检索结果-南通市图书馆

Molecule-based vertical transistor via intermolecular charge transport throughπ-πstacking

Nano Research 2024年第5期17卷 4573-4581页

作者： Cheng Liu Cheng Fu Lingyu Tang Jianghua Wu Zhangyan Mu Yamei Sun Yanghang Pan Bailin Tian Kai Bao Jing Ma Qiyuan He mengning ding Key Laboratory of Mesoscopic Chemistry School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China Jiangsu Key Laboratory of Advanced Organic Materials School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China National Laboratory of Solid State Microstructures Jiangsu Key Laboratory of Artificial Functional MaterialsCollege of Engineering and Applied SciencesCollaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093China Department of Materials Science and Engineering City University of Hong KongHong Kong 999077China

Theπ-πstacking is a well-recognized intermolecular interaction that is responsible for the construction of electron hopping channels in numerous conducting frameworks/***,the exact role ofπ-to-πchannels within typical single crystalline organic semiconductors remains unclear as the orientations of these molecules are diverse,and their control usually requires additional side chain groups that misrepresent the intrinsic properties of the original semiconducting ***,the construction of conduction channels with intrinsicπ-πstacking in the molecule-based device is crucial for the utilization of their unique transport characteristics and understanding of the transport *** this end,we present a molecular intercalation strategy that integrates two-dimensional layered materials with functional organic semiconductor molecules for functional molecule-based *** organic semiconductor molecules can be effectively intercalated into the van der Waals gaps of semi-metallic TaS_(2) withπ-πstacking configuration and controlled intercalant *** results show that the vertical charge transport in the stacking direction shows a tunneling-dominated mechanism that strongly depends on the molecular ***,we demonstrated a new type of molecule-based vertical transistor in which TaS_(2) andπ-πstacked organic molecules function as the electrical contact and the active channel,***/off ratios as high as 447 are achieved under electrostatic modulation in ionic liquid,comparable to the current state-of-the-art molecular *** study provides an ideal platform for probing intrinsic charge transport acrossπ-πstacked conjugated molecules and also a feasible approach for the construction of high-performance molecule-based electronic devices.

关键词： π-πstacking electrochemical intercalation organic semiconductor electrical transport tunneling field effect transistor

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Unravelling the critical role of surface Nafion adsorption in Ptcatalyzed oxygen reduction reaction by in situ electrical transport spectroscopy

引用

Science China Chemistry 2022年第11期65卷 2290-2298页

作者： Yamei Sun Jingyi Tian Zhangyan Mu Bailin Tian Qiulan Zhou Cheng Liu Shengtang Liu Qiang Wu mengning ding Key Laboratory of Mesoscopic Chemistry of MOE State Key Laboratory of Analytical Chemistry for Life SciencesSchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing210023China

Solid-state ionic conductor is a vital part in all electrochemical energy conversion devices. As a widely-applied protonconducting polymer and stabilizer for electrode preparation, Nafion has key applications in electrochemical devices operated under acidic conditions. Specific adsorption of Nafion on the catalyst surface is considered to result in partial loss of intrinsic activity in reactions such as oxygen reduction reaction(ORR), due to its comprehensive occupation of active sites. Many in situ characterization methods such as voltammetric fingerprinting and spectroscopic approaches have been used to explore the dynamic adsorption of Nafion on the electrode surface. However, most of current efforts have been focused on the behaviors of Nafion itself, with little attention paid to its effects on the adsorption of surface intermediates. Here, we employed the in situ electrical transport spectroscopy(ETS) to investigate Nafion adsorption on Pt catalysts and its effects on the ORR *** findings suggest that specific adsorption of Nafion results in the increased coverage of oxygen intermediates with weaker adsorption strength, which in turn plays a critical role in the reaction selectivity. The successful application of ETS on the dynamic characterization of reaction intermediates provides a novel perspective for catalyst design in ORR-related applications in future sustainable chemistry.

关键词： electrical transport spectroscopy Nafion adsorption oxygen reduction reaction platinum hydrogen peroxide

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Intercalation and hybrid heterostructure integration of two-dimensional atomic crystals with functional organic semiconductor molecules

引用

Nano Research 2020年第11期13卷 2917-2924页

作者： Wen He Han Zang Songhua Cai Zhangyan Mu Cheng Liu mengning ding Peng Wang Xinran Wang Key Laboratory of Mesoscopic Chemistry School of Chemistry and Chemical EngineeringNanjing UniversityNanjing210093China National Laboratory of Solid State Microstructures Nanjing UniversityNanjing210093China School of Electronic Science and Engineering and Collaborative Innovation Center of Advanced Microstructures Nanjing UniversityNanjing210093China Jiangsu Key Laboratory of Artificial Functional Materials College of Engineering and Applied Sciences and Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing210093China Department of Applied Physics The Hong Kong Polytechnic UniversityHung Hom999077KowloonHong KongChina Research Center for Environmental Nanotechnology(ReCENT) Nanjing UniversityNanjing210023China

Van der Waals(vdW)integration affords semiconductor heterostructures without constrains of lattice matching and opens up a new realm of functional devices by design.A particularly interesting approach is the electrochemical intercalation of two-dimensional(2D)atomic crystal and formation of superlattices,which can provide scalable production of novel vdW ***,this approach has been limited to the use of organic cations with non-functional aliphatic chains,therefore failed to take the advantage of the vast potentials in molecular functionalities(electronic,photonic,magnetic,etc.).Here we report the integration of 2D crystal(MoS_(2),WS_(2),highly oriented pyrolytic graphite(HOPG),WSe_(2) as model systems)with electrochemically inert organic molecules that possess semiconducting characteristics(including perylene-3,4,9,10-tetracarboxylic dianhydride(PTCDA),pentacene and fullerene),through on-chip electrochemical *** unprecedented long-range spatial feature of intercalation has been achieved,which allowed facile assembly of a vertical MoS_(2)-PTCDA-Si *** intercalated heterostructure shows significant modulation of the lateral transport,and leads to a molecular tunneling characteristic at the vertical *** general intercalation of charge neutral and functional molecules defines a versatile platform of inorganic/organic hybrid vdW heterostructures with significantly extended molecular functional building blocks,holding great promise in future design of nano/quantum devices.

关键词： transition metal dichalcogenide electrochemical intercalation perylene-3,4,9,10-tetracarboxylic dianhydride(PTCDA) organic semiconductor inorganic/organic heterostructure

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Superlattice Structure from Re-stacked NiFe Layer Double Hydroxides for Oxygen Evolution Reaction

引用

Chemical Research in Chinese Universities 2020年第4期36卷 680-684页

作者： LIU Shcngtang YANG Miao LIU Cheng TIAN Bailin DFNG mengning Key Laboratory of Mesoscopic Chemistn\School of Chemistry and Chemical Engineering Nanjing UniversityNanjing 210023P.R.China

Layer double hydroxides(LDHs)have drawn significant amount of rescarch attentions as a typical category of inorganic 2D materials,with facile synthetic methodologies and a wide range of applications in catalysis and energy storage[1,2].LDHs consist of positively charged brucite-like host layers containing M(OH),octahedra,while anions and solvation molecules filled the interlayer for charge ***.

关键词： Layer double hydroxide Self-assembly Superlattice Oxygene volution reaction

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

A field-effect approach to directly profiling the localized states in monolayer MoS2

引用

Science Bulletin 2019年第15期64卷 1049-1055页

作者： Hao Wu Yuan Liu Zeyu Deng Hung-Chieh Cheng Dehui Li Jian Guo Qiyuan He Sen Yang mengning ding Yun-Chiao Huang Chen Wang Yu Huang Xiangfeng Duan Department of Materials Science and Engineering University of CaliforniaLos AngelesCA90095USA Department of Chemistry and Biochemistry University of CaliforniaLos AngelesCA90095USA California NanoSystems Institute University of CaliforniaLos AngelesCA90095USA

A fundamental understanding of the charge transport mechanism in two-dimensional semiconductors(e.g., MoS2) is crucial for fully exploring their potential in electronic and optoelectronic devices. By using monolayer graphene as the barrier-free contact to MoS2, we show that the field-modulated conductivity can be used to probe the electronic structure of the localized states. A series of regularly distributed plateaus were observed in the gate-dependent transfer curves. Calculations based on the variable-range hopping theory indicate that such plateaus can be attributed to the discrete localized states near mobility edge. This method provides an effective approach to directly profiling the localized states in conduction channel with an ultrahigh resolution up to 1 meV.

关键词： Two-dimensional layered materials Field-effect transistor Localized states Electronic transport Conductivity plateau

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Quantitative Surface Plasmon Interferometry via Upconversion Photoluminescence Mapping

引用

Research 2019年第1期2019卷 551-562页

作者： Anxiang Yin Hao Jing Zhan Wu Qiyuan He Yiliu Wang Zhaoyang Lin Yuan Liu mengning ding Xu Xu Zhe Fei Jianhui Jiang Yu Huang Xiangfeng Duan Department of Chemistry and Biochemistry University of CaliforniaLos AngelesCalifornia 90095USA School of Chemistry and Chemical Engineering Beijing Institute of TechnologyBeijing 100008China Department of Materials Science and Engineering University of CaliforniaLos AngelesCalifornia 90095USA State Key Laboratory for Chemo/Biosensing and Chemometrics College of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082China Department of Physics&Astronomy Iowa State UniversityAmesIowa 50011USA California NanoSystems Institute University of CaliforniaLos AngelesCalifornia 90095USA

Direct far-field visualization and characterization of surface plasmon polaritons(SPPs)are of great importance for fundamental studies and technological *** probe the evanescently confined plasmon fields,one usually requires advanced near-field techniques,which is typically not applicable for real-time,high-throughput detecting or mapping of SPPs in complicated ***,we report the utilization of rare-earth-doped nanoparticles to quantitatively upconvert invisible,evanescently confined SPPs into visible photoluminescence emissions for direct far-field visualization of SPPs in a complicated *** observed interference fringes between the SPPs and the coherent incident light at the metal surface provide a quantitative measurement of the SPP wavelength and the SPP propagating length and the local dielectric *** thus creates a new signaling pathway to sensitively transduce the local dielectric environment change into interference periodicity variation,enabling a new design of directly measurable,spectrometer-free optical rulers for rapid,ultrasensitive label-free detection of various biomolecules,including streptavidin and prostate-specific antigen,down to the femtomolar level.

关键词： visible dielectric measurable

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

抗战时期巴黎《救国时报》广告传播特色研究

引用

现代广告 2022年第14期 38-45,63页

作者：丁蒙宁杨海军上海大学新闻传播学院上海200072

《救国时报》是抗战时期中国共产党在巴黎创办的机关报,办报宗旨是向海外侨胞宣传中国共产党建立抗日民族统一战线的主张,介绍中国人民英勇抗敌的事迹。《救国时报》广告内容生产延续了党报办报风格,带有鲜明的政治倾向。通过告白广告,... 详细信息

《救国时报》是抗战时期中国共产党在巴黎创办的机关报,办报宗旨是向海外侨胞宣传中国共产党建立抗日民族统一战线的主张,介绍中国人民英勇抗敌的事迹。《救国时报》广告内容生产延续了党报办报风格,带有鲜明的政治倾向。通过告白广告,阐释报刊广告的经营理念,传播抗战的政治主张;通过文化广告,宣传和介绍中国共产党领导中国人民坚持抗战的精神风貌及英勇事迹;通过商业广告的创意诉求,展现海外侨胞和商业经营者的爱国情怀。创新了党报广告海外经营模式,呈现出鲜明的时代特征。《救国时报》广告拓展与完善了党报广告形态,是研究我国抗战时期党报广告海外传播的珍贵史料。

关键词：党报广告《救国时报》抗日民族统一战线

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

微纳器件技术在电催化前沿研究中的应用进展

引用

中国科学：化学 2020年第5期50卷 566-582页

作者：潘扬航穆张岩丁梦宁介观化学教育部重点实验室南京大学化学化工学院南京210023

电催化在能源转化与存储方面有着广阔的应用前景,并已成为当今世界的研究热点.对于大多数电催化体系而言,其催化性能的优化与提升,都需倚赖活性中心的合理构建以及催化机制的精确描述.为此,测试手段的不断丰富可以极大促进电催化的深入... 详细信息

电催化在能源转化与存储方面有着广阔的应用前景,并已成为当今世界的研究热点.对于大多数电催化体系而言,其催化性能的优化与提升,都需倚赖活性中心的合理构建以及催化机制的精确描述.为此,测试手段的不断丰富可以极大促进电催化的深入研究与应用.近年来,微纳(器件)加工技术的不断成熟和跨学科发展为电催化材料和过程的研究提供了更精细的全新平台.本文针对电催化研究的不同方向,从结构表征与精准测量、场效应调控和电输运关联动力学三个方面总结了近年来微纳器件技术在电催化领域中的研究进展.最后,本文展望了微纳器件技术在电催化领域所面临的挑战及应用前景.

关键词：微纳器件电催化活性位点场效应电输运

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

MOFs衍生花状Fe–CoP@C用于高效析氧反应

引用

中国科学：化学 2022年第7期52卷 1140-1147页

作者：邢致源黄民松朱佳夏剑辉彭桂明丁梦宁卢章辉江西师范大学化学化工学院氟硅能源材料与化学教育部重点实验室南昌330022 南京大学化学化工学院介观化学教育部重点实验室南京210023

氧气析出反应(OER)迟滞的动力学严重制约着电解水产氢的实际应用.开发高效、稳定的非贵金属OER催化剂具有重要意义.本文采用水热、离子交换以及高温磷化方法,以Co_(3)O_(4)@Co–MOF花状结构为前驱体,成功制备了一种铁掺杂磷化钴与碳材... 详细信息

氧气析出反应(OER)迟滞的动力学严重制约着电解水产氢的实际应用.开发高效、稳定的非贵金属OER催化剂具有重要意义.本文采用水热、离子交换以及高温磷化方法,以Co_(3)O_(4)@Co–MOF花状结构为前驱体,成功制备了一种铁掺杂磷化钴与碳材料强耦合的3D微米花结构复合材料(Fe–CoP@C).功能化碳纳米片上负载的Fe–CoP纳米粒子,可促进与电解液的充分接触并暴露更多的催化活性位点.Fe元素的掺入优化了材料的电子结构,使材料表现出优异的OER催化活性.所制备的Fe–CoP@C催化剂只需259 mV的低过电势即可产生10 mA cm^(−2)的电流密度,Tafel斜率为48.24 mV dec^(−1).同时受益于纳米粒子与碳层之间强耦合作用,Fe–CoP@C表现出更快的反应动力学和更高的结构稳定性,复合材料在碱性溶液中可连续运行108 h,具有优异的长期稳定性.

关键词：金属有机框架磷化钴电催化氧气析出反应

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

低酒度紫薯米酒加工工艺优化及品质分析

引用

食品科技 2024年第3期49卷 96-104页

作者：廖敏熊富强丁巧巧袁梦宁绵阳师范学院生命科学与技术学院四川绵阳621000

以紫薯及糯米为原料制作低酒度紫薯米酒,筛选适合低酒度紫薯米酒酿造的酒曲。采用单因素试验和正交试验确立低酒度紫薯米酒固态发酵及后发酵工艺条件,并考察成品的感官指标、理化指标以及抗氧化活性。结果表明,适合低酒度紫薯米酒发酵... 详细信息

以紫薯及糯米为原料制作低酒度紫薯米酒,筛选适合低酒度紫薯米酒酿造的酒曲。采用单因素试验和正交试验确立低酒度紫薯米酒固态发酵及后发酵工艺条件,并考察成品的感官指标、理化指标以及抗氧化活性。结果表明,适合低酒度紫薯米酒发酵的酒曲为安琪甜酒曲;最佳紫薯米酒固态发酵工艺为:紫薯添加量30%、酒曲添加量0.8%、淋饭水量40%、发酵时间48 h;最佳紫薯米酒后发酵工艺为:料液比1:1、后发酵时间60 h、后发酵温度15℃。在此优化条件下,低酒度紫薯米酒的酒精度为4.7%vol,糖度为10.3°Bx;酒液呈玫红色,酒味与甜味协调;低酒度紫薯米酒的花青素含量为37.31 mg/L,经体外试验证实其具有一定的抗氧化能力。

关键词：紫薯米酒固态发酵后发酵工艺优化

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：