Synthesis and applications of conjugated polymers with controllable microporosity and electroactivity

微孔率和电活性可控共轭聚合物的合成及应用

• 批准号: 312643-2011
• 负责人: Zhao, Yuming
• 金额: $ 4.01万
• 依托单位: Memorial University of Newfoundland
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=571791
• 关键词: Synthesis; applications; conjugated; polymers; controllable

Carbon-based nanomaterials constitute the centerpiece of current "nano"-oriented sciences and technologies, the advancement and fruition of which will lead to immediate, visible, and continuing impacts in the ongoing technology developments. Construction of defined microstructures on the nanometer (one-billionth of a meter) scale in a precise and controlled manner is a sine qua non for the technological applications of nanomaterials, while "molecular tailoring" provides the most effective means to achieving this goal. The proposed research will investigate novel conjugated polymer/oligomer-based nanomaterials designed with "intelligences" to show defined structural and luminescence responses to external stimuli (electric or photonic). By means of multi-step organic synthesis, two types of nanostructured organic materials will be prepared and investigated. (i) Microporous network polymer membranes that possess nanometer-scale tiny "pores", the sizes of which can be expanded and contracted under the control of electric potential. Such microscopic behavior mimics that of the skin pores and can be used as a key component for building a novel type of "opto-electronic noses" for sensing various vaporous chemicals. (ii) Linear molecular wires (oligomers) that show multi-stage folding behavior regulated by electric or chemical inputs. These molecular wires are designed to exhibit the Rubik's Snake-like electromechanical properties, and we will explore the use of these materials in fabrication of switchable "nano-containers" to encapsulate and sort out molecular or macromolecular hosts, such as single-walled carbon nanotubes. Implementation of the proposed research program will not only enrich our fundamental understanding on advanced nanomaterials and train highly qualified young researchers, but find wide-ranging applications in cutting-edge technologies such as chemical sensors, molecular switches, artificial membranes and skins, and ultra-miniaturized optoelectronic devices.

基于碳的纳米材料构成了当前“纳米”的核心科学和技术的核心，其进步和成果将导致对正在进行的技术发展的立即，可见和持续的影响。在纳米材料的技术应用中，以精确和受控的方式构建纳米尺度上定义的微观结构（米三分之一）尺度是一种正弦物质，而“分子裁缝”为实现这一目标提供了最有效的手段。 拟议的研究将研究具有“智能”设计的新型共轭聚合物/基于低聚物的纳米材料，以显示对外部刺激（电或光子）的结构和发光响应。通过多步有机合成，将准备两种纳米结构的有机材料。 （i）具有纳米尺度微小的“孔”的微孔网络聚合物膜，其尺寸可以在电势控制下扩展和收缩。这种微观行为模仿皮肤毛孔的毛孔，可以用作建立一种新型的“光电鼻子”类型的关键组成部分，以感知各种蒸发化学物质。 （ii）线性分子电线（低聚物）显示由电或化学输入调节的多阶段折叠行为。这些分子电线的设计旨在展示Rubik的类似蛇形的机电特性，我们将探索这些材料在制造可切换的“纳米容器”中的使用，以封装和整理分子或大分子分子宿主，例如单壁碳纳米管。拟议的研究计划的实施不仅会丰富我们对先进纳米材料的基本理解和培训高素质的年轻研究人员，而且还可以在尖端技术中找到广泛的应用，例如化学传感器，分子开关，人造膜和皮肤，以及超级米型药物。