RUI: Deep Eutectic Solvents for Chiroptical Materials

本课题由化学系化学结构、动力学机制B项目资助，托德A.巴特勒大学化学和生物化学系的霍普金斯正在开发一种称为深共熔溶剂的独特溶剂，作为圆偏振光发射材料。低共熔溶剂非常适合于该任务，因为能够控制其性质。本项目探讨如何设计深共熔溶剂，以提高发射圆偏振光的效率。圆偏振光发射材料，例如圆偏振有机发光二极管，在量子计算中具有潜在的应用，用于生成全息图像，以及作为安全标签。该项目使本科生参与物理，无机和材料化学界面的研究，并涉及本科研究生和物理化学实验室课程的学生之间的合作。从技术上讲，该项目的目标是开发基于溶解在深共熔溶剂中的发光镧系元素配合物的圆偏振光发射材料。深共熔溶剂由氢键受体和供体的组合形成，其性质可以通过选择组分来控制。因此，氢键受体与手性氢键供体的选择可以产生深共熔溶剂，其提供手性选择和电荷载体性质以增强溶解的镧系元素络合物的电致发光。本项目包括1）筛选用于低熔点深共熔溶剂形成的手性氢键供体; 2）表征深共熔溶剂的物理性质; 3）表征镧系元素络合物在成功的深共熔溶剂中的手性光学性质;以及4）从成功的深共熔溶剂/镧系元素系统开发圆偏振有机发光二极管。高通量的方法来筛选深共熔溶剂的性质在这个项目中产生了大量的数据，深共熔溶剂的结构属性的关系，将在一个公共数据库中共享，以帮助研究界开发更好的预测模型。这个奖项反映了NSF的法定使命，并已被认为是值得通过评估使用基金会的知识价值和更广泛的影响审查标准的支持。

In this project, funded by the Chemical Structure, Dynamic & Mechanism B Program of the Chemistry Division, Professor Todd A. Hopkins of the Department of Chemistry and Biochemistry at Butler University is developing unique solvents called deep eutectic solvents as circularly polarized light emitting materials. Deep eutectic solvents are well suited to the task, because of the ability to control their properties. This project explores how to design deep eutectic solvents that improve the efficiency of emitted circularly polarized light. Circularly polarized light emitting materials, such as circularly polarized organic light emitting diodes, have potential application in quantum computing, for generating holographic images, and as security labels. This project engages undergraduate students in research at the interface of physical, inorganic, and materials chemistry, and involves collaboration between undergraduate research students and students enrolled in a physical chemistry laboratory course. More technically, the goal of this project is to develop circularly polarized light emitting materials based on luminescent lanthanide complexes dissolved in deep eutectic solvents. Deep eutectic solvents are formed from combinations of hydrogen bond acceptor and donors, whose properties can be controlled through choice of components. Therefore, the selection of hydrogen bond acceptor with chiral hydrogen bond donor can generate a deep eutectic solvent that provides both chiral selection and charge carrier properties to enhance electroluminescence of the dissolved lanthanide complexes. This project involves 1) screening chiral hydrogen bond donors for low melting point deep eutectic solvent formation; 2) characterizing the physical properties of the deep eutectic solvents; 3) characterizing the chiroptical properties of lanthanide complexes in the successful deep eutectic solvents; and 4) developing circularly polarized organic light emitting diodes out of the successful deep eutectic solvent/lanthanide systems. The high-throughput approach to screening deep eutectic solvent properties in this project yields a large amount of data on deep eutectic solvent-structure property relationships that will be shared in a public database to help the research community develop better predictive models.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.