Tailoring the Colorimetric and Luminescence Response of Supported Platinum(II) Salts for Aqueous Ion Sensing

辛辛那提大学化学系的William B. Connick教授在化学结构、动态和机制B项目资助的这个项目中，正在制备一类含有过渡金属配合物盐的新材料，这种盐在暴露于水中的某些离子时，会发生明显的颜色变化（和磷光变化）。这些材料对开发新一代传感器监测流动的天然水、地下羽流、工业废水和饮用水中的有毒污染物很有兴趣。该项目位于分子无机化学和材料科学的交汇处，因此非常适合培养年轻科学家，他们将为解决21世纪的科学挑战做出贡献。该项目还为来自传统上代表性不足群体的学生提供科学教育和培训。拓展活动吸引当地八年级学生动手，探究式的实验室学习。线性链盐由堆叠的方形平面铂（II）离子组成，是开发高特异性离子检测系统的有吸引力的候选者。该项目的重点是确定控制负载铂（II）盐对水溶液阴离子和阳离子的比色和发光响应的因素。目标是确定如何使用合成参数来定制这些材料的性能。此外，本研究还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了基本的见解。该研究有助于描述金属盐溶解度和水蒸发在离子输运动力学和热力学中的作用以及由此产生的光谱。该研究是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表征和离子交换的研究。最终，这些研究有望为开发设计水性阴离子传感装置的合理策略提供所需的基本理解。

In this project funded by the Chemical Structure, Dynamic & Mechanism B Program of the Chemistry Division, Professor William B. Connick of the Department of Chemistry at the University of Cincinnati is preparing a new class of materials containing salts of transition metal complexes that undergo a distinct color change (and change in phosphorescence) upon exposure to certain ions in water. These materials are of interest for the development of a new generation of sensors to monitor toxic pollutants in flowing natural water, underground plumes, industrial effluent, and drinking water. The project lies at the interface of molecular inorganic chemistry and materials science, and is therefore well suited to the education and preparation of young scientists who will contribute to solving scientific challenges in the 21st century. The project also provides scientific education and training for students from traditionally underrepresented groups. Outreach activities engage local 8th grade students in hands-on, inquiry-based laboratory learning.Linear-chain salts composed of stacked square planar platinum (II) ions are attractive candidates for the development of highly specific ion detection systems. This project focuses on determining the factors that govern the colorimetric and luminescence-based responses of supported platinum (II) salts to aqueous anions and cations. The objective is to establish how synthetic parameters can be used to tailor the properties of these materials. In addition, this research provides fundamental insight into the influence of micro- and nanoenvironments on structure and electronic properties of the incorporated platinum salts. The research helps to delineate the role of the metal salt solubility and water evaporation in the kinetics and thermodynamics of ion transport and the resulting spectroscopy. The research is accomplished by exploring a series of synthetic strategies and employing a battery of physical methods for materials characterization and investigations of ion exchange. Ultimately, these studies are expected to provide the fundamental understanding needed to develop rational strategies for designing aqueous anion sensing devices.