以金纳米溶胶作为电泳显示材料的探索

发布时间：2018-09-12 07:52

【摘要】：金纳米粒子具有独特的表面等离子体共振吸收，吸收强度和位置对周围的介质环境非常的敏感，已经被广泛的应用到了传感检测等领域，，但是利用金纳米粒子共振吸收随周围介质环境的变化，将其应用到显示方面的研究却鲜有报道。本论文将探索以金纳米粒子作为显示材料的可能性。首先，探讨了以金纳米粒子作为固定显色剂，将其高密度附载在透明背底上，提高背底衬度的方法。另一方面，探索了将金纳米粒子作为可移动的显色剂应用于电泳显示的可行性。关于固定显色背底，我们采用了低成本且可大面积构筑的自组装方法，即用氨基硅烷修饰法对背底进行修饰，通过背底上氨基硅烷和金纳米粒子之间正负电荷或氢键的相互作用，实现金纳米粒子在背底上的自组装。通过调节金纳米粒子溶胶的pH，实现了金纳米粒子和背底之间相互作用力强弱的调控。也通过调节沉积时间和金纳米粒子溶胶的离子强度，实现金纳米粒子在背底上密度的调控。通过不同温度的热处理，实现了背底色纯度和衬度的提高。此工作验证了通过金纳米粒子在透明背底上高密度的自组装，再热处理的方法，可以方便地制备具有肉眼清晰可见颜色的显色背底。关于金纳米粒子可移动显色剂，金纳米粒子的稳定性和分散性非常重要。采用了以聚合物为配体的方法，合成了稳定性好、高表面电荷密度的聚二甲基二烯丙基氯化铵稳定的金纳米粒子，并且对影响合成纳米粒子的因素进行了详细的研究。也合成了以有机小分子为配体的金纳米粒子，考察了不同配体包覆的纳米粒子在不同高沸点溶剂中的稳定性，找到了化学性质稳定，且可以与金纳米粒子具有相互配位作用的N-甲基吡咯烷酮作为纳米粒子的分散介质，实现了纳米粒子的稳定分散。为利用电泳驱动金纳米粒子移动提供了材料基础。上面两部分的工作对金纳米粒子作为电泳显示的前期基础实验进行了论证，证实了以金纳米粒子作为显色剂的可行性，显示器件的构筑还需要后续的探究。
[Abstract]:Gold nanoparticles have unique surface plasmon resonance absorption, the absorption intensity and position are very sensitive to the surrounding media environment, and have been widely used in sensor detection and other fields. However, using the resonance absorption of gold nanoparticles with the change of the surrounding media environment, there are few reports on the application of gold nanoparticles to display. This paper will explore the possibility of using gold nanoparticles as display materials. Firstly, the method of using gold nanoparticles as stationary chromogenic agent to increase the backing contrast was discussed. On the other hand, the feasibility of using gold nanoparticles as a removable chromogenic agent in electrophoretic display was explored. For fixed color back, we adopt a low cost and large area self-assembly method, which is modified by aminosilane. The self-assembly of gold nanoparticles on the back is realized by the interaction of positive and negative charge or hydrogen bond between the above amino silane and gold nanoparticles. By adjusting the pH, of gold nanoparticles sol, the interaction between gold nanoparticles and the back floor was regulated. By adjusting the deposition time and the ionic strength of gold nanoparticles, the density of gold nanoparticles on the back is controlled. By heat treatment at different temperatures, the purity and contrast of back color were improved. This work has proved that the gold nanoparticles can be easily prepared by high density self-assembly and reheat treatment of gold nanoparticles on the transparent back substrate with visible color in the naked eye. The stability and dispersity of gold nanoparticles are very important for the mobile color reagents of gold nanoparticles. Gold nanoparticles with good stability and high surface charge density were synthesized by using polymer as ligand, and the factors affecting the synthesis of nanoparticles were studied in detail. Gold nanoparticles with small organic molecules as ligands were also synthesized. The stability of nanoparticles coated with different ligands in different solvents with high boiling point was investigated and the chemical properties were found to be stable. N- methylpyrrolidone, which can coordinate with gold nanoparticles, can be used as the dispersion medium of nanoparticles, and the stable dispersion of nanoparticles is achieved. It provides a material basis for gold nanoparticles to move by electrophoretic. The above two parts of the work of gold nanoparticles as electrophoretic display of the previous basic experiment demonstrated the feasibility of gold nanoparticles as a chromogenic agent the construction of display devices need to be further explored.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TB383.1;O614.123

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