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

在这个由化学学部化学结构、动力学和机理B项目资助的项目中，巴特勒大学的霍普金斯教授正在研究基于深共晶溶剂和发光镧系元素的圆偏振发光材料。圆偏振发光材料在许多应用中都有潜在的用处，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。深共晶溶剂是通过混合两种或两种以上的组分来形成一种具有可控性质的独特溶剂。本项目探索新型深共晶溶剂的设计，该溶剂具有提高溶解发光镧系元素圆偏振光发射效率的特性。所得到的深共晶溶剂-镧系化合物组合在圆极化有机发光二极管中作为发射层进行了探索。该项目的结果将为霍普金斯博士的研究小组维护的一个公开可用的深共晶溶剂数据库做出贡献。该项目将为本科生提供培训和研究经验。该项目将吸引本科生在物理、无机和材料化学的界面进行研究。参加物理化学实验课程的学生将合作进行研究项目，并且与深共晶溶剂和发光材料相关的主题将纳入物理化学课程。该项目的目标是开发基于手性深共晶溶剂(DES)/共晶混合物的圆偏振发光材料，作为发光镧系配合物的溶剂。为了实现这一目标，该项目将1)开发和表征具有手性组分的二元和三元DES/共晶混合物；2)表征了在所开发的手性DES/共晶混合物中溶解的发光镧系配合物的光致和电致圆极化发光（CPL）特性。深共晶溶剂/共晶混合物是具有比组分（两种或两种以上）更低熔点的混合物，其性质，如手性识别，可以通过选择组分来控制。本项目将探索二元和三元DES/混合物的手性和非手性组分在从溶解的发光镧系配合物诱导CPL的能力中的作用。手性DES +镧系配合物的成功组合将被纳入圆偏光有机发光二极管（cp - oled）中，以确定其作为圆偏光发光材料的适用性。完成后，该项目将提供新的策略来优化显示圆偏振发光的材料。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

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.