Materials World Network: Lyotropic Chromonic Liquid Crystals

材料世界网：溶致发色液晶

• 批准号: 0710544
• 负责人: Samuel Sprunt
• 金额: $ 33.6万
• 依托单位: Kent State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-09-01 至 2012-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0710544&HistoricalAwards=false
• 关键词: Materials; World; Network; Lyotropic; Chromonic

This Materials World Network project focuses on structure and properties of a broad and important, yet currently poorly understood class of liquid crystals - the so-called lyotropic chromonic liquid crystals (LCLCs). The award promotes collaborative research among an interdisciplinary group from Kent State University (Physics and Chemical Physics departments) and the Institute of Physics in Kiev, Ukraine. LCLCs are remarkable in that their building blocks are stacks of plank-like molecules, often derived from dyes, that self-assemble in aqueous solution and subsequently, as stacks or bundles of stacks, form orientationally ordered liquid crystalline phases. Because of their unique structure, LCLCs demonstrate extraordinary properties, which are useful for novel technological applications, including (1) optical polarizers and compensators that would not require the mechanical stretching during fabrication typical of conventional polymer films and so could be utilized on substrates of virtually any shape; (2) biological sensors in which the LCLC serves as the detecting as well as the amplifying medium; and (3) longer range applications such as light harvesting. The MWN project goal is to establish the basic physical properties and molecular structure - physical property relationship of LCLCs through measurements of their viscoelastic parameters, optical / spectral characteristics (including time and frequency resolved optical response), and phase behavior as a function of concentration, dopants, ionic content of the solution, and temperature. Research conducted under this MWN will advance basic knowledge of mechanisms of nanoscale aggregation and self-organization via non-covalent bonding and of the collective behavior ensuing from these mechanisms. The proposed research will leverage broad facilities and expertise available at Kent State's Liquid Crystal Institute, and will utilize national laboratory resources such as the National High Magnetic Field Lab. The rich physics and chemistry of LCLCs (and liquid crystals in general), and the wide range of characterization facilities and techniques to be used, will ensure a broad research experience for graduate students and strong foundation for careers in the burgeoning field of soft materials science and engineering. The MWN team will develop new LC-based laboratory exercises for general undergraduate labs designed to establish an intellectual connection between basic physics concepts and LC technology ubiquitous in everyday life. The expected societal benefits include the availability of new materials and technologies that would improve the quality of life in areas ranging from telecommunications and displays to biological sensors.This award is co-funded by the Division of Materials Research and the Office of International Science and Engineering

该材料世界网络项目的重点是广泛而重要但目前尚未理解的液晶类的结构和特性 - 所谓的溶式染色体液体晶体（LCLC）。该奖项促进了肯特州立大学（物理和化学物理学系）和乌克兰基辅物理研究所的跨学科小组的合作研究。 LCLC值得注意的是，它们的构建块是木板状分子的堆叠，通常源自染料，这些分子在水溶液中自组装，随后作为堆栈或堆叠的堆叠，形式为定向有序的液晶阶段。由于其独特的结构，LCLC表现出非凡的特性，这些特性对于新技术应用有用，包括（1）光学极化器和补偿器，这些光学层和补偿器在典型的常规聚合物膜的制造过程中不需要机械拉伸，因​​此可以在虚拟的底物上使用任何形状； （2）LCLC用作检测和扩增培养基的生物传感器； （3）较长的范围应用，例如光收集。 MWN项目的目标是通过测量其粘弹性参数，光学 /光谱特征（包括时间和频率分解的光学响应）以及相位行为作为浓度的函数，通过测量其粘弹性参数来建立基本的物理特性和分子结构 - LCLC的物理性质关系 - 掺杂剂，溶液的离子含量和温度。在此MWN下进行的研究将通过非共价键和从这些机制中实现的集体行为来提高纳米级聚集和自组织机制的基本知识。拟议的研究将利用肯特州立液晶研究所提供的广泛设施和专业知识，并将利用国家实验室资源，例如国家高磁场实验室。 LCLCS（以及一般液晶）的丰富物理和化学以及要使用的广泛特征设施和技术，将确保研究生的广泛研究经验，以及在迅速材料科学领域的职业生涯的强大基础和工程。 MWN团队将为一般的本科实验室开发新的基于LC的实验室练习，旨在在日常生活中建立基本物理概念与LC技术之间的智力联系。预期的社会利益包括新材料和技术的可用性，这些技术将改善从电信和展示到生物传感器的领域的生活质量。该奖项由材料研究部和国际科学与工程办公室共同资助。