Elucidation of the Factors Governing the Colorimetric and Luminescence-Based Responses of Supported Platinum(II) Salts to Aqueous Anions: Foundation for Effective Anion Sensors

阐明控制负载型铂 (II) 盐对水阴离子的比色和发光响应的因素：有效阴离子传感器的基础

• 批准号: 1152853
• 负责人: William Connick
• 金额: $ 40.5万
• 依托单位: University of Cincinnati Main Campus
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-09-01 至 2016-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1152853&HistoricalAwards=false
• 关键词: Elucidation; Factors; Governing; Colorimetric; Luminescence

This award in the Chemical Structure, Dynamics and Mechanisms supports work by Professor William Connick at the University of Cincinnati to prepare new materials containing platinum(II) salts and to determine the factors that govern the colorimetric and luminescence-based responses of these materials to aqueous anions. These studies are expected to lead to new materials and methods for their preparation. In addition, this research will provide fundamental insight into the influence of micro- and nanoenvironments on structure and electronic properties of the incorporated platinum salts. Ultimately, these studies are expected to provide the knowledge needed to develop rational strategies for designing aqueous anion sensing devices. The research will be accomplished by exploring a series of synthetic strategies and employing a battery of physical methods for materials characterization and investigations of ion exchange. The research activities will bring together a research team composed of high school students, undergraduate students, graduate students, and Professor Connick. In collaboration with a Cincinnati Public Schools teacher, hands-on demonstrations of these ion-exchange materials will be developed in order to help teach fundamental chemical concepts to high students.Despite the importance of monitoring anion levels in the environment and the human body, the rapid, on-site and low-cost detection of certain ions (e.g., oxyanions) remains a significant challenge. For example, perchlorate anion poses a health hazard because it persists for long times in the environment and interferes with thyroid function. However, sensitive methods of perchlorate detection are expensive and cumbersome for field work. The research conducted under this award will lay the foundation for a new strategy for ion sensing. The resulting anion-sensitive materials will exhibit characteristic phosphorescence when exposed to certain aqueous anions, such as perchlorate. In principle, this anion-induced response can be exploited for the rapid, low-cost detection of specific aqueous anions in flowing natural water, underground plumes, industrial effluent, and municipal water. Activities under this award will focus on developing methods for preparing materials with these properties and determining how they work. The resulting insights are an essential first step toward the development of rational approaches for incorporation of these materials in ion sensing devices. Thus, the research is expected to enable new technologies that promote sustainability. The knowledge gathered from these studies also is expected to be relevant in fields such as ion sequestration, vapor-sensing, chemical catalysis, and non-linear optics.

该化学结构、动力学和机制奖支持辛辛那提大学William Connick教授制备含铂（II）盐的新材料，并确定控制这些材料对水性阴离子的比色和基于发光的响应的因素。这些研究有望导致新材料和新方法的制备。此外，本研究将为微观和纳米环境对掺入铂盐的结构和电子性能的影响提供基本的见解。最终，这些研究有望为设计水性阴离子传感装置提供合理策略所需的知识。该研究将通过探索一系列的合成策略和采用一系列的物理方法来完成材料的表征和离子交换的研究。此次研究活动将由高中生、本科生、研究生和康尼克教授组成研究小组。与辛辛那提公立学校的一位老师合作，将开发这些离子交换材料的实际演示，以帮助向高中生教授基本的化学概念。尽管监测环境和人体中的阴离子水平很重要，但快速、现场和低成本地检测某些离子（如氧阴离子）仍然是一个重大挑战。例如，高氯酸阴离子会对健康造成危害，因为它会在环境中持续很长时间并干扰甲状腺功能。然而，灵敏的高氯酸盐检测方法在野外工作中既昂贵又繁琐。根据该奖项进行的研究将为离子传感的新策略奠定基础。当暴露于某些含水阴离子（如高氯酸盐）时，所产生的阴离子敏感材料将表现出特有的磷光。原则上，这种阴离子诱导的反应可以用于快速、低成本地检测流动的自然水、地下羽流、工业废水和市政用水中的特定含水阴离子。该奖项下的活动将侧重于开发具有这些特性的材料的制备方法，并确定它们的工作原理。由此产生的见解是朝着将这些材料纳入离子传感器件的合理方法发展的重要的第一步。因此，这项研究有望使促进可持续性的新技术成为可能。从这些研究中收集到的知识也有望应用于离子隔离、蒸汽传感、化学催化和非线性光学等领域。