALS , 2023 , 33 (45) . |
MLA | Wu, Mingmao et al. "Hierarchically 3D Fibrous Electrode for High-Performance Flexible AC-Line Filtering in Fluctuating Energy Harvesters" . | ADVANCED FUNCTIONAL MATERIALS 33 . 45 (2023) . |
APA | Wu, Mingmao , Sun, Ke , He, Jinfeng , Huang, Qinzhui , Zhan, Weiqing , Lu, Zhixing et al. Hierarchically 3D Fibrous Electrode for High-Performance Flexible AC-Line Filtering in Fluctuating Energy Harvesters . | ADVANCED FUNCTIONAL MATERIALS , 2023 , 33 (45) . |
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Flexible conductive materials capable of simulating transparent ocean organisms have garnered interest in underwater motion monitoring and covert communication applications. However, the creation of underwater flexible conductors that possess mechanical robustness, adhesion, and self-healing properties remains a challenge. Herein, hydrophobic interaction is combined with electrostatic interaction to obtain a solvent-free transparent poly(ionic liquid) elastomer (PILE) fabricated using soft acrylate monomers and acrylate ionic liquids. The synergy of hydrophobic and electrostatic interactions can eliminate the hydration of water molecules underwater, giving the PILE adjustable fracture strength, good elasticity, high stretchability, high toughness, fatigue resistance, underwater self-healing ability, underwater adhesion, and ionic conductivity. As a result, the transparent iontronic sensor generated from the PILE can achieve multifunctional sensing and human motion detection with high sensitivity and stability. In particular, the sensor can also transmit information underwater through stretching, pressing, and non-contact modes, demonstrating its huge potential in underwater flexible iontronic devices.
Keyword :
adhesion adhesion ionic conductors ionic conductors self-healing self-healing underwater monitoring underwater monitoring
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GB/T 7714 | Gong, Yue , Yu, Li , Lyu, Xiaolin et al. A Mechanically Robust, Self-Healing, and Adhesive Biomimetic Camouflage Ionic Conductor for Aquatic Environments [J]. | ADVANCED FUNCTIONAL MATERIALS , 2023 , 33 (47) . |
MLA | Gong, Yue et al. "A Mechanically Robust, Self-Healing, and Adhesive Biomimetic Camouflage Ionic Conductor for Aquatic Environments" . | ADVANCED FUNCTIONAL MATERIALS 33 . 47 (2023) . |
APA | Gong, Yue , Yu, Li , Lyu, Xiaolin , Zheng, Shixiang , Yu, Yan , Zhou, Piaopiao et al. A Mechanically Robust, Self-Healing, and Adhesive Biomimetic Camouflage Ionic Conductor for Aquatic Environments . | ADVANCED FUNCTIONAL MATERIALS , 2023 , 33 (47) . |
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本发明公开了一种具有强弱离子簇的固态离子弹性体及其制备方法。该离子弹性体是以乙烯基咪唑类离子液体和丙烯酸酯类化合物为反应单体,经热引发剂原位自由基聚合得到。由于所用两种单体结构差异较大,因此在自由基聚合反应过程中,两种单体的反应速率也具有较大差异。这样差异使聚合物内部形成不均匀分布的离子团簇,极大地提高了聚合物的拉伸性能,且所得离子弹性体还具备良好的热稳定性,以及在较宽温度范围内良好的导电性,因而在柔性电子皮肤、人体运动监测、可植入电子设备、人机交互界面等领域表现出巨大的应用潜力。
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GB/T 7714 | 吕晓林 , 虞力 , 邹志刚 . 一种具有强弱离子簇的固态离子弹性体及其制备方法 : CN202211187529.X[P]. | 2022-09-28 00:00:00 . |
MLA | 吕晓林 et al. "一种具有强弱离子簇的固态离子弹性体及其制备方法" : CN202211187529.X. | 2022-09-28 00:00:00 . |
APA | 吕晓林 , 虞力 , 邹志刚 . 一种具有强弱离子簇的固态离子弹性体及其制备方法 : CN202211187529.X. | 2022-09-28 00:00:00 . |
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