光体在金属有机框架中的结构和光学特性在框架建设和相关传感事件期间在金属有机框架内发生的双重变化
Won Cho1, Hee Jung Lee, Goeun Choi
1Department of Chemistry, Yonsei University , 134 Shinchon-dong, Seodaemun-gu, Seoul 120-749, Korea.
Journal of the American Chemical Society
|August 15, 2014
概括
一个新的协调聚合物粒子 (CPP-16) 作为Cu2+的选择性化学传感器. 它的基于的结构在金属有机框架 (MOF) 中经历了独特的光学变化,用于敏感的金属离子检测.
科学领域:
- 材料科学 材料科学 材料科学
- 化学传感器 化学传感器
- 纳米技术纳米技术
背景情况:
- 金属有机框架 (MOF) 为各种应用提供可调节的结构.
- 化学传感器对于检测复杂矩阵中的特定分析物至关重要.
- 基于Pyrene的光体表现出独特的光物理性质,对它们的环境敏感.
研究的目的:
- 基于金属有机框架的新型微型化学传感器粒子 (CPP-16) 的合成和特征.
- 研究CPP-16对Cu2+) 离子的感应机制.
- 探索在传感过程中MOF结构内的pyrene部分的构造和光学变化.
主要方法:
- 合成烯功能化的有机构建块.
- 使用金属有机框架 (MOF) 方法构建协调聚合物颗粒 (CPP-16).
- 粉末X射线衍射 (PXRD) 用于结构分析.
- 辐射光谱和光显微镜用于传感研究.
主要成果:
- CPP-16展示了一个3D立方MOF-5结构.
- 由于MOF的限制,CPP-16内的Pyrene部分经历了完全的单体到异构体的转化.
- CPP-16证明了对其他金属离子的Cu2+) 离子的选择性检测.
- 2+) 结合会诱导一种形状变化,导致灭的排他物状态.
结论:
- 开发的协调聚合物粒子 (CPP-16) 作为Cu2+的有效和选择性化学传感器.
- 在MOF结构内独特的封闭效应驱动了初始的二烯排放物形成.
- 与Cu2+) 的特定相互作用导致了明显的光学反应,使敏感的检测成为可能.
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