RUI: Chiral Deep Eutectic Solvents: Developing Circularly Polarized Light Emitting Materials

在这个由化学系化学结构、动力学和机理B计划资助的项目中，巴特勒大学的霍普金斯教授正在研究基于深共熔溶剂和发光镧系元素的圆偏振光发射材料。圆偏振光发射材料在许多应用中是潜在有用的，包括量子计算，作为安全标签，以及作为增加显示器亮度的一种方式。低共熔溶剂是通过混合两种或多种组分以产生具有可控性质的独特溶剂而形成的。该项目探索了新的低共熔溶剂的设计，其性质可以提高溶解的发光镧系元素的圆偏振光发射效率。将所得的深共晶溶剂-镧系元素组合探索为圆偏振有机发光二极管中的发光层。该项目的结果将有助于由霍普金斯博士的研究小组维护的低共熔溶剂的公开数据库。该项目将为本科生提供培训和研究经验。该项目将在物理，无机和材料化学的接口从事本科生的研究。物理化学实验课程的学生将在研究项目中进行合作，并将与深共熔溶剂和发光材料相关的主题纳入物理化学讲座课程。本项目的目标是开发基于手性深共熔溶剂（DES）/共熔混合物的圆偏振光发光材料，该材料可用作发光镧系络合物的溶剂。为了实现这一目标，该项目将1）开发和表征具有手性成分的二元和三元DES/低共熔混合物; 2）表征溶解在开发的手性DES/低共熔混合物中的发光镧系元素络合物的光致和电致发光圆偏振发光（CPL）特性。低共熔溶剂/低共熔混合物是具有比组分（两种或更多种）更低的熔点的混合物，并且它们的性质（例如手性识别）可以通过组分的选择来控制。该项目将探讨二元和三元DES/混合物的手性和非手性组分在其从溶解的发光镧系络合物诱导CPL的能力中的作用。手性DES +镧系元素配合物的成功组合将被引入到圆偏振有机发光二极管（CP-OLED）中，以确定其作为圆偏振发光材料的适用性。完成后，该项目将提供新的策略，以优化材料，显示圆偏振发光。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智力价值和更广泛的影响审查标准的支持。

In this project, funded by the Chemical Structure, Dynamics, and Mechanisms B Program of the Chemistry Division, Professor Hopkins of Butler University is studying circularly polarized light emitting materials based on deep eutectic solvents and luminescent lanthanides. Circularly polarized light emitting materials are potentially useful in a number of applications, including quantum computing, as security labels, and as a way to increase the brightness of a display. Deep eutectic solvents are formed by mixing two or more components to yield a unique solvent with controllable properties. This project explores the design of new deep eutectic solvents with properties that improve the efficiency of circularly polarized light emission by dissolved luminescent lanthanides. The resulting deep eutectic solvent-lanthanide combinations are explored as emitting layers in circularly polarized organic light emitting diodes. The results of this project will contribute to a publicly available database of deep eutectic solvents maintained by Dr. Hopkins’ research group. This project will result in training and research experiences for undergraduate students. The project will engage undergraduate students in research at the interface of physical, inorganic, and materials chemistry. The students enrolled in a physical chemistry laboratory course will collaborate on the research project, and topics related to deep eutectic solvents and light emitting materials will be incorporated into the physical chemistry lecture curriculum.The goal of this project is to develop circularly polarized light emitting materials based on chiral deep eutectic solvents (DES)/eutectic mixtures that serve as solvents to luminescent lanthanide complexes. In order to achieve the objective, the project will 1) develop and characterize binary and ternary DES/eutectic mixtures with chiral components; and 2) characterize the photo- and electroluminescent circularly polarized luminescence (CPL) properties of luminescent lanthanide complexes dissolved in the developed chiral DES/eutectic mixtures. Deep eutectic solvents/eutectic mixtures are mixtures that have a lower melting point than the components (two or more), and their properties, such as chiral recognition, can be controlled by choice of components. This project will explore the role of both chiral and achiral components of binary and ternary DES/mixtures in their ability to induce CPL from dissolved luminescent lanthanide complexes. The successful combinations of chiral DES + lanthanide complex will be incorporated into circularly polarized organic light emitting diodes (CP-OLEDs) to determine their suitability as circularly polarized light emitting materials. When completed, the project would provide new strategies to optimize materials that display circularly polarized luminescence.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.