CAREER: Phosphorescent Organic Light Emitting Diode Materials Featuring Multidentate Carborane-Based Ligands

职业：具有多齿碳硼烷配体的磷光有机发光二极管材料

• 批准号: 1846849
• 负责人: Alexander Spokoyny
• 金额: $ 60万
• 依托单位: University of California-Los Angeles
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-04-01 至 2024-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1846849&HistoricalAwards=false
• 关键词: CAREER; Phosphorescent; Organic; Light; Emitting

In this CAREER project, funded by the Chemical Structure, Dynamics & Mechanisms B Program of the Chemistry Division, Professor Alexander Spokoyny of the Department of Chemistry and Biochemistry at the University of California, Los Angeles (UCLA) are developing new luminescent transition metal-based complexes featuring boron cluster building blocks for use in luminescent lighting applications. The goal of this research is to use these unique boron cluster-based scaffolds to create stable and efficient deep blue emitters for use in organic light emitting diode (OLED) devices, potentially resulting in the next generation of television screens, mobile phone displays, and solid-state lighting sources. The project lies at the interface of synthetic inorganic, organometallic and materials chemistry, and is well suited for the education and training of scientists at all levels. Three key target audiences were chosen for outreach, which include middle and high school students through experimental summer science camps, and inmate members of the California Institute for Women (CIW) as part of the UCLA Prison Education project. These educational and outreach activities create excitement towards the potential positive changes scientific careers can hold for younger students. This project centers on the development of new photophysically-innocent ligand scaffolds based on polyhedral boron clusters. Currently utilized classical polyaromatic ligands attached to metal centers within the flat square planar geometry can lead to undesirable color dilution and non-radiative decay pathways due to intermolecular stacking interactions. Boron clusters are used to counteract these issues providing the three-dimensional steric bulk capable of minimizing intermolecular interactions in the solid-state. Furthermore, boron cluster ligands are synthetically appealing, given that they place functional groups at specific vertices, thus allowing for a large degree of tunability. In this project, new substitution chemistry is used to tune the emitter color through the ligand coordinated to the platinum(II)center. Furthermore, boron cluster species may provide extraordinarily large frontier orbital gaps in their unfunctionalized form, making them photophysically innocent in the context of designing metal-based phosphorescent emitters.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.

在这个由化学部化学结构、动力学机制B计划资助的CAREER项目中，洛杉矶加州化学和生物化学系的亚历山大·斯波科尼教授正在开发新的发光过渡金属基络合物，其特征是用于发光照明应用的硼簇结构单元。&这项研究的目标是使用这些独特的硼簇基支架来制造用于有机发光二极管（OLED）设备的稳定和高效的深蓝色发射器，可能导致下一代电视屏幕，移动的手机显示器和固态照明光源。该项目位于合成无机、有机金属和材料化学的交界处，非常适合各级科学家的教育和培训。选择了三个关键的目标受众进行推广，其中包括通过实验性夏季科学营的初中和高中学生，以及作为加州大学洛杉矶分校监狱教育项目一部分的加州妇女研究所（CIW）的囚犯。这些教育和推广活动为年轻学生创造了对科学事业可能发生的积极变化的兴奋。这个项目的中心是基于多面体硼簇的新型无放射性的配体支架的开发。目前使用的经典聚芳族配体连接到金属中心内的平坦的正方形平面几何形状可能会导致不希望的颜色稀释和非辐射衰减途径，由于分子间的堆叠相互作用。硼簇用于抵消这些问题，提供能够最小化固态中的分子间相互作用的三维空间体积。此外，硼簇配体在合成上是有吸引力的，因为它们将官能团置于特定的顶点，从而允许很大程度的可调谐性。在这个项目中，新的取代化学被用来调整发射器的颜色，通过配体协调铂（II）中心。此外，硼簇物种可能会提供非常大的前线轨道间隙在其非功能化的形式，使他们在设计金属基磷光emitters. This奖项的背景下，体现了NSF的法定使命，并已被认为是值得通过使用基金会的智力价值和更广泛的影响审查标准进行评估的支持。

项目成果

Enhancing cycling stability of tungsten oxide supercapacitor electrodes via a boron cluster-based molecular cross-linking approach

通过基于硼簇的分子交联方法增强氧化钨超级电容器电极的循环稳定性

• DOI: 10.1039/d0ta05915c
• 发表时间: 2020
• 期刊: Journal of Materials Chemistry A
• 影响因子: 11.9
• 作者: Jung, Dahee;Muni, Mit;Marin, Gustavo;Ramachandran, Roshini;El-Kady, Maher F.;Balandin, Tanya;Kaner, Richard B.;Spokoyny, Alexander M.
• 通讯作者: Spokoyny, Alexander M.

A molecular boron cluster-based chromophore with dual emission

• DOI: 10.1039/d0dt00826e
• 发表时间: 2020-12-07
• 期刊: DALTON TRANSACTIONS
• 影响因子: 4
• 作者: Anderson, Kierstyn P.;Waddington, Mary A.;Spokoyny, Alexander M.
• 通讯作者: Spokoyny, Alexander M.

Synthesis and luminescence of monohalogenated B18H22 clusters

• DOI: 10.1016/j.poly.2022.116099
• 发表时间: 2022-09-15
• 期刊: POLYHEDRON
• 影响因子: 2.6
• 作者: Anderson, Kierstyn P.;Rheingold, Arnold L.;Spokoyny, Alexander M.
• 通讯作者: Spokoyny, Alexander M.

Electrochemical Cycling of Redox-Active Boron Cluster-Based Materials in the Solid State

• DOI: 10.1021/jacs.3c03065
• 发表时间: 2023-06-23
• 期刊: JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
• 影响因子: 15
• 作者: Ready，Austin D.;Irshad，Ahamed;Spokoyny，Alexander M.
• 通讯作者: Spokoyny，Alexander M.