有机噻吩分子器件的研究进展

本文对分子电子学器件的发展历程作了简要回顾,着重阐述了基于有机噻吩的分子器件的研究进展,指出了噻吩分子器件研究过程中有待解决的一些问题,希望对噻吩分子器件的研究提供一个有意义的参考。     

超分子材料研究进展

本文综述了超分子材料的发展概况,并介绍了超分子器件、超分子液晶、超分子生物材料和超分子纳米材料等超分子化技术的研究进展,展望了超分子材料的发展前景及其开发应用潜力。     

富勒烯(C60)衍生物分子器件的研究与应用

介绍了富勒烯衍生物分子器件在分子导线,分子开关和分子储存器的研究进展,展望了分子器件发展前景。     

化学领域的前沿──超分子化学

超分子化学是一个蓬勃发展的化学新领域，本文综述了超分子化学发展概况，重点介绍了分子识别、分子自组装、超分子材料、超分子器件及超分子催化方面的新成果，简明阐述了超分子体系形成的理论基础，同时引入了分子光子学、分子电子学、分子离子学、超分子科学等前沿学科。     

含三苯胺的二苯乙烯化合物的合成及其电致发光性能

电致发光器件在光通讯、光信息处理、视频器件、测控仪器等光电子领域有着广泛而重要的应用价值.无机半导体二极管、半导体粉末、半导体薄膜等电致发光器件尽管已取得了令人注目的成就,但由于其复杂的器件制备工艺,高驱动电压、低发光效率,不能大面积平板显示,能耗较高以及难以解决短波长(如蓝光)等问题,使得无机电致发光材料的进一步发展受到一定的影响.相比之下,有机化合物可通过分子设计的方法合成数量巨大、种类繁多的有机化合物发光材料,使得有机材料构成的电致发光器件有着众多的优势,并成为目前电致发光领域的前沿研究课题之一.有关…     

智能型水凝胶

介绍了不同响应的智能水凝胶的分类,同时综述了分子器件、调光材料和生物医学三方面的应用以及智能水凝胶的最新发展。     

以芳香硫醚为桥链的三体化合物的荧光分子开关性能

将一些发色团分子组装成具有特定功能的分子器件,是近年来随超分子化学和分子信息科学兴起而十分活跃的领域［１］,其中具有逻辑功能的光控开关器件是下一代分子计算机的核心,它们可在分子水平实现信息的存储和数据的处理、传输［２］．国内外这方面的研究主要有顺反异...     

吩噁嗪-吩噻嗪基双D染料的光伏性能研究

将N-苯基吩噁嗪单元连在吩噻嗪单元的7号位上,以噻吩为π单元,氰基乙酸为A单元,构成一种新型的D-D-π-A型染料分子PTZ-4。通过光物理和电化学性能测试,分析染料分子的光捕获能力和分子能级分布。同时,将PTZ-4染料应用到DSSC中,测试器件光伏性能。结果表明,该染料在可见光区有着较好的光捕获能力,在300~500 nm间有较大的吸收。分子的能级符合DSSC的要求,且其器件的光电转换效率为4.18%。     

光催化水氧化分子器件研究进展

利用超分子组装体系模拟植物光合作用实现光催化氧化水制氢是解决能源危机和环境问题的一大构想。介绍了超分子体系利用光能催化水氧化分解的基本原理,总结阐述了光催化剂的催化过程及应用,对光催化水氧化分子器件的发展现状进行了介绍,分析了其中的缺陷,就其发展方向提出了展望。     

分子钳化学研究的新进展

分子钳化学是当今化学学科研究的热点之一.介绍了分子钳化合物的结构、应用及新进展,重点综述了分子钳化合物的合成、分子钳对手性分子及阴离子的识别作用、分子钳对中性分子的识别作用,并对其应用前景进行了展望,期望能在医药学、生命科学、材料科学、环境科学、分子器件、生物传感器、仿生催化及分析分离科学中得到更广泛的应用.     

Molecular junctions: from tunneling to function

Thanks to the development of appropriate experimental techniques, molecular devices and their electrical transport properties have recently been the focus of a major research effort. This brief review describes how individual molecules can be contacted with metallic electrodes to form molecular junctions and addresses their basic formation mechanisms. An extension to molecular junctions networks is also discussed. Functionality could be demonstrated in such systems, and examples where conductance modulation using light or chemical stimuli was achieved will be presented.     

全氟环戊二芳基乙烯多功能分子开关的研究进展

全氟环戊二芳基乙烯是近年来国内外备受关注的一类光致变色化合物.其优良的热稳定性、抗疲劳性,使其很有可能成为一种新型的超高密度信息存储、分子开关及光通信材料.主要介绍了该类化合物的结构异构所表现的不同特性的光/热控分子开关、电化学开关、荧光开关、手性开关和液晶等分子开关,并展望了该类化合物的发展前景.     

小分子给体型有机光伏材料

小分子光伏材料具有化学结构确切、易于纯化以及合成可重复性好的特点,并且相对于聚合物,小分子材料具有相对明确的结构-性质关系,因而其理化性质的可调节性更强。另一方面,小分子材料可适用于不同的器件制备工艺,例如真空蒸镀或湿法工艺。当今研究人员已合成了大量的小分子材料作为电子给体应用于有机太阳能电池研究中,基于此类材料的单异质结器件最高效率已达到了6.7%。对不同类型的电子给体型小分子光伏材料近期研究进展进行了综述,并对此类材料的未来发展进行了探讨。     

Dynamic Functional Molecular Systems: From Supramolecular Structures to Multi‐Component Machinery and to Molecular Cybernetics

This essay highlights the role of single and multiple reversible self‐sorting events for the development of responsive multi‐component structures as well as multi‐state transformations, devices and machinery. Recent examples illustrate how distinct molecular devices are spatiotemporarily interconnected by chemical signaling to act as integrated machinery and highlight the enormous potential of molecular cybernetics.     

Abgasnachbehandlung in mobilen Systemen: Stand der Technik,Herausforderungen und Perspektiven

Looking at exhaust‐gas after‐treatment systems in its entirety leads to further improvement of emission control devices and to the accomplishment of future challenges such as lower legislative emission limits, new fuels, and more efficient engine concepts. This article provides an overview on the state‐of‐the art mobile exhaust‐gas after‐treatment devices. Current and future challenges are discussed in the light of present approaches such as hierarchical modeling reaching from DFT computations of molecular processes to CFD simulation of entire lines of exhaust‐gas cleaning devices, close‐to‐reality emission control test benches and aging procedures, on‐board diagnostics, and catalyst characterization at operating conditions and preferentially all length scales. In future, knowledge‐based robot‐controlled preparation and dynamic models coupled with information from real operation will significantly support research and development.     

Molecular electronics. Synthesis and testing of components

Molecular electronics involves the use of single or small packets of molecules as the fundamental units for computing. While initial targets are the substitution of solid-state wires and devices with molecules, long-range goals involve the development of novel addressable electronic properties from molecules. A comparison of traditional solid-state devices to molecular systems is described. Issues of cost and ease of manufacture are outlined, along with the syntheses and testing of molecular wires and devices.     

Conjugated polyelectrolytes: A new class of semiconducting material for organic electronic devices

This feature article presents a short review of the recent developments in the synthesis of conjugated polyelectrolytes (CPEs) along with their applications in organic optoelectronic devices with particular focus on the molecular structures of CPEs with ionic functionality, synthetic approaches, and their utilization as an interfacial layer. The orthogonal solubility of the CPEs allows the simple preparation of multilayer organic devices by solution casting on top of a nonpolar organic photoactive layer without disturbing the interfaces, showing their effectiveness in tuning the electronic structures at the interfaces for improving the charge carrier transport and resulting device properties. These achievements highlight the dynamic nature of CPEs and their applicability to a wide range of optoelectronic devices.     

Nanoparticles of alkylglyceryl dextran and poly(ethyl cyanoacrylate) for applications in drug delivery: Preparation and characterization

Toward the development of drug carriers that are capable of crossing biological membranes, controlled emulsion polymerization has been utilized to produce nanoparticulate carriers from the combination of poly(alkyl cyanoacrylate) and alkylglyceryl dextran to a molecular structure designed to combine the nonimmunogenic and stabilizing properties of dextran with the demonstrated permeation enhancing ability of alkylglycerols. To this aim, a systematic series of alkylglyceryl dextrans have been synthesized and functionalized with ethyl or butyl cyanoacrylates to form stable polymeric nanocarriers (100–500?nm). Results of investigations into their capability to act as controlled-release devices and their cytotoxicity against bEnd3 cells are reported.     

Molecular photovoltaics in nanoscale dimension

This review focuses on the intrinsic charge transport in organic photovoltaic (PVC) devices and field-effect transistors (SAM-OFETs) fabricated by vapor phase molecular self-assembly (VP-SAM) method. The dynamics of charge transport are determined and used to clarify a transport mechanism. The 1,4,5,8-naphthalene-tetracarboxylic diphenylimide (NTCDI) SAM devices provide a useful tool to study the fundamentals of polaronic transport at organic surfaces and to discuss the performance of organic photovoltaic devices in nanoscale. Time-resolved photovoltaic studies allow us to separate the charge annihilation kinetics in the conductive NTCDI channel from the overall charge kinetic in a SAM-OFET device. It has been demonstrated that tuning of the type of conductivity in NTCDI SAM-OFET devices is possible by changing Si substrate doping. Our study of the polaron charge transfer in organic materials proposes that a cation-radical exchange (redox) mechanism is the major transport mechanism in the studied SAM-PVC devices. The role and contribution of the transport through delocalized states of redox active surface molecular aggregates of NTCDI are exposed and investigated. This example of technological development is used to highlight the significance of future technological development of nanotechnologies and to appreciate a structure-property paradigm in organic nanostructures.     

On the phase behaviour of organic semiconductors

The physical organisation, from the molecular to the macroscale, of functional organic matter such as polymer semiconductors can profoundly affect the properties and features of the resulting architectures and their consequent performance when used as active layers in organic optoelectronic devices, including organic thin‐film field‐effect transistors, organic light‐emitting diodes or organic photovoltaic cells. Here, we present a survey on the principles of structure development from the liquid phase of this interesting and broad class of materials with focus on how to manipulate their phase transformations and solid‐state order to tailor and manipulate the final ‘morphology’ towards technological and practical applications. Copyright © 2012 Society of Chemical Industry