【作者】 胡娟；

【导师】 曲大辉；

【作者基本信息】 华东理工大学 ， 应用化学， 2012， 硕士

【摘要】 分子机器的响应方法有很多种,目前用荧光信号来表征分子机器的运动得到了广泛的研究。具有荧光信号输出的分子机器,在分子开关、逻辑门、光信息储存和光控分子数据处理方面,都有潜在的应用价值。白光响应,也就是白光作为输出信号来表征分子机器的运动,具有肉眼可辨的优势,不需要经过仪器检测就能直接判断。本论文主要涉及白光响应轮烷型分子机器中间体的合成研究探索。设计并制备了一系列基于三联吡啶-二苯乙烯衍生物的白光响应轮烷型分子机器的重要中间体,并对它们的光物理、化学性能做了详细的研究。另外还设计并合成了基于三联吡啶-二苯乙烯衍生物的荧光分子开关,将一些具有光学响应、电化学响应的基团,例如螺吡喃、二茂铁等功能基团引入三联吡啶-二苯乙烯衍生物体系,详细研究了它们的光物理化学性能以及它们在光化学、电化学以及离子等外界刺激下光物理化学性能的变化,探讨了它们在可组装和拆卸的聚合物、光电响应的荧光分子开关等方面的应用。同时,我们还将光致变色的二噻吩乙烯功能基团引入三联吡啶衍生物中,制备了光化学、离子双响应的具有高对比度荧光分子开关。更多还原

【Abstract】 The utilization of fluorescence signal as an output in rotaxane-type molecular machines has attracted much attention in recent years. Molecular machines with fluorescent outputs have potential applications in molecular switches, molecular logic gates, information-storage and data processing devices.In this thesis, much research work were focused on the synthesis exploration of rotaxane-type molecuar machines with white-light response, in which the shuttling motion of a macrocycle along the rotaxane thread can be indicated by on and off of a white light signal. A series of rotaxane intermediates based on terpyridine-stilbene derivatives were designed and prepared, and their photophysical and photochemical properties were thoroughly investigated. Moreover, some photochemically or electrochemically active functional groups, such as spiropyran and ferrocene moieties, were introduced into the terpyridine-stilbene scaffolds, and their photophysical and photochemical properties as well as the fluorescent responses to external photochemical, electrochemical stimuli or ions were thoroughly studied. The potential applications in adjustable polymer and fluorescent switches were also discussed. In this thesis, we also introduced a photochromic dithienylcyclopentene unit into terpyridine derivative, to gain dual-mode responsive fluorescent switches with high-contrast modulation.更多还原