Science China Materials最新文献

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Bilinear magnetoelectric resistance induced by spin Hall effect
IF 6.8 2区 材料科学
Science China Materials Pub Date : 2024-11-18 DOI: 10.1007/s40843-024-3181-5
Ruiyue Chu, Cheng Song
{"title":"Bilinear magnetoelectric resistance induced by spin Hall effect","authors":"Ruiyue Chu, Cheng Song","doi":"10.1007/s40843-024-3181-5","DOIUrl":"10.1007/s40843-024-3181-5","url":null,"abstract":"","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 2","pages":"687 - 688"},"PeriodicalIF":6.8,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108771","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}
引用次数: 0
Adjusting *CO adsorption configuration over tandem trimetallic AuAgCu heterojunction boosts CO2 electroreduction to ethanol via asymmetric C-C coupling 调整串联三金属AuAgCu异质结的CO吸附配置,通过不对称C-C耦合促进CO2电还原为乙醇
IF 6.8 2区 材料科学
Science China Materials Pub Date : 2024-11-18 DOI: 10.1007/s40843-024-3162-2
Yongxia Shi  (, ), Junjun Li  (, ), Zhiwen Min  (, ), Xinyi Wang  (, ), Man Hou  (, ), Hao Ma  (, ), Zechao Zhuang  (, ), Yuchen Qin  (, ), Yuanmiao Sun  (, ), Dingsheng Wang  (, ), Zhicheng Zhang  (, )
{"title":"Adjusting *CO adsorption configuration over tandem trimetallic AuAgCu heterojunction boosts CO2 electroreduction to ethanol via asymmetric C-C coupling","authors":"Yongxia Shi \u0000 (,&nbsp;),&nbsp;Junjun Li \u0000 (,&nbsp;),&nbsp;Zhiwen Min \u0000 (,&nbsp;),&nbsp;Xinyi Wang \u0000 (,&nbsp;),&nbsp;Man Hou \u0000 (,&nbsp;),&nbsp;Hao Ma \u0000 (,&nbsp;),&nbsp;Zechao Zhuang \u0000 (,&nbsp;),&nbsp;Yuchen Qin \u0000 (,&nbsp;),&nbsp;Yuanmiao Sun \u0000 (,&nbsp;),&nbsp;Dingsheng Wang \u0000 (,&nbsp;),&nbsp;Zhicheng Zhang \u0000 (,&nbsp;)","doi":"10.1007/s40843-024-3162-2","DOIUrl":"10.1007/s40843-024-3162-2","url":null,"abstract":"<div><p>Rationally modulating the adsorption configuration of the key *CO intermediate could facilitate carbon-carbon (C-C) coupling to generate multi-carbon products in the electrochemical CO<sub>2</sub> reduction reaction. In this work, theoretical calculations reveal that C-C coupling via atop-adsorbed *CHO and hollow-adsorbed *CO over Cu sites is an energetically favorable pathway. As a proof of concept, a tandem trimetallic AuAgCu heterojunction (Au@Ag/Cu) was prepared, where the atop-adsorbed *CO over Au@Ag sites could migrate to Cu sites with hollow adsorption configuration, and then the asymmetric C-C coupling via transferred hollow-adsorbed *CO and existed atop-adsorbed *CHO over Cu sites facilitates the formation of the ethanol product, exhibiting a maximum Faraday efficiency of 65.9% at a low potential of −0.3 V vs. reverse hydrogen electrode. Our work provides new insights into the intrinsic understanding of tandem catalysis by regulating adsorption configuration of the intermediate products.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 1","pages":"173 - 179"},"PeriodicalIF":6.8,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142941295","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}
引用次数: 0
Collaborative actuation of liquid crystal elastomer unit cells as a function design platform 液晶弹性体单元胞协同驱动的功能设计平台
IF 6.8 2区 材料科学
Science China Materials Pub Date : 2024-11-15 DOI: 10.1007/s40843-024-3158-7
Jinyu Wang  (, ), Hari Krishna Bisoyi, Yinliang Huang  (, ), Yiyi Xu  (, ), Xinfang Zhang  (, ), Ben Fan  (, ), Tao Yang  (, ), Zhiyang Liu  (, ), Shuai Huang  (, ), Quan Li  (, )
{"title":"Collaborative actuation of liquid crystal elastomer unit cells as a function design platform","authors":"Jinyu Wang \u0000 (,&nbsp;),&nbsp;Hari Krishna Bisoyi,&nbsp;Yinliang Huang \u0000 (,&nbsp;),&nbsp;Yiyi Xu \u0000 (,&nbsp;),&nbsp;Xinfang Zhang \u0000 (,&nbsp;),&nbsp;Ben Fan \u0000 (,&nbsp;),&nbsp;Tao Yang \u0000 (,&nbsp;),&nbsp;Zhiyang Liu \u0000 (,&nbsp;),&nbsp;Shuai Huang \u0000 (,&nbsp;),&nbsp;Quan Li \u0000 (,&nbsp;)","doi":"10.1007/s40843-024-3158-7","DOIUrl":"10.1007/s40843-024-3158-7","url":null,"abstract":"<div><p>As future soft robotic devices necessitate a level of complexity surpassing current standards, a new design approach is needed that integrates multiple systems necessary to synchronize the motions of soft actuators and the response of signals, thereby enhancing the intelligence of flexible devices. Herein, we propose a liquid crystal elastomer unit cell-based platform that organizes the cells in a group to create expandable functions. One unit cell behaves like a flexible module that can expand biaxially into a specific, stable, and controllable pattern. Collaborating the unit cells in different manners results in an adaptable soft grasper, a half-adder for information processing, and a tunable phononic bandgap. This implies a high level of reconfigurability and scalability in both structures and functions by elegantly reassembling the unit cells. This design strategy has the potential to integrate multiple functions that traditional soft actuators cannot accommodate, providing a platform for developing intelligent soft robotics.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 1","pages":"236 - 243"},"PeriodicalIF":6.8,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40843-024-3158-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142941291","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}
引用次数: 0
Enhancing control over the degradation behavior of zinc alloy via MOF coating 通过 MOF 涂层加强对锌合金降解行为的控制
IF 6.8 2区 材料科学
Science China Materials Pub Date : 2024-11-13 DOI: 10.1007/s40843-024-3106-1
Rongsheng Deng  (, ), Yu Peng  (, ), Qing Meng  (, ), Zichun Jiang  (, ), Qinglin Fang  (, ), Yingzhi Chen  (, ), Tong Li  (, ), Kuo Men  (, ), Bailiang Wang  (, ), Luning Wang  (, )
{"title":"Enhancing control over the degradation behavior of zinc alloy via MOF coating","authors":"Rongsheng Deng \u0000 (,&nbsp;),&nbsp;Yu Peng \u0000 (,&nbsp;),&nbsp;Qing Meng \u0000 (,&nbsp;),&nbsp;Zichun Jiang \u0000 (,&nbsp;),&nbsp;Qinglin Fang \u0000 (,&nbsp;),&nbsp;Yingzhi Chen \u0000 (,&nbsp;),&nbsp;Tong Li \u0000 (,&nbsp;),&nbsp;Kuo Men \u0000 (,&nbsp;),&nbsp;Bailiang Wang \u0000 (,&nbsp;),&nbsp;Luning Wang \u0000 (,&nbsp;)","doi":"10.1007/s40843-024-3106-1","DOIUrl":"10.1007/s40843-024-3106-1","url":null,"abstract":"<div><p>Zinc and its alloys provide a scalable alternative to the list of biodegradable metals due to its moderate degradation rates and biocompatible degradation products. However, one of the challenges impeding their clinical applications is the uncontrollable and unstable interfacial reactions between zinc implants and the corrosive media. In this study, we report a facile synthesis of metal–organic framework (MOF) nanocrystal coating with tunable thickness on the high-strength Zn-0.8Li alloy matrix for controlled corrosion. The as-obtained dense and uniform MOF nanocrystals form a strong connection with the zinc matrix via coordination bond so as to maintain the mechanical properties, and meantime provide highly rough surfaces exhibiting tunable wettability. The varied MOF coating thus regulate the interface structure between the zinc matrix and corrosive media to control the degradation behavior. Excellent antibacterial activity and biocompatibility are also achieved because of the unique topology morphologies, surface superhydrophilicity, as well as the dynamic Zn<sup>2+</sup> release. This study sheds valuable lights on the design of MOF-functionalized metal implants for practical use and also triggers extensive applications of MOF in biomaterials.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"67 12","pages":"4074 - 4086"},"PeriodicalIF":6.8,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714577","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}
引用次数: 0
Temperature-sensitive hydrogel inhibits VEGFA-dependent neovascularization in atherosclerosis progression 温度敏感水凝胶抑制动脉粥样硬化进展中vegfa依赖性新血管形成
IF 6.8 2区 材料科学
Science China Materials Pub Date : 2024-11-13 DOI: 10.1007/s40843-024-3095-8
Yi Duan  (, ), Jiangtao Lin  (, ), Jiang Yue  (, ), Yuanyuan Li  (, ), Jinghan Liao  (, ), Ying Sun  (, ), Quan Wang  (, ), Yourong Duan  (, ), Zhaojun Li  (, )
{"title":"Temperature-sensitive hydrogel inhibits VEGFA-dependent neovascularization in atherosclerosis progression","authors":"Yi Duan \u0000 (,&nbsp;),&nbsp;Jiangtao Lin \u0000 (,&nbsp;),&nbsp;Jiang Yue \u0000 (,&nbsp;),&nbsp;Yuanyuan Li \u0000 (,&nbsp;),&nbsp;Jinghan Liao \u0000 (,&nbsp;),&nbsp;Ying Sun \u0000 (,&nbsp;),&nbsp;Quan Wang \u0000 (,&nbsp;),&nbsp;Yourong Duan \u0000 (,&nbsp;),&nbsp;Zhaojun Li \u0000 (,&nbsp;)","doi":"10.1007/s40843-024-3095-8","DOIUrl":"10.1007/s40843-024-3095-8","url":null,"abstract":"<div><p>Atherosclerosis remains a major cause of morbidity and mortality worldwide. Intraplaque neovascularization critically promotes atherosclerotic progression and instability. Vascular endothelial growth factor A (VEGFA) stimulates aberrant microvessel growth in plaques by inducing endothelial cell proliferation and migration. Pigment epithelium-derived factor (PEDF) potently inhibits VEGFA-dependent neovascularization. This study introduces a thermosensitive hydrogel (PFSgel) developed from poloxamer 407 (F127) and sodium alginate (SA) to deliver PEDF locally to atherosclerotic lesions. The PFSgel demonstrated a suitable liquid-solid transition at body temperature (37°C), then forming a stable 3D network structure after SA gelling with the Ca<sup>2+</sup> in the physiological environment which contributed to the character of controlled release. Rheological analysis confirmed its phase transition temperature of 28.7°C and notable self-healing properties, making it ideal for dynamic vascular environments. <i>In vitro</i> experiments showed that PFSgel could suppress VEGFA-induced endothelial cells’ proliferation and migration through modulation of CD31 and MMP-2/MMP-9 signaling. Notably, <i>in vivo</i> degradation test validated the controlled release pattern of PFSgel. In Apoe-deficient atherosclerotic mice, ultrasound-guided PFSgel injection onto the abdominal aorta enabled gradual <i>in situ</i> release of encapsulated PEDF. This effectively reduced plaque burden, neovascularization, and luminal stenosis, even with exogenous VEGFA administration. Histological analyses confirmed reduced lipid deposition, plaque area, and neovascularization within plaques. Overall, this novel <i>in situ</i>-forming PEDF delivery platform enables targeted suppression of pathological neovascularization via CD31 and MMP-2/MMP-9 pathways, representing a promising approach to stabilize high-risk plaques by intervening against VEGFA-dependent neovascularization.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 1","pages":"280 - 291"},"PeriodicalIF":6.8,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142941245","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}
引用次数: 0
Self-adhesive ultrasound-mediated triboelectric nanogenerator device for subcutaneous antibacterial treatment and accelerated wound healing 用于皮下抗菌治疗和加速伤口愈合的自粘超声介导摩擦电纳米发电机装置
IF 6.8 2区 材料科学
Science China Materials Pub Date : 2024-11-13 DOI: 10.1007/s40843-024-3120-x
Xiaowei Lv  (, ), Chunmei Guo  (, ), Sihan Luo  (, ), Lina Qi  (, ), Jingyi Shi  (, ), Jianhang Zhao  (, ), Ying Chen  (, ), Aijun He  (, ), Quli Fan  (, )
{"title":"Self-adhesive ultrasound-mediated triboelectric nanogenerator device for subcutaneous antibacterial treatment and accelerated wound healing","authors":"Xiaowei Lv \u0000 (,&nbsp;),&nbsp;Chunmei Guo \u0000 (,&nbsp;),&nbsp;Sihan Luo \u0000 (,&nbsp;),&nbsp;Lina Qi \u0000 (,&nbsp;),&nbsp;Jingyi Shi \u0000 (,&nbsp;),&nbsp;Jianhang Zhao \u0000 (,&nbsp;),&nbsp;Ying Chen \u0000 (,&nbsp;),&nbsp;Aijun He \u0000 (,&nbsp;),&nbsp;Quli Fan \u0000 (,&nbsp;)","doi":"10.1007/s40843-024-3120-x","DOIUrl":"10.1007/s40843-024-3120-x","url":null,"abstract":"<div><p>Electrical stimulation therapy has excellent potential for wound healing and tissue regeneration. However, conventional approaches often require external power sources and implantable electrodes, which can limit their practical applications. Herein, we report the development of an ultrasound-mediated powered wound healing device (LH-TENG) that employs skin-adhesive AgC@L-g-PAM/HPC hydrogel as electrodes instead of traditional ones. Under ultrasound excitation, the LH-TENG can firmly adhere to tissue surfaces and generate a uniform electric field around the wound area, promoting cell migration, proliferation, and accelerating healing. Notably, the device exhibits antibacterial properties, making it promising for treating infected chronic wounds. Due to its wireless power supply, simple structure, and excellent biocompatibility, this ultrasound-mediated wound healing device has the potential and advantages of developing implantable therapy devices for treating infected chronic wounds.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 1","pages":"261 - 269"},"PeriodicalIF":6.8,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142941246","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}
引用次数: 0
Tandemly promoting the sulfur redox kinetics through low concentration mixed organodiselenide and organoditelluride in Ah-level high-energy-density Li-S batteries 低浓度有机二硒化物和有机碲化物在ah级高能量密度Li-S电池中串联促进硫氧化还原动力学
IF 6.8 2区 材料科学
Science China Materials Pub Date : 2024-11-13 DOI: 10.1007/s40843-024-3173-9
Jiangqi Zhou  (, ), Chengyong Shu  (, ), Qianyu Zhang  (, ), Wei Tang  (, ), Yuping Wu  (, )
{"title":"Tandemly promoting the sulfur redox kinetics through low concentration mixed organodiselenide and organoditelluride in Ah-level high-energy-density Li-S batteries","authors":"Jiangqi Zhou \u0000 (,&nbsp;),&nbsp;Chengyong Shu \u0000 (,&nbsp;),&nbsp;Qianyu Zhang \u0000 (,&nbsp;),&nbsp;Wei Tang \u0000 (,&nbsp;),&nbsp;Yuping Wu \u0000 (,&nbsp;)","doi":"10.1007/s40843-024-3173-9","DOIUrl":"10.1007/s40843-024-3173-9","url":null,"abstract":"<div><p>Homogeneous redox mediation is efficient in alleviating the shuttling effect and slow redox kinetics of lithium polysulfides in lithium-sulfur batteries. However, their perfect performance is not fulfilled owning to the fact that the multi-step transformation of lithium polysulfides requests the multifunctional active positions for the tandem catalysis. Based on the redox comediation principles, a promoter of mixing organodiselenide and organoditelluride (mixed-Se/Te) was raised to induce tandem catalysis and boost the effective electrochemical conversion of lithium polysulfides. More specifically, diphenyl diselenide facilitated the liquid-liquid and solid-liquid transformation between lithium polysulfides and sulfur, while diphenyl ditelluride improved the solid-liquid transformation concerning lithium sulfide deposition. Consequently, even under high sulfur loading of 6.5 mg cm<sup>−2</sup> and low electrolyte/sulfur ratio of 5.88 µL mg<sup>−1</sup>, the 10 mM low concentration mixed-Se/Te promoter offered a high discharge capacity of 6.6 mAh cm<sup>−2</sup> and high rate performance of 4.1 mAh cm<sup>−2</sup> at 0.5 C. Moreover, the assembled 1.5 Ah-level lithium-sulfur pouch cells provide an energy density of 332 Wh kg<sup>−1</sup> at 0.05 C and good cycling stability. Our research demonstrates the applicability of propelling continuous sulfur conversion reactions with detached active positions and is anticipated to stimulate deep molecular design of kinetic promoter to targeted energy-associated redox reactions.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 1","pages":"207 - 216"},"PeriodicalIF":6.8,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142941244","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}
引用次数: 0
Phase transformation of two-dimensional nanomaterials: state-of-the-art progress in designing strategies and catalytic applications 二维纳米材料的相变:设计策略和催化应用的最新进展
IF 6.8 2区 材料科学
Science China Materials Pub Date : 2024-11-12 DOI: 10.1007/s40843-024-3141-4
Zeqi Wu  (, ), Feng Niu  (, ), Da Chen  (, ), Yuexiang Huang  (, ), Guigao Liu  (, ), Yong Zhou  (, ), Wenguang Tu  (, ), Xi Zhu  (, ), Zhigang Zou  (, )
{"title":"Phase transformation of two-dimensional nanomaterials: state-of-the-art progress in designing strategies and catalytic applications","authors":"Zeqi Wu \u0000 (,&nbsp;),&nbsp;Feng Niu \u0000 (,&nbsp;),&nbsp;Da Chen \u0000 (,&nbsp;),&nbsp;Yuexiang Huang \u0000 (,&nbsp;),&nbsp;Guigao Liu \u0000 (,&nbsp;),&nbsp;Yong Zhou \u0000 (,&nbsp;),&nbsp;Wenguang Tu \u0000 (,&nbsp;),&nbsp;Xi Zhu \u0000 (,&nbsp;),&nbsp;Zhigang Zou \u0000 (,&nbsp;)","doi":"10.1007/s40843-024-3141-4","DOIUrl":"10.1007/s40843-024-3141-4","url":null,"abstract":"<div><p>Phase transformation of two-dimensional (2D) nanomaterials can lead to significant changes in electronic and optical properties, which enables the development of novel applications. Effective strategies for phase engineering of 2D nanomaterials have drawn considerable attention in recent years. This review focuses on the state-of-the-art progress in the phase transformation of 2D nanomaterials and their catalytic applications. First, the basic concepts of phase transformation and the outstanding electronic and optical properties induced by phase transformation are briefly introduced. Second, different strategies for achieving phase transformation are discussed in detail and classified into several types based on their characteristics, including (i) doping, (ii) external fields, (iii) optical irradiation, (iv) strain effect, (v) high-energy particle excitation, and (vi) thermal post-processing. The applications of 2D nanomaterials in catalysis based on phase transformation have also been discussed. Finally, a summary of the technical challenges to phase control in 2D nanomaterials and potential opportunities for developing novel applications is presented.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 1","pages":"65 - 85"},"PeriodicalIF":6.8,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142941230","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}
引用次数: 0
Vinyl flanked amorphous conjugated polymer by Knoevenagel condensation of diketopyrrolopyrrole and indacenodithiophene for flexible transistor 柔性晶体管用双酮吡咯和吲哚二噻吩的Knoevenagel缩合的乙烯基双侧非晶态共轭聚合物
IF 6.8 2区 材料科学
Science China Materials Pub Date : 2024-11-12 DOI: 10.1007/s40843-024-3171-6
Yanlin Chen  (, ), Pinyu Chen  (, ), Shihong Zhou  (, ), Zhiwei Yang  (, ), Haijun Long  (, ), Xianfeng Liang  (, ), Tianwen Chen  (, ), Jing Li  (, ), Luxi Tan  (, ), Hao-Li Zhang  (, ), Lichun Dong  (, ), Zitong Liu  (, )
{"title":"Vinyl flanked amorphous conjugated polymer by Knoevenagel condensation of diketopyrrolopyrrole and indacenodithiophene for flexible transistor","authors":"Yanlin Chen \u0000 (,&nbsp;),&nbsp;Pinyu Chen \u0000 (,&nbsp;),&nbsp;Shihong Zhou \u0000 (,&nbsp;),&nbsp;Zhiwei Yang \u0000 (,&nbsp;),&nbsp;Haijun Long \u0000 (,&nbsp;),&nbsp;Xianfeng Liang \u0000 (,&nbsp;),&nbsp;Tianwen Chen \u0000 (,&nbsp;),&nbsp;Jing Li \u0000 (,&nbsp;),&nbsp;Luxi Tan \u0000 (,&nbsp;),&nbsp;Hao-Li Zhang \u0000 (,&nbsp;),&nbsp;Lichun Dong \u0000 (,&nbsp;),&nbsp;Zitong Liu \u0000 (,&nbsp;)","doi":"10.1007/s40843-024-3171-6","DOIUrl":"10.1007/s40843-024-3171-6","url":null,"abstract":"<div><p>Conjugated polymers exhibit exceptional adaptability in flexible thin-film transistors, owing to their inherent flexibility and high charge mobility. Nonetheless, achieving conjugated polymers that demonstrate both high mobility and stability under mechanical stress, such as bending or stretching, remains a significant challenge. In this study, we synthesized an ethylene-bridged conjugated polymer, PDPPVIDT, derived from methyl-side diketopyrrolopyrrole (DPP) and indacenodithiophene (IDT) aldehydes, using an environmentally friendly Knoevenagel condensation reaction under mild conditions, resulting in a moderate yield with promising scalability. Conventional characterization techniques revealed enhanced backbone planarity with stable π-π stacking, while thin films of PDPPVIDT displayed a near-amorphous nature due to the conformational isomerism of the ethylene bond. This structure enables simultaneous charge transport and flexibility. Consequently, flexible organic thin-film transistor (OTFT) devices based on PDPPVIDT demonstrated excellent hole mobility (<i>μ</i><sub>h</sub>) reaching up to 1.70 cm<sup>2</sup> V<sup>−1</sup> s<sup>−1</sup>, along with high mechanical bending resilience. This work underscores the potential of vinyl-bridged donor-acceptor conjugated polymers, highlighting the industrial adaptability of their production process and offering new insights for the design and synthesis of future flexible electronic materials.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 1","pages":"110 - 116"},"PeriodicalIF":6.8,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142941229","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}
引用次数: 0
Highly efficient and selective photocatalytic CO2 reduction to CO via molecular engineering of covalent organic framework 通过共价有机骨架的分子工程,高效选择性光催化CO2还原为CO
IF 6.8 2区 材料科学
Science China Materials Pub Date : 2024-11-12 DOI: 10.1007/s40843-024-3168-3
Wenling Zhao  (, ), Lei Sun  (, ), Li Yang  (, ), Ruiling Zhang  (, ), Guoqing Ren  (, ), Sen Wang  (, ), Hao Wu  (, ), Xinchen Kang  (, ), Wei-Qiao Deng  (, ), Chengcheng Liu  (, )
{"title":"Highly efficient and selective photocatalytic CO2 reduction to CO via molecular engineering of covalent organic framework","authors":"Wenling Zhao \u0000 (,&nbsp;),&nbsp;Lei Sun \u0000 (,&nbsp;),&nbsp;Li Yang \u0000 (,&nbsp;),&nbsp;Ruiling Zhang \u0000 (,&nbsp;),&nbsp;Guoqing Ren \u0000 (,&nbsp;),&nbsp;Sen Wang \u0000 (,&nbsp;),&nbsp;Hao Wu \u0000 (,&nbsp;),&nbsp;Xinchen Kang \u0000 (,&nbsp;),&nbsp;Wei-Qiao Deng \u0000 (,&nbsp;),&nbsp;Chengcheng Liu \u0000 (,&nbsp;)","doi":"10.1007/s40843-024-3168-3","DOIUrl":"10.1007/s40843-024-3168-3","url":null,"abstract":"<div><p>Covalent organic frameworks (COFs) are garnering significant interest in photocatalytic CO<sub>2</sub> reduction. However, their limited efficiency in separating photogenerated carriers and the scarcity of catalytic sites lead to suboptimal photocatalytic performance. Here we develop a molecular engineering approach to design a pyrene-based COF (PyTa-H COF) confined cobalt single atoms photocatalyst (Co SACs) for CO<sub>2</sub> reduction. Pyrene moiety is introduced to enhance visible-light harvesting capability and improve charge separation in the COF. Subsequently, Co SACs enhance the photocatalytic activity by accelerating the migration of photo-induced carriers and reducing the reaction energy of the rate-determining step. Remarkably, PyTa-H@Co achieves a CO production rate of 18.36 mmol g<sup>−1</sup> h<sup>−1</sup> and a selectivity of 94% in 4 h under visible light irradiation, which is comparable to the reported best-performing COFs. Density functional theory calculations reveal that the Co SACs greatly stabilize *COOH and significantly reduce the energy of the decisive step, leading to outstanding photocatalytic performance. This work, through molecular engineering design, highlights the critical relationship between catalyst structure and function in enhancing photocatalytic efficiency.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 1","pages":"165 - 172"},"PeriodicalIF":6.8,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142941214","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}
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