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.

堪萨斯州立大学的丹尼尔Higgins教授得到了分析和表面化学项目以及固态化学项目的支持，开发了两亲性、离子性、表面活性的二酰亚胺，与常见的聚电解质沿着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）的分辨率的典型的50-100 nm的聚集体。 多光子激发荧光各向异性测量（MPEFM）用于研究生色团组织。 这两个实验的动态版本提供了关于电荷载流子产生和迁移速率的信息。 使用小角X射线散射和原子力显微镜的薄膜形态和其他数据的散装材料进行了研究。 该薄膜最终可能用于有机光电导体和光致发光器件。 这类材料的进一步发展有望使显示器和能源技术，例如太阳能电池，具有柔性，可塑性和自我修复性。