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

• 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

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.

非技术摘要有机电子材料具有多种应用，将成为美国创新经济中日益增长的元素。 充分发挥这些材料的潜力需要新的研究，例如本提案中将进行的开发新型功能材料和组织原理的研究。 在国家科学基金会的资助下，将开发液晶科学和有机电子材料界面的新方法。 这项工作产生的技术有可能在化学传感器和高性能有机电子产品的形成中找到商业应用。该提案还将支持研究生和本科生的教育，遵循一种教育模式，为学生提供广泛、自力更生的技术背景以及领导力、管理和创业教育。首席研究员坚定致力于增加科学和工程领域的多样性，并继续组织未来教师研讨会，为代表性不足的群体竞争学术生涯做好准备。 该研讨会已举办七届，取得了巨大成功。 首席研究员还深入参与了麻省理工学院的多元化工作，并领导了奖学金的创建工作，组织了年度研讨会，以激励/促进代表性不足的群体进入研究生院，并接待代表性不足的本科生进行暑期研究体验。技术摘要在材料研究部的固态和材料化学项目，该研究旨在探索应用于电活性材料的液晶科学概念。提出了新的分子支架和相互作用来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。 新设计包括利用 C-H...pi 相互作用来创建苯和甲烷的受体。 基于噻蒽的电活性形状改变分子被认为是有机半导体和传感应用的前景。 将探索它们与小分子、金属离子和碳纳米管的相互作用。 噻蒽的动态行为也被认为是降低刚性板状分子熔点的机制。 这种方法旨在创造具有液晶有序性和熔融加工性能的新一代有机半导体。 将生产有毒金属和植物激素乙烯的传感装置。 新一代化学电阻传感器将利用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分子层的化学动力学和扫描隧道显微镜（STM）成像形成的结构进行组合分析。

项目成果

Chemiresistive Graphene Sensors for Ammonia Detection

用于氨检测的化学电阻石墨烯传感器

• DOI: 10.1021/acsami.8b00853
• 发表时间: 2018-04
• 期刊: ACS Applied Materials & Interfaces
• 影响因子: 9.5
• 作者: Mackin, Charles;Schroeder, Vera;Zurutuza, Amaia;Su, Cong;Kong, Jing;Swager, Timothy M.;Palacios, Tomás
• 通讯作者: Palacios, Tomás

Optically active distorted cyclic triptycenes: chiral stationary phases for HPLC

光学活性扭曲环状三蝶烯：HPLC 手性固定相

• DOI: 10.1039/c8ra04434a
• 发表时间: 2018-06-05
• 期刊: RSC Advances
• 影响因子: 3.9
• 作者: T. Ikai;N. Nagata;Seiya Awata;Yuya Wada;Katsuhiro Maeda;M. Mizuno;T. Swager
• 通讯作者: T. Swager

Polymers with Side Chain Porosity for Ultrapermeable and Plasticization Resistant Materials for Gas Separations

用于气体分离的超渗透和抗塑化材料的具有侧链孔隙的聚合物

• DOI: 10.1002/adma.201807871
• 发表时间: 2019-04-09
• 期刊: Advanced Materials
• 影响因子: 29.4
• 作者: Yuan He;F. Benedetti;Sharon Lin;Chao Liu;Yanchuan Zhao;H. Ye;T. Van Voorhis;M. Grazia De Angelis
• 通讯作者: M. Grazia De Angelis

Carbon Nanotube Chemical Sensors

碳纳米管化学传感器

• DOI: 10.1021/acs.chemrev.8b00340
• 发表时间: 2019-01-09
• 期刊: Chemical Reviews
• 影响因子: 62.1
• 作者: Schroeder V;Savagatrup S;He M;Lin S;Swager TM
• 通讯作者: Swager TM