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

在这个由化学系化学结构、动态和机理B计划资助的项目中，辛辛那提大学化学系的William B.Connick教授正在准备一种新的材料，其中包含过渡金属络合物的盐类，当暴露于水中的某些离子时，这些络合物会经历明显的颜色变化(和磷光变化)。这些材料对开发新一代传感器很有意义，可以监测流动的天然水、地下羽流、工业废水和饮用水中的有毒污染物。该项目位于分子无机化学和材料科学的交界处，因此非常适合年轻科学家的教育和准备，他们将为解决21世纪的科学挑战做出贡献。该项目还为传统上代表性不足的群体的学生提供科学教育和培训。外展活动吸引了当地8年级学生进行动手、基于探究的实验室学习。由正方形平面铂(II)离子堆叠而成的直链盐是开发高度特定的离子检测系统的有吸引力的候选者。本项目的重点是确定控制负载型铂(II)盐对水中阴离子和阳离子的比色和发光响应的因素。其目的是确定如何使用合成参数来调整这些材料的性能。此外，这项研究还为微环境和纳米环境对所结合的铂盐的结构和电子性质的影响提供了基本的见解。这项研究有助于描述金属盐的溶解度和水的蒸发在离子传输的动力学和热力学以及由此产生的光谱中的作用。这项研究是通过探索一系列合成策略并使用一系列物理方法来表征材料和研究离子交换来完成的。最终，这些研究有望提供所需的基本理解，以开发设计水基阴离子传感装置的合理策略。

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.