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1.
分子自组装及其在传感器中的应用   总被引:6,自引:0,他引:6  
阐述了分子自组装的特点及其在化学、生物传感器中的应用。简要介绍了传感器的工作原理。以当前的研究成果为例,介绍了分子自组装在传感器设计、制备及其在传感器性能中的作用。最后,对分子自组装应用于传感器目前存在的问题及今后的发展前景进行了评述。  相似文献   

2.
分子自组装体系的影响因素及其在纳米材料中的应用   总被引:1,自引:0,他引:1  
介绍了分子自组装体系的影响因素以及分子自组装技术在纳米材料制备方面的应用,并对聚合物自组装体系及研究进展作了综述.  相似文献   

3.
以硅烷和硫醇两种体系为代表介绍了自组装单分子膜的结构和形成机理,指出自组装单分子膜具有单分子层性质和灵活的分子设计特性,综述了其作为表面结构和性质研究工具的最新进展。  相似文献   

4.
殷杰 《材料导报》2015,29(13):77-83, 97
超分子化学自组装的重要研究内容是组装体的分子设计、合成及其组装过程。为了构筑和调控某些具有特殊功能的超分子自组装体,针对不同的应用要求,可引入具有独特光电性质及刚性的有机π-共轭分子作为基本组装单元,通过超分子弱相互作用组装成功能性纳米/微米材料。总结了近年来国内外有机共轭分子的自组装行为,并介绍了其在纳米/微米光波导材料、有机小分子光电器件、分子机器及超分子传感器中的相关应用。  相似文献   

5.
分子自组装技术基底材料的研究进展   总被引:1,自引:1,他引:0  
李家桐  陈敏  王长伟  孙玉梅 《材料导报》2011,25(11):76-78,83
综述了用于分子自组装技术的基底材料的种类及自组装分子膜的制备过程,结合多种表征方法的测试结果介绍了各类自组装分子膜的吸附特性、组装机理、功能特点、应用领域及影响薄膜性能的各种因素,还介绍了在自组装单分子膜表面制备其它无机功能薄膜的研究结果。  相似文献   

6.
文章综述了以硅为基底的自组装有机单层膜在分子电子器件中的应用,重点介绍了自组装膜的电子传导性,包括各种理论模型,如隧穿效应、热电子激发、Poole-Frankel激发以及跨越传导。此外,以烷基链(σ-分子),共轭链(π-分子)体系组成的自组装膜为基础的各种分子电子器件,如二极管、共振隧穿二极管,分子记忆和分子晶体管的概念、结构及工作原理也一并被讨论。  相似文献   

7.
分子自组装研究进展   总被引:7,自引:0,他引:7  
分子自组装在生物工程技术上的建模、分子器件、表面工程以及纳米科技领域已经有很广泛的应用.在未来的几十年中,分子自组装作为一种技术手段将会在新技术领域产生巨大的影响.在这篇文章里,我们介绍了分子自组装技术的定义、基本原理、分类、影响因素、表征手段等,并阐述了分子自组装技术目前的研究进展,展望了分子自组装技术的应用前景.  相似文献   

8.
分子与纳米自组装材料的研究进展   总被引:1,自引:0,他引:1  
对近年来分子与纳米自组装材料方面的研究进行了总结,分别从小分子自组装,大分子自组装,纳米自组装三个方面进行综述,展示了该领域的一些重要进展和研究结果的应用前景。  相似文献   

9.
介绍了自组装技术的基本原理与特点 ,并分析影响自组装体系形成的因素 ,论述了静电自组装技术和化学自组装薄膜技术及其应用  相似文献   

10.
王生杰  范晓东 《材料导报》2004,18(Z1):197-199
综述了分子自组装技术的特点及研究现状,展望了分子自组装技术在生物医学、物理化学、纳米材料等方面的应用前景.  相似文献   

11.
Self-assembly is a powerful tool for constructing supramolecular materials for many applications, ranging from energy harvesting to biomedicine. Among the methods to prepare supramolecular materials for biomedical applications, enzyme-instructed self-assembly (EISA) has several advantages. Herein, the unique properties and advantages of EISA in preparing biofunctional supramolecular nanomaterials and hydrogels from peptides are highlighted. EISA can trigger molecular self-assembly in situ. Therefore, using overexpression enzymes in disease sites, supramolecular materials can be formed in situ to improve the selectivity and efficacy of the treatment. The precursor may be involved during the EISA process, and it is actually a two-component self-assembly process. The precursor can help to stabilize the assembled nanostructures of hydrophobic peptides formed by EISA. More importantly, the precursor may determine the outcome of molecular self-assembly. Recently, it was also observed that EISA can kinetically control the peptide folding and morphology and cellular uptake behavior of supramolecular nanomaterials. With the combination of other methods to trigger molecular self-assembly, researchers can form supramolecular nanomaterials in a more precise mode and sometimes under spatiotemporal control. EISA is a powerful and unique methodology to prepare supramolecular biofunctional materials that cannot be generated from other common methods.  相似文献   

12.
Self-assembly of molecular or nonmolecular components by non-covalent interactions offers an invaluable tool for the preparation of discrete nanostructures and extended 2D and 3D materials, which are often not accessible by any other fabrication process. In this article we summarize the most recent advances in the generation of nanomaterials such as self-assembled monolayers (SAMs) and structures formed from amphiphilic molecules, colloids, peptides, and polymers by nontemplated self-assembly either at the solid state or in solution. The current status of templated self-assembly and the use of self-assembled structures as template and for patterning other materials is also covered. A special emphasis is placed on strategies presenting either original and somehow exploratory approaches, eventually combining bottom-up and top-down methods, or that concern methods for the production of materials with potential application, e.g., in photonics, as sensors, for drug delivery and electric and magnetic devices. In all the sections, we outline self-organization and applications enabled with self-separated block copolymers.  相似文献   

13.
纳米艺术是指使用纳米科技手段或方法创作的纳米尺度的艺术,其创作手段包括分子/原子自组装、化学/物理气相沉积、扫描探针显微镜、计算机辅助分子模拟等,展现手法则往往依赖于电子显微镜、扫描探针显微镜或分子模拟技术进行成像。目前的纳米艺术主要表现为纳米绘画与纳米雕塑,但未来也不排除视频和音频形式的出现。纳米艺术家除了要具备常规艺术家的素养外,还要掌握用于创作纳米艺术的技术与设备,知晓纳米材料相关的化学、物理学、材料学知识,拥有纳米科技相关的工作经验和知识积累,具备相关专业软件使用与计算图形/图像处理的能力。  相似文献   

14.
聚合物一维纳米材料的研究进展   总被引:1,自引:0,他引:1  
综述了聚合物纳米线和纳米管等聚合物一维纳米材料的制备方法、机理和应用。聚合物纳米线的制备方法主要有静电纺丝法、多孔模板法、自组装法三种。聚合物纳米管的制备包括多孔模板法、线模板法、自组装法等方法。本文评述了其研究现状,展望了其可能的应用前景。  相似文献   

15.
自组装法制备聚合物纳米复合膜的新进展   总被引:7,自引:0,他引:7  
介绍了自组装法制备聚合物纳米复合膜的几种最新技术;化学吸附法、分子沉积法、旋涂法。这些方法操作简单,膜的结构稳定性较高,利用它们可以制备各种功能化的聚合物纳米复合膜,从而实现薄膜的光、电、磁、非线性光学等的功能化。由此,这些方法受到国内外的广泛重视。  相似文献   

16.
纳米材料在纳米尺度展现出的特殊性质, 相较于宏观尺度材料表现出众多优异特性, 在力学、声学、光学、磁学、电学、热学等各种领域具有良好的应用前景。纳米材料的仿生自组装技术模拟活体生命活动, 使纳米材料基于非共价键的相互作用, 自发形成稳定结构, 现已成为制备纳米材料的主要方法之一。仿生自组装技术是“自上而下”方法中的重要技术手段, 这种合成方式有望代替传统的“自上而下”加工技术, 实现单个原子或分子在纳米尺度上构造特定结构和功能的器件。另外, 仿生自组装技术虽然以化学过程为主, 但又有物理过程, 并且结合了“仿生学”的优点, 具有定向构造纳米材料的特点, 是众多交叉学科的热门研究手段。本文重点介绍了纳米材料在形貌和性能调控中不同的仿生自组装合成策略, 包括屏蔽效应的位相选择自组装、双相界面协同效应的仿生自组装、场诱导定位效应的功能器件一体化制备、光诱导自组装以及羟基氢键驱动的分相自组装, 总结了仿生自组装纳米材料的特性, 归纳了自组装技术在传感器、表面拉曼散射、生物医疗等领域的应用, 并对纳米材料仿生自组装技术的发展前景进行了展望。  相似文献   

17.
在简要介绍纳米颗粒的基本物理-化学性能及其制备现状的基础上,着重论述了纳米颗粒自组装的类型及原理,总结了纳米颗粒自组装在锂离子电池上的应用研究进展,并指出该应用中存在制备效率低、污染较大等问题,提出今后工作将集中在开发合适组装单元、揭示自组装基本原理、简化制备程序等方面,认为纳米材料合成过程中实现多层次/功能电池结构调控是未来发展的重要方向之一。  相似文献   

18.
Mesoporous silica/cotton fiber composite materials have been prepared in situ by using pluronics P123 (EO20PO70EO20) as template, tetraethyl orthosilicate as silica source and degreasing cotton as supporter. In order to avoid the hydrolysis of cotton fiber in a strong acidic media during the hydrothermal treatment, two kinds of methods were used to control the acidity of the reaction media. One was to adjust the pH to 5 after self-assembly in a strong acidic media; the other was a two-step route containing the pre-hydrolysis of TEOS and self-assembly in a weak acidic media. The resulting shaped composite materials presented the morphology of cotton fiber, and the silica particles mainly covered the surfaces of cotton fibers. These silica particles possessed a slightly ordered pore structure or a well ordered SBA-15 structure according to the difference in the synthetic methods. After modification with tetraethylenepentamine, these shaped composite materials exhibited considerable CO2 adsorption capacity. The use of cotton fiber has the advantages of shaping the powdery materials, dispersing the silica particles and avoiding the formation of moisture and sticky solid surfaces by overloaded tetraethylenepentamine.  相似文献   

19.
Self-assembled nanoscale ferroelectrics   总被引:2,自引:0,他引:2  
Multifunctional ferroelectric materials offer a wide range of useful properties, from switchable polarization that can be applied in memory devices to piezoelectric and pyroelectric properties used in actuators, transducers and thermal sensors. At the nanometer scale, however, material properties are expected to be different from those in bulk. Fundamental problems such as the super-paraelectric limit, the influence of the free surface, and of interfacial and bulk defects on ferroelectric switching, etc., arise when scaling down ferroelectrics to nanometer sizes. In order to study these size effects, fabrication methods of high quality nanoscale ferroelectric crystals have to be developed. The present paper briefly reviews self-patterning and self-assembly fabrication methods, including chemical routes, morphological instability of ultrathin films, microemulsion, and self-assembly lift-off, employed up to the date to fabricate ferroelectric structures with lateral sizes in the range of few tens of nanometers.  相似文献   

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