Metal-containing conjugated materials and chemical sensors

含金属共轭材料和化学传感器

• 批准号: 183740-2006
• 负责人: Wolf, Michael
• 金额: $ 4.81万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2008
• 资助国家: 加拿大
• 起止时间: 2008-01-01 至 2009-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=392189
• 关键词: Metal; containing; conjugated; materials; chemical

Materials in which chemical, optical and electronic signals are generated or interconverted are essential for new information, sensor and energy harvesting technologies.  Molecule-based materials allow a wide range of function to be built-in using chemical synthesis.  The application of these materials involves incorporating a desired property or function at the molecular level, and then organizing the material such that the chemical, optical or electronic signal may be used.  In this proposal, three major objectives are targeted: (a) New methods of efficiently harvesting solar energy using plastics containing small amounts of metals are proposed.  These metallo-polymers may provide alternatives to the currently used inorganic materials, and may be more easily processed; for example, it may be possible to print solar cells using metallo-polymers on flexible plastic substrates.  Cross-linking these polymers inside a bubble in solution gives small particles which emit longer wavelength light when irradiated.  The metal groups may be chosen to stop light emission above a specific temperature, allowing these particles to serve as tiny thermometers.   (b) New molecule-based chemical sensors allowing the detection of several chemical pollutants and toxins including carbon monoxide and sulfur monoxide are proposed.  These sensors are based on light emitted from part of the molecule:  the color and intensity of the emitted light is affected by the presence of the gas.  These may lead to cheap, small and efficient methods of detecting these substances in the environment.  (c) Nanomaterials, in which metal and semiconductor particles less than 1/1000 the diameter of a human hair in size are embedded in colored or conductive polymers will be prepared.  These small particles behave differently from the corresponding bulk materials, allowing possible application of these hybrid materials as catalysts, and in sensors and solar energy harvesting.

化学、光学和电子信号在其中产生或相互转换的材料对于新的信息、传感器和能量收集技术是必不可少的。基于分子的材料允许使用化学合成来内置广泛的功能。这些材料的应用包括在分子水平上结合所需的性质或功能，然后组织材料，使得化学、光学和电子信号在分子水平上相互转换。该建议主要有三个目标：（a）提出使用含有少量金属的塑料有效收集太阳能的新方法，这些金属聚合物可替代目前使用的无机材料，并且可能更容易加工;例如，可以在柔性塑料基底上使用金属聚合物印刷太阳能电池。在溶液中的气泡内交联这些聚合物得到小颗粒，当照射时，这些小颗粒发射更长波长的光。可以选择金属基团以在特定温度以上停止光发射，使这些粒子可以充当微小的温度计。 （B）提出了新的基于分子的化学传感器，可以检测几种化学污染物和毒素，包括一氧化碳和一氧化硫，这些传感器基于分子的一部分发出的光：所发射的光的颜色和强度受气体的存在的影响。这些可能导致廉价的，（c）纳米材料，其中金属和半导体颗粒小于1/将1000根头发直径大小的颗粒嵌入有色或导电聚合物中。这些小颗粒的行为与相应的块状材料不同，允许这些杂化材料作为催化剂以及在传感器和太阳能收集中的可能应用。