Shape Persistent, Dynamic, and Liquid Crystalline Materials for Sensor and Electronic Devices

为传感器和电子设备塑造持久、动态和液晶材料

基本信息

批准号：
1410718
负责人：
Timothy Swager
金额：
$ 52.5万
依托单位：
Massachusetts Institute of Technology
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2014
资助国家：
美国
起止时间：
2014-07-01 至 2018-06-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1410718&HistoricalAwards=false
关键词：
Shape Persistent Dynamic Liquid Crystalline

项目摘要

Non-Technical AbstractOrganic electronic materials have many applications and will be an increasing element of the innovation economy of the United States. Realizing the full potential of these materials requires new research, such as will be undertaken in this proposal to develop novel functional materials and organizational principles. Under this NSF funding new methods at the interface of liquid crystal science and organic electronic materials will be developed. Technologies to come from this work have the potential to find commercial applications in the formation of chemical sensors and high performance organic electronics. This proposal will also support the education of graduate students and undergraduates following an educational model that provides students with a broad, self-reliant technical background as well as education in leadership, management, and entrepreneurship. The lead researcher has a deep commitment to increasing diversity in science and engineering and continues to organize the Future Faculty Workshop, which prepares underrepresented groups to compete for academic careers. This workshop is in its 7th year and is highly successful. The lead researcher is also deeply involved in MIT's diversity efforts and led efforts for the creation of fellowships, organizes an annual workshop to inspire/facilitate underrepresented groups to attend graduate school, and hosts underrepresented undergraduate students for summer research experiences.Technical AbstractWith support from the Solid State and Materials Chemistry Program in the Division of Materials Research, this research is directed at the exploration of concepts of liquid crystal science applied to electroactive materials. New molecular scaffolds and interactions are proposed to create interactions between receptor molecules and small molecules for the creation of chemical sensors. New designs include the use of C-H...pi interactions to create receptors for benzene and methane. Electroactive shape changing molecules based upon thianthrene are proposed as prospects for organic semiconductors as well as sensory applications. Their interactions with small molecules, metal ions, and carbon nanotubes will be explored. The dynamic behavior of thianthrenes is also proposed as a mechanism to reduce the melting point of rigid board-like molecules. This approach is directed at creating new generations of organic semiconductors that display liquid crystalline order and melt processability. Sensory devices will be produced for toxic metals and the plant hormone ethylene. New generations of chemiresisitve sensors will make use of the self-assembly of rigid molecules having long alkyl sidechains on graphene and carbon nanotube surfaces. A combined analysis of the chemical dynamics and structures formed by scanning tunneling microscope (STM) imaging of self-assembled monolayers on graphite is proposed.

非技术抽象电子材料具有许多应用，将成为美国创新经济的越来越多的要素。意识到这些材料的全部潜力需要新的研究，例如在此提案中进行开发新型功能材料和组织原理的建议。在此NSF资助下，将开发液晶科学和有机电子材料界面的新方法。来自这项工作的技术有可能在形成化学传感器和高性能有机电子产品时找到商业应用。该建议还将支持研究生和本科生的教育，遵循一种教育模式，该模型为学生提供了广泛的自力更生的技术背景以及领导力，管理和企业家精神的教育。首席研究人员对不断提高科学和工程多样性的多样性做出了深远的承诺，并继续组织未来的教师研讨会，该研讨会为人数不足的团体做好准备以争夺学术职业。该研讨会已进入第七年，非常成功。首席研究人员还深深地参与了MIT的多样性努力，并为创建奖学金而努力，组织了一个年度研讨会，以激发/促进代表性不足的群体上学院就读研究生院，主持人的本科生不足，用于夏季研究经验。应用于电活性材料。提出了新的分子支架和相互作用，以创建受体分子和小分子之间的相互作用，以创建化学传感器。新设计包括使用C-H ... PI相互作用来为苯和甲烷创建受体。提出了基于噻thianthrene的电活性变化分子，作为有机半导体和感觉应用的前景。将探索它们与小分子，金属离子和碳纳米管的相互作用。还提出了蒂安特林的动态行为，以减少刚性板状分子的熔点的一种机制。这种方法旨在创建新一代的有机半导体，以显示液晶顺序和熔体加工性。感官设备将用于有毒金属和植物激素乙烯。新一代的化学传感器将利用在石墨烯和碳纳米管表面上具有长烷基侧链的刚性分子的自组装。提出了对石墨上自组装单层的扫描隧道显微镜（STM）成像形成的化学动力学和结构的组合分析。