多进制信息存储的侧链型偶氮聚合物设计合成及其纳米器件制备工艺研究

The world-renowned 3D IMAX movie Avatar consists of 700 kg of film prints indicates that the existing storage materials and technologies have lagged far behind the rapid development of the information society. The polymers containing conjugated groups in the side chains have some special advantages, such as the monomer's structure designability, variety of polymerization methods, controllable molecular weight,large-scalability, simple film-forming methods (such as spin-coating, dip coating and pringting). In this project, series of conjugated monomers which involve pull-push electron groups and different conformation structures will be designed and synthesized, some free radical polymerization such as RAFT and ATRP will be used to obtain narrow molecular weight distribution and good solubility pendant polymers. Different film-forming methods mentioned above will be used to achieve nano-scale film on varies electrods. The molecular conformation structures, the pendant functional groups, the length of soft chains between the pendant group and the main chain, the molecular weight and the polydispersity, etc, will be studied precisely to make clear how they affect on the film's quarlity and the device's performances. Combined the experimental data with the molecular simulation, the molecular design and synthesis theory for ternary data storage utilies will be concluded. We hope the concluded theories can offer one direction for design and syntheis of the quarternary materials, which would be act as a guide for ultra-high density data storage materials research in the future.The quarternary materilas could increase data storage density revolutionarily, for example, using the same 30 memory cells, the storage density of a ternary system is more than 100 million times greater than that of a binary system. Our target is to realize the 700 Kg film prints can be stored in one disk in the future.

2010年著名《阿凡达》电影胶片重达700公斤说明传统二进制存储技术已经远不能满足现代社会信息量爆炸式增长的需求。本项目就是研究超高密度信息存储的侧链型偶氮聚合物，设计合成系列含偶氮为桥键，两端接不同推拉电子基团、不同分子构型的功能单体，通过RAFT、ATRP等自由基聚合方法得到分子量可控、分子量分布窄、溶解性能好、易于成膜的聚合物；通过旋涂、蘸涂、印刷等方法在各种不同电极上制备纳米薄膜，形成"电极/纳米薄膜/电极"的纳米器件，研究分子结构和器件制备工艺对薄膜质量和器件存储性能的影响规律；并以此为指导通过优化分子结构设计和改善器件制备工艺调控器件存储性能，突破传统二进制存储限制，首次实现三进制、四进制乃至于更多进制存储功能的聚合物材料，使在相同面积内信息存储密度比二进制呈亿倍的增长，实现原本700公斤的阿凡达电影胶片变为一张碟片可以解决，在全世界新型存储技术领域起到原创性和引领性作用。

2010年著名《阿凡达》电影胶片重达700公斤说明传统二进制存储技术已经远不能满足现代社会信息量爆炸式增长的需求。本项目就是研究超高密度信息存储的材料及制备村粗器件，先后设计合成了二十多个系列七十多种的聚合物材料和材料，通过聚合物侧链的共轭环构象变化、柔性链长短的调控、材料中杂原子含量的变化、分子中推拉电子效应、吸电子基团强度及数量、分子构型、共轭长度等众多因素的调控，研究了分子结构对分子在薄膜中的排列、与电极基底的接触角度、薄膜的表面形貌等影响规律，进而对器件的多进制信息存储性能的影响和对器件长效稳定性能的影响。初步得出了分子结构中必须含有两个不同大小的吸电子基团，以及合适的柔性链长度、分子共轭长度、较高的平面性等对材料所制备的器件最终展示为三进制性能具有决定性的作用。并且在三进制信息存储材料结构特点摸索的基础上，首次实现四进制的信息存储材料设计和合成，使在相同面积内信息存储密度比二进制呈亿倍的增长，实现原本700公斤的阿凡达电影胶片变为一张碟片可以解决，在全世界新型存储技术领域起到原创性和引领性作用。