IRFP: Boron-Containing Organic Donor-Acceptor Scaffolds: Chemoresponsive Optoelectronic Materials

IRFP：含硼有机供体-受体支架：化学响应光电材料

• 批准号: 1064434
• 负责人: Aaron Finke
• 金额: $ 14.49万
• 依托单位: Finke Aaron D
• 依托单位国家: 美国
• 项目类别: Fellowship Award
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-07-01 至 2013-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1064434&HistoricalAwards=false
• 关键词: IRFP; Boron; Containing; Organic; Donor

The International Research Fellowship Program enables U.S. scientists and engineers to conduct nine to twenty-four months of research abroad. The program's awards provide opportunities for joint research, and the use of unique or complementary facilities, expertise and experimental conditions abroad. This award will support a twenty-four-month research fellowship by Dr. Aaron D. Finke to work with Dr. Francois Diederich at the ETH-Zurich in Zurich, Switzerland.The proposed research concerns the effects of boron incorporation in a novel class of organic chromophores. [2+2] cycloaddition/cycloreversion chemistry with electron-rich alkynes and electron-poor olefins is an ideal method for preparation of chromophores of small size because of its synthetic facility, atom economy, and generation of complexity. These chromophores, which contain an electron-rich aniline and electron-poor tetracyanobutadiene, are typically highly-colored due to strong charge-transfer behavior, and exhibit reduction potentials on par with the best organic electron-acceptors currently known. They also possess high nonlinear optical activity which has been exploited in devices such as optical waveguides. Studies on the incorporation and effects of different functional groups to modulate the optoelectronic properties of these chromophores have been limited. The addition of electron-accepting boron moieties into conjugated organic systems should allow for stronger electron-accepting properties as well as introduce a new ability to more finely "tune" the electron-accepting behavior, and thus the optical and electrochemical properties, of these materials. Once a greater understanding of organoboron-containing "super-acceptors" is gained, the proposed research will seek to exploit the chemoresponsive nature of organoboron-containing functional groups for novel chemical sensing applications. This work will enhance our understanding of the effects of electron-accepting groups in strong organic acceptor materials. Main-group element incorporation into conjugated organic materials will futher diversify the types of organic electronic materials that are currently available. Boron's high availability, low cost, and low toxicity make it attractive for the development of "greener" materials for devices that currently rely on expensive and/or toxic metals. Furthermore, the incorporation of chemically-responsive moieties such as organoboranes into conjugated systems should allow for new approaches toward systems for the detection of environmental contaminants such as fluoride for public health applications.

国际研究奖学金项目使美国科学家和工程师能够在国外进行9至24个月的研究。该计划的奖励为联合研究提供了机会，并利用独特或互补的设施、专业知识和国外的实验条件。该奖项将支持Aaron D. Finke博士与Francois Diederich博士在瑞士苏黎世联邦理工学院开展为期24个月的研究。提出的研究涉及硼掺入在一类新的有机发色团的影响。用富电子炔和贫电子烯烃进行[2+2]环加成/环还原化学是制备小尺寸发色团的理想方法，具有合成方便、原子经济、生成复杂等优点。这些发色团含有富电子的苯胺和缺电子的四氰丁二烯，由于强的电荷转移行为，它们通常是高度着色的，并且表现出与目前已知的最好的有机电子受体相当的还原电位。它们还具有很高的非线性光学活性，这在光波导等器件中得到了应用。关于不同官能团对这些发色团光电性质的调节及其影响的研究是有限的。在共轭有机体系中加入接受电子的硼基团，可以获得更强的接受电子的性能，并引入一种新的能力，可以更精细地“调整”这些材料的接受电子的行为，从而提高其光学和电化学性能。一旦对含有机硼的“超级受体”有了更深入的了解，该研究将寻求利用含有机硼官能团的化学反应性质，用于新的化学传感应用。这项工作将增强我们对电子接受基团在强有机受体材料中的作用的理解。主族元素加入共轭有机材料将进一步丰富现有有机电子材料的种类。硼的高可用性、低成本和低毒性使其对目前依赖昂贵和/或有毒金属的设备的“绿色”材料的开发具有吸引力。此外，将有机硼烷等具有化学反应的部分纳入共轭系统，应该可以为检测环境污染物（如用于公共卫生应用的氟化物）的系统提供新的方法。