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详细综述了一些用于制备分子尺寸器件的化学策略的设计、发展和演示.其设计思想是通过各式各样的光诱导的电子、能量和质子转移机理,氧化还原反应,构象变化以及超分子原理,分别将2个信息量丰富而结构又比较简单的四硫富瓦烯和光致变色的螺吡喃分子,与它们性质互补的不同组分集成在一起来构建功能分子器件,用于完成快速的数字处理和传输.首先凭借四硫富瓦烯丰富的电化学性质,大量的D-A-D超分子和环轴烃分子已经被设计并成功合成.时间分辨的吸收和荧光光谱研究表明,这些D-A-D超分子发生分子内的光诱导的电子转移反应的能力,可以通过不同的桥联基团进行有效调控.STM研究则首次发现并开辟了环轴烃分子在纳米记录和高密度信息储存方面的应用研究.同时,也详细描述了如何充分利用光致变色的螺吡喃分子独特的电子、能量和质子转移能力去设计超分子组合,并通过光和适当的化学试剂来控制这些组合的吸收、荧光和导电性质的方法.根据这些组合的光谱和电化学行为,构建了一系列新型的分子开关、逻辑门和分子回路.最后,展示了用于设计合成新类型开环结构稳定的荧光螺吡喃分子的独特见解.
The design, development and demonstration of some chemical strategies for the preparation of molecular-size devices are reviewed in detail.The design concept is based on a wide variety of photoinduced electron, energy and proton transfer mechanisms, redox reactions, conformational changes and supramolecular Principle, respectively, two informative and relatively simple structure of tetrathiafulvalene and photochromic spiropyran molecules with their complementary properties of different components together to build functional molecular devices used to complete the rapid Of the digital processing and transmission.First, due to the rich electrochemical properties of tetrathiafulvalene, a large number of DAD supramolecular and cyclo-axial hydrocarbon molecules have been designed and successfully synthesized.Densolved absorption and fluorescence spectroscopy studies have shown that these DAD supramolecular The ability of light-induced intramolecular electron-induced electron transfer can be effectively controlled by different bridging groups. For the first time, the STM study has found and opened up the application research of ring-axis hydrocarbon molecules in nano-recording and high-density information storage. At the same time, it also describes in detail how to make full use of photochromic spiropyran molecules unique electron, energy and proton transfer ability to set Based on the spectral and electrochemical behavior of these combinations, a series of novel molecular switches, logic gates and molecules were constructed based on the combinations of supramolecules and the control of the absorption, fluorescence and conductivity of these combinations by means of light and appropriate chemical reagents Loop Finally, a unique insight into the design of fluorescent spiropyrane molecules for the synthesis of new types of ring-opened structures is demonstrated.