【摘要】：柱芳烴是一類新型的超分子主體大環(huán)。由于其具有穩(wěn)定的偏柔性結(jié)構(gòu),端基易修飾,主客體識別選擇性質(zhì)好,應(yīng)用范圍廣等特點受到廣泛的關(guān)注,且發(fā)展迅猛。柱芳烴對于不同的陰陽離子,小分子,大分子具有明顯的選擇差異,因此常用來通過主客體識別競爭來控制熒光的增強和減弱。作為一種性能優(yōu)異的光致變色材料,萘酚吡喃具有良好的的抗疲勞性,快速的光響應(yīng)性和較大的色域范圍。而熒光基團向開環(huán)體萘酚吡喃進行的能量轉(zhuǎn)移,是導(dǎo)致熒光淬滅的原因,因此常應(yīng)用于光致變色熒光開關(guān)的研究中。本論文的主要目的是探究一種涵蓋超分子主客體識別競爭作用和萘酚吡喃光致變色作用的聚合物超分子體系。通過主客體識別作用和光致變色作用實現(xiàn)對熒光的多重控制,構(gòu)建多重響應(yīng)的熒光開關(guān)。其中主要研究內(nèi)容包括:1.合成了側(cè)鏈含有柱[5]芳烴和萘酚吡喃基團的超分子聚合物主體,以及含有分子芘熒光基團的客體。2.通過核磁氫譜、碳譜,質(zhì)譜,紅外光譜及凝膠滲透色譜(GPC)對主客體的結(jié)構(gòu)進行了表征。3.利用核磁氫譜對柱[5]芳烴和熒光客體的主客體識別性質(zhì)進行了探究。在有機相中,柱[5]芳烴可以與熒光客體發(fā)生主客體識別。4.通過紫外吸收光譜和熒光光譜研究了超分子體系在溶液和膜中熒光開關(guān)性質(zhì)。在一定波長的紫外光照射下,紫外光譜和熒光光譜的變化以及溶液的顏色變化說明可以通過光致變色基團的開關(guān)環(huán)實現(xiàn)對熒光的開與關(guān)的控制。而隨著競爭客體分子的加入,超分子體系熒光的淬滅表明了主客體識別競爭可以實現(xiàn)對于熒光的控制。
[Abstract]:Column aromatics are a new type of supramolecular macroring. Due to its stable flexible structure, easy modification of the end group, good choice of the subject and object, and wide range of application, it has received extensive attention and developed rapidly. Column aromatics have different choices for different anions, small molecules and macromolecules, so they are often used to control the enhancement and weakening of fluorescence through host and guest recognition competition. As an excellent photochromic material, naphthol pyran has good fatigue resistance, fast photoresponse and a wide range of color gamut. The energy transfer from fluorescence group to naphthol pyran is the cause of fluorescence quenching, so it is often used in the study of photochromic fluorescence switch. The main purpose of this thesis is to explore a polymer supramolecular system which includes supramolecular host and guest recognition competition and naphthol pyran photochromism. The multiplex control of fluorescence is realized by the action of host and guest recognition and photochromism, and the multi-response fluorescence switch is constructed. The main research contents include: 1. The supramolecular polymers with column [5] aromatics and naphthol pyranyl groups in the side chain and the guest of pyrene fluorescence group in the side chain were synthesized. The structure of host and guest was characterized by nuclear magnetic hydrogen spectrum, carbon spectrum, mass spectrometry, infrared spectrum and gel permeation chromatography (GPC). The host and guest recognition properties of [5] aromatics and fluorescent guest were investigated by nuclear magnetic hydrogen spectroscopy. In organic phase, column [5] aromatics can be recognized by host and guest with fluorescent guest. The fluorescence switch properties of supramolecular system in solution and film were studied by UV absorption and fluorescence spectra. The changes of UV and fluorescence spectra and the color of the solution under certain wavelength of UV irradiation indicate that the control of fluorescence can be realized by the switch ring of photochromic group. With the addition of competitive guest molecules, the fluorescence quenching of supramolecular system shows that the host and guest recognition competition can control the fluorescence.
【學(xué)位授予單位】：東北師范大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：O641.3

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本文編號：2180605