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Durable poly(binaphthyl-co-p-terphenyl piperidinium)-based anion exchange membranes with dual side chains

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Journal of Energy Chemistry 2024年第2期89卷 324-335,I0008页

作者： Weiting Gao Xuelang Gao Qiugen zhang Aimei Zhu qinglin Liu Department of Chemical&Biochemical Engineering Fujian Provincial Key Laboratory of Theoretical and Computational ChemistryThe College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005FujianChina Department of Chemistry Pohang University of Science and Technology(POSTECH)Pohang 790-784South Korea

Building well-developed ion-conductive highways is highly desirable for anion exchange membranes(AEMs).Grafting side chain is a highly effective approach for constructing a well-defined phaseseparated morphological structure and forming unblocked ion pathways in AEMs for fast ion transport.Fluorination of side chains can further enhance phase separation due to the superhydrophobic nature of fluorine groups.However,their electronic effect on the alkaline stability of side chains and membranes is rarely reported.Here,fluorine-containing and fluorine-free side chains are introduced into the polyaromatic backbone in proper configuration to investigate the impact of the fluorine terminal group on the stability of the side chains and membrane properties.The poly(binaphthyl-co-p-terphenyl piperidinium)AEM(QBNp TP)has the highest molecular weight and most dimensional stability due to its favorable backbone arrangement among ortho-and meta-terphenyl based AEMs.Importantly,by introducing both a fluorinated piperidinium side chain and a hexane chain into the p-terphenyl-based backbone,the prepared AEM(QBNp TP-QFC)presents an enhanced conductivity(150.6 m S cm^(-1))and a constrained swelling at 80℃.The electronic effect of fluorinated side chains is contemplated by experiments and simulations.The results demonstrate that the presence of strong electro-withdrawing fluorine groups weakens the electronic cloud of adjacent C atoms,increasing OH^(-)attack on the C atom and improving the stability of piperidinium cations.Hence QBNp TP-QFC possesses a robust alkaline stability at 80℃(95.3%conductivity retention after testing in 2 M Na OH for 2160 h).An excellent peak power density of 1.44 W cm^(-2)and a remarkable durability at 80℃(4.5%voltage loss after 100 h)can be observed.

关键词： Anion exchange membranes Backbone structure Fluorinated side chain Alkaline stability

Ecology and risks of the global plastisphere as a newly expanding microbial habitat

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The Innovation 2024年第1期5卷 49-58页

作者： Changchao Li Michael RGillings Chao zhang qinglin Chen Dong Zhu Jie Wang Kankan Zhao Qicheng Xu Polly Hangmei Leung Xiangdong Li Jian Liu Ling Jin Department of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityKowloonHong KongChina Environment Research Institute Shandong UniversityQingdao 266237China State Key Laboratory of Marine Pollution City University of Hong KongKowloon TongHong KongChina ARC Centre of Excellence in Synthetic Biology Faculty of Science and EngineeringMacquarie UniversitySydneyNSW 2109Australia Key Laboratory of Urban Environment and Health Ningbo Urban Environment Observation and Research StationInstitute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation College of Resources and Environmental SciencesChina Agricultural UniversityBeijing 100193China Institute of Soil and Water Resources and Environmental Science College of Environmental and Resource SciencesZhejiang UniversityHangzhou 310058China Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization Nanjing Agricultural UniversityNanjing 210095China Department of Health Technology and Informatics and Research Institute for Future Food The Hong Kong Polytechnic UniversityKowloonHong KongChina Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China

Plastic offers a new niche for microorganisms,the plastisphere.The everincreasing emission of plastic waste makes it critical to understand the microbial ecology of the plastisphere and associated effects.Here,we present a global fingerprint of the plastisphere,analyzing samples collected from freshwater,seawater,and terrestrial ecosystems.The plastisphere assembles a distinct microbial community that has a clearly higher heterogeneity and a more deterministically dominated assembly compared to natural habitats.New coexistence patterns—loose and fragile networks with mostly specialist linkages among microorganisms that are rarely found in natural habitats—are seen in the plastisphere.Plastisphere microbiomes generally have a great potential to metabolize organic compounds,which could accelerate carbon turnover.Microorganisms involved in the nitrogen cycle are also altered in the plastisphere,especially in freshwater plastispheres,where a high abundance of denitrifiers may increase the release of nitrite(aquatic toxicant)and nitrous oxide(greenhouse gas).Enrichment of animal,plant,and human pathogens means that the plastisphere could become an increasingly mobile reservoir of harmful microorganisms.Our findings highlight that if the trajectory of plastic emissions is not reversed,the expanding plastisphere could pose critical planetary health challenges.

关键词： reservoir mostly habitat

Preferential transport activity of Dk DTX5/MATE5 affects the formation of different astringency in persimmon

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Journal of Integrative Plant Biology 2023年第10期65卷 2304-2319页

作者： Ying Liu Xin Wu Chenfeng Sun Wenxing Chen Meng zhang Niannian Liu qinglin zhang Liqing Xu Zhengrong Luo National Key Laboratory for Germplasm Innovation&Utilization of Horticultural Crops Huazhong Agricultural UniversityWuhan 430070China

Proanthocyanidins(PAs) are specialized metabolites that infuence persimmon fruit quality.Normal astringent(A)-type and non-astringent(NA)-type mutants show significant variation in PA accumulation, but the infuencing mechanism remains unclear. In this study, among the six identified DTXs/MATEs proteins associated with PA accumulation, we observed that allelic variation and preferential transport by Dk DTX5/MATE5 induced variation in PA accumulation for A-type and NA-type fruit. The expression pattern of Dk DTX5/MATE5 was correlated with PA accumulation in NA-type fruit. Upregulation and downregulation of Dk DTX5/MATE5 promoted and inhibited PA accumulation, respectively, in the NA-type fruit. Interestingly, transporter assays of Xenopus laevis oocytes indicated that Dk DTX5/MATE5 preferentially transported the PA precursors catechin, epicatechin, and epicatechin gallate, resulting in their increased ratios relative to the total PAs, which was the main source of variation in PA accumulation between the A-type and NA-type. The allele lacking Ser-84 in Dk DTX5/MATE5 was identified as a dominantly expressed gene in the A-type and lost its transport function. Site-directed mutagenesis revealed that Dk DTX5/MATE5 binds to PA precursors via Ser-84. These findings clarify the association between the transporter function of Dk DTX5/MATE5 and PA variation, and can contribute to the breeding of new cultivars with improved fruit quality.

关键词： astringency DTX/MATE persimmon(Diospyros kaki Thunb.) proanthocyanidins(PAs) tonoplast transmembrane

Analysis of the Antidepressant Effects and Mechanisms of Icariin II Based on The GABAergic Nervous System

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Journal of Clinical and Nursing Research 2024年第3期8卷 61-65页

作者： Hongchen Huang qinglin Yu Tong Zhao Yijian zhang Kunming Medical University Kunming 650500Yunnan ProvinceChina

This article summarized the research progress on the antidepressant mechanism of icariin II,mainly elaborating on its mechanism from five aspects:GABAergic nervous system,inflammatory response,oxidative stress,neurotrophic factors,and neurotransmitters in the brain.Its clinical application value was further explored to provide a theoretical basis for the development and utilization of icariin II in treating depression.

关键词： GABA Icariin II Depression Inflammatory response

Confluence of asymmetric catalysis and electrosynthesis in sustainable chemical transformations

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Science China Chemistry 2023年

作者： qinglin zhang Kang Liang Chang Guo Hefei National Research Center for Physical Sciences at the Microscale and Department of Chemistry University of Science and Technology of China

Electrosynthesis has gained widespread recognition for its extraordinary ability to precisely control the redox process.This outstanding capability enables the direct conversion of non-functionalized substrates into reactive intermediates by utilizing easily accessible starting materials, eliminating the need for preliminary functionalization procedures and allowing for unconventional bond activations. Electrosynthesis, by utilizing electricity as a clean oxidant or reductant under electrochemical conditions, offers environmentally friendly conditions, remarkable selectivity, and distinctive reaction modes.

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鄂尔多斯盆地西南缘浅埋藏储层致密化成因

中国石油大学学报（自然科学版） 2024年第2期48卷 24-36页

作者：张英男白青林束青林路智勇张戈窦祥骥李真何之明青岛理工大学土木工程学院山东青岛266520 中国石化胜利油田分公司现河采油厂山东东营257068 中国石化胜利油田分公司山东东营257061 中国石化江汉油田分公司湖北潜江433100 常州大学石油与天然气工程学院江苏常州213164

鄂尔多斯盆地西南缘镇原地区三叠系延长组8段细粒砂岩在较浅的埋藏条件下便发生了致密化。综合利用岩心分析、铸体薄片、扫描电镜与图像分析等技术,对其孔喉及成岩特征进行分析。结果表明:储层的成分及结构成熟度较低,孔隙结构以细孔—... 详细信息

鄂尔多斯盆地西南缘镇原地区三叠系延长组8段细粒砂岩在较浅的埋藏条件下便发生了致密化。综合利用岩心分析、铸体薄片、扫描电镜与图像分析等技术,对其孔喉及成岩特征进行分析。结果表明:储层的成分及结构成熟度较低,孔隙结构以细孔—微细喉型为主,压实作用强烈,并且具有多期胶结与多期溶解的特征。以储层的“埋藏史-油气充注史-成岩演化序列-孔隙结构”为约束条件对储层的致密化定量表征发现,长8段在稳定的构造背景与辫状河三角洲环境的控制下,形成了细粒、富含塑性颗粒且高杂基含量的沉积,配合其后的快速埋深造成了强烈压实,其对储层致密化的贡献值为85%。成岩环境的多期变化造成了富集不同盐类的孔隙流体对储层的强烈胶结作用,对储层致密化贡献值为40.8%。早期绿泥石膜对颗粒的保护、稳定的构造背景及顶底板围岩处的硅质与钙质胶结层对孔隙流体活动的限制、过早的低渗和远离盆地生烃中心造成的缺乏酸性流体持续性注入等导致了溶蚀作用较弱,对储层致密化的抑制值仅为26.1%,且形成的次生孔喉易被后期胶结物充填。构造、沉积、成岩作用及其与油气充注在时空的耦合关系造成了长8段储层在浅埋藏条件下的致密化。

关键词：镇原地区延长组8段致密砂岩致密化定量表征成岩环境

Controllable Vapor Growth of Large-Area Aligned CdS_xSe_(1-x) Nanowires for Visible Range Integratable Photodetectors

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Nano-Micro Letters 2018年第4期10卷 33-41页

作者： Muhammad Shoaib Xiaoxia Wang Xuehong zhang qinglin zhang Anlian Pan Key Laboratory for Micro-Nano Physics and Technology of Hunan Province State Key Laboratory of Chemo/Biosensing and Chemometrics College of Materials Science and Engineering Hunan University

The controllable growth of large area band gap engineered-semiconductor nanowires(NWs) with precise orientation and position is of immense significance in the development of integrated optoelectronic devices. In this study, we have achieved large area in-plane-aligned CdS_xSe_(1-x) nanowires via chemical vapor deposition method. The orientation and position of the alloyed CdS_xSe_(1-x)NWs could be controlled well by the graphoepitaxial effect and the patterns of Au catalyst. Microstructure characterizations of these as-grown samples reveal that the aligned CdS_xSe_(1-x)NWs possess smooth surface and uniform diameter. The aligned CdS_xSe_(1-x)NWs have strong photoluminescence and high-quality optical waveguide emission covering almost the entire visible wavelength range. Furthermore, photodetectors were constructed based on individual alloyed CdS_xSe_(1-x)NWs. These devices exhibit high performance and fast response speed with photoresponsivity ～670 A W^(-1) and photoresponse time ～76 ms. Present work provides a straightforward way to realize in-plane aligned bandgap engineering in semiconductor NWs for the development of large area NW arrays,which exhibit promising applications in future optoelectronic integrated circuits.

关键词： Graphoepitaxial effect Bandgap engineering CdSxSe1-x nanowires Optical waveguide Photodetectors

气腹或/和体位因素对腹腔镜手术患者每搏量变异度的影响

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中华麻醉学杂志 2024年第4期44卷 454-456页

作者：侯振环张青林北京市通州区妇幼保健院麻醉科北京101199 首都医科大学附属北京妇产医院麻醉科北京100026

目的评价腹腔镜手术中二氧化碳气腹或/和体位因素对每搏量变异度(SVV)的影响。方法择期腹腔镜手术患者20例,常规全身麻醉诱导气管插管术后,行机械通气,潮气量8 ml/kg,呼吸频率8~12次/min。维持全身麻醉,于无气腹平卧位(T_(1))、无气腹... 详细信息

目的评价腹腔镜手术中二氧化碳气腹或/和体位因素对每搏量变异度(SVV)的影响。方法择期腹腔镜手术患者20例,常规全身麻醉诱导气管插管术后,行机械通气,潮气量8 ml/kg,呼吸频率8~12次/min。维持全身麻醉,于无气腹平卧位(T_(1))、无气腹头低脚高位15°(T_(2))、气腹压(IAP)12 mmHg平卧位(T_(3))、IAP 12 mmHg头低脚高位15°(T_(4))、IAP 15 mmHg平卧位(T_(5))和IAP 15 mmHg头低脚高位15°(T_(6))时,采用Vigileo/FloTrac系统监测每搏量(SV)和SVV。结果与T1时比较,T2时SV和SVV差异无统计学意义(P>0.05);与T_(1)及T_(2)时比较,T_(3-6)时SVV明显升高,SV明显降低(P0.05),而SVV均明显升高(P<0.05)。结论尽管体位因素对SVV无明显影响,但二氧化碳气腹因素影响较大,提示SVV不适宜评估腹腔镜手术时的容量状态。

关键词：每搏输出量血量监测,手术中气腹,人工体位

超声处理制备的生物可降解Zn-1Mg-0.5Ca合金的微观组织与腐蚀行为

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材料科学与工程学报 2024年第1期42卷 52-60,98页

作者：张蛟魏敏李庆林兰州理工大学材料科学与工程学院甘肃兰州730000

锌合金不仅具有良好的生物相容性,而且还有较好的降解行为,成为近些年来国内外研究者关注的热点。但是,不管在力学性能上,还是在腐蚀性能上,铸态锌合金皆不具备人体植入金属材料的条件。所以,为了提升与优化锌合金的力学性能,同时符合... 详细信息

锌合金不仅具有良好的生物相容性,而且还有较好的降解行为,成为近些年来国内外研究者关注的热点。但是,不管在力学性能上,还是在腐蚀性能上,铸态锌合金皆不具备人体植入金属材料的条件。所以,为了提升与优化锌合金的力学性能,同时符合植入人体后的腐蚀速率需求,本实验研究了不同超声功率(300 W,600 W,900 W)处理对的Zn-1Mg-0.5Ca合金微观组织及腐蚀性能的影响。研究结果表明:随着超声功率的增加,Zn-1Mg-0.5Ca的初生α-Zn树枝晶,片层的共晶Mg2Zn11相以及块状的CaZn13相被有效细化,初生α-Zn相由粗大的树枝晶转变为细小的等轴枝晶。粗大的多边形状CaZn13相被细化为细小的粒状,平均尺寸从34μm减小到5μm,片层的共晶Mg2Zn11相转变成细小的棒状和粒状。电化学测试表明:未经超声处理的Zn-1Mg-0.5Ca合金的腐蚀速率最低,为0.190 mm·a-1。随着超声功率的增加,合金的腐蚀速率逐渐增加,当超声功率达到900 W时,合金的腐蚀速率达到了0.490 mm·a-1。将样品浸泡15 d后的实验发现,未经超声处理的Zn-1Mg-0.5Ca合金的腐蚀速率低于超声处理合金的腐蚀速率,且随着超声功率的增加,合金腐蚀速率从0.144 mm·a-1增加到0.263 mm·a-1。

关键词： Zn-1Mg-0.5Ca 超声处理微观组织降解速率