Electrooptic Materials Based on Molecular Compasses and Gyroscopes: Effects of Symmetry, Conjugation, and Correlated Dipolar Rotation

基于分子罗盘和陀螺仪的电光材料：对称性、共轭性和相关偶极旋转的影响

• 批准号: 0605688
• 负责人: Miguel Garcia-Garibay
• 金额: $ 44万
• 依托单位: University of California-Los Angeles
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-07-01 至 2011-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0605688&HistoricalAwards=false
• 关键词: Electrooptic; Materials; Based; Molecular; Compasses

Technical AbstractThe main purpose of this project is to continue the development and testing of a new class of functional solid state materials based on structures that have a static, lattice-forming supramolecular or metalo-organic coordination frames, linked to dipolar molecular components capable of changing their orientation in response to external fields. The desired molecular components are structurally analogous to macroscopic compasses and gyroscopes, and their crystalline aggregates are expected to form dipolar rotary arrays with many interesting properties. It is predicted that changes in molecular and crystallographic symmetry will lead to materials with spontaneous dipolar order, either ferroelectric or antiferroelectric, with a number of states (orientations) that will depend on the rotational symmetry order. Recent advances in communication technologies have stimulated much interest in the field of photonics, including materials with tunable transmittance, refraction, polarization, and color. The students involved in aspects of this project include three women and two Hispanics. A post-doctoral NSF discovery corps fellow who participates in this project leads the research group in outreach activities, which involves interactions with teachers at Abraham Lincoln High School of the Los Angeles Unified School District, with a student body that is 85% Hispanic and 15% Asian.Non-Techical:Advances in communication technology continue to have a very strong impact in all aspects of our daily lives, including improvements in entertainment, education, and national security. In this context, one of the most promising areas for future development is the field of photonics, where light takes the place of electricity to help us read-write, store, process, and transmit information. While light has many interesting properties (color, polarization, brightness, does not produce heat, etc.), it is still quite difficult to handle and manipulate. The main purpose of this project is to develop and test a new class of functional solid state materials designed to help control the passage of light by using structures with molecules that change their state of motion and orientation in response to electric fields. The desired molecules are structurally analogous to macroscopic compasses and gyroscopes, and are able to orient themselves towards the strongest fields or to change their state of motion when an external force is applied. The students involved in various aspects of this project are trained in cutting-edge research techniques while developing some of the newest technologies. A post-doctoral NSF discovery corps fellow who participates in this project leads our research group in outreach activities, which currently involves interactions with teachers at Abraham Lincoln High School of the Los Angeles Unified School District, with a student body that is 85% Hispanic and 15% Asian.

技术摘要本项目的主要目的是继续开发和测试一类新的功能性固态材料，该材料基于具有静态的、形成晶格的超分子或金属有机配位框架的结构，该配位框架与能够响应于外部场而改变其取向的偶极分子组分相连接。 所需的分子组分在结构上类似于宏观罗盘和陀螺仪，预计它们的结晶聚集体将形成具有许多有趣性质的偶极旋转阵列。据预测，分子和晶体对称性的变化将导致材料的自发偶极顺序，铁电或反铁电，与一些国家（方向），这将取决于旋转对称顺序。 通信技术的最新进展激发了人们对光子学领域的极大兴趣，包括具有可调谐透射率、折射率、偏振和颜色的材料。 参与该项目的学生包括三名妇女和两名西班牙裔学生。参与该项目的一位博士后NSF探索队研究员领导研究小组开展外联活动，其中包括与洛杉矶联合学区亚伯拉罕林肯高中的教师互动，该高中的学生群体中85%是西班牙裔，15%是亚裔。非技术性：通信技术的进步继续对我们日常生活的各个方面产生非常强烈的影响，包括娱乐，教育和国家安全的改善。 在这种背景下，未来发展最有前途的领域之一是光子学领域，光取代电来帮助我们读写、存储、处理和传输信息。 虽然光有许多有趣的特性（颜色，偏振，亮度，不产生热量等），但是它仍然很难处理和操纵。 该项目的主要目的是开发和测试一类新的功能性固态材料，旨在通过使用分子结构来帮助控制光的通过，这些结构可以改变其运动状态和方向以响应电场。所需的分子在结构上类似于宏观罗盘和陀螺仪，并且能够使自己朝向最强的场，或者在施加外力时改变它们的运动状态。 参与该项目各个方面的学生在开发一些最新技术的同时接受尖端研究技术的培训。一位参与该项目的博士后NSF发现军团研究员领导我们的研究小组开展外展活动，目前涉及与洛杉矶联合学区亚伯拉罕林肯高中教师的互动，学生中85%是西班牙裔，15%是亚裔。