High Resolution Optical Microscopy Studies of Aggregation and Dynamics in Photoactive Self-Assembled Polyelectrolyte-Surfactant Composites

光敏自组装聚电解质-表面活性剂复合材料中聚集和动力学的高分辨率光学显微镜研究

• 批准号: 0404578
• 负责人: Daniel Higgins
• 金额: $ 35.7万
• 依托单位: Kansas State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-08-01 至 2008-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0404578&HistoricalAwards=false
• 关键词: Resolution; Optical; Microscopy; Studies; Aggregation

Professor Daniel Higgins of Kansas State University is supported by the Analytical and Surface Chemistry Program and the Solid State Chemistry Program to develop amphiphilic, ionic, surface-active di-imides to be used along with common polyelectrolytes in the preparation of composite photoactive thin films. The experiments involve near-field scanning optical microscopy (NSOM) for resolution of the typically 50-100 nm aggregates. Multiphoton-excited fluorescence anisotropy measurements (MPEFM) are used to study chromophore organization. Dynamical versions of these two experiments provide information about the rates of charge carrier generation and migration. Film morphology and other data about the bulk materials are studied using small-angle X-ray scattering and atomic force microscopy. The films may ultimately be useful in organic photoconductors and photovoltaics. Further development of this class of materials promises to make available display and energy technologies, for example solar cells, that are flexible, moldable and self-healing.

堪萨斯州立大学的 Daniel Higgins 教授在分析和表面化学项目以及固态化学项目的支持下，开发了两亲性离子表面活性二酰亚胺，与常见的聚电解质一起用于制备复合光活性薄膜。 实验涉及近场扫描光学显微镜 (NSOM)，用于分辨率通常为 50-100 nm 的聚集体。 多光子激发荧光各向异性测量 (MPEFM) 用于研究发色团组织。 这两个实验的动态版本提供了有关电荷载流子生成和迁移速率的信息。 使用小角 X 射线散射和原子力显微镜研究了薄膜形态和有关块体材料的其他数据。 这些薄膜最终可能可用于有机光电导体和光伏发电。 此类材料的进一步开发有望使显示和能源技术变得可用，例如太阳能电池，它们具有柔性、可模压和自修复功能。