Excitation-Dependent Multi-State Organic Fluorophores

激发依赖性多态有机荧光团

• 批准号: 1955262
• 负责人: Lei Zhu
• 金额: $ 46万
• 依托单位: Florida State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-08-01 至 2025-07-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1955262&HistoricalAwards=false
• 关键词: Excitation; Dependent; Multi; State; Organic

In this project funded by the Chemical Structure, Dynamics & Mechanisms B Program of the Chemistry Division, Professor Lei Zhu of the Department of Chemistry and Biochemistry at Florida State University is developing new organic fluorescent molecules that are capable of emitting light of more than one hue (i.e., multiple emission) to produce composite colors. The project could lead to energy-efficient light-emitting materials. The research is unique as dialing up or down the electrical energy input to the device could lead to the production of different colors. This project lies at the interface of chemistry, materials, and physics and is therefore well suited to the education of well-informed scientists. Outreach activities include developing a course on the chemistry and physics of light that targets upper-class undergraduate students and early graduate students in STEM disciplines. The new course aims to enhance the students' understanding of light-involved science and technologies, which is and will be at the forefront of the efforts to improve the well-being, and satisfying the curiosity, of society with contributions to a vast range of areas from energy sectors to space exploration.In more technical terms, this project aims to provide structural models to produce excitation-dependent dual-emitting fluorophores, including one class that has the potential to undergo thermally-activated delayed fluorescence (TADF). Beside fundamental molecular photophysics, the research program also includes technical innovation in characterizing the stability of organic emitters in an operating organic light-emitting diode (OLED). In the first objective, the structural factors that would provide a pathway of excitation-dependent dual emission will be identified. In the second objective, a new class of organic dyes that are easy to prepare will be studied with the focus on their potential for TADF. The ability of TADF may increase the electricity to photon conversion efficiency in an OLED, and is of intense commercial interests. The compounds that are both TADF-capable and bright will be evaluated as emitters in OLEDs. In the third objective, the excitation-dependent properties that are described in the first objective will be included in the TADF scaffolds from the second objective to offer bright, stable, and excitation-dependent TADF dyes capable of dual emission.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.

佛罗里达州立大学化学与生物化学系的朱磊教授，在化学学部化学结构、动力学与机理B项目的资助下，正在开发一种新型有机荧光分子，这种分子能够发出多种色相的光（即多次发射），从而产生复合颜色。该项目可能会带来节能发光材料。这项研究的独特之处在于，增加或减少输入设备的电能可能会产生不同的颜色。这个项目位于化学、材料和物理的交叉点，因此非常适合知识渊博的科学家的教育。拓展活动包括开发一门关于光的化学和物理的课程，目标是STEM学科的高年级本科生和早期研究生。新课程旨在提高学生对光相关科学技术的理解，这些科学技术现在和将来都将站在从能源部门到太空探索等广泛领域改善社会福祉和满足社会好奇心的最前沿。在更多的技术术语中，该项目旨在提供结构模型来产生依赖于激发的双发射荧光团，包括一类有可能经历热激活延迟荧光（TADF）的荧光团。除了基本的分子光物理学，该研究项目还包括表征工作有机发光二极管（OLED）中有机发射体稳定性的技术创新。在第一个目标中，将确定提供激励依赖双发射途径的结构因素。在第二个目标中，将研究一类易于制备的新型有机染料，重点研究它们在TADF中的潜力。TADF的能力可以提高OLED中电转光子的转换效率，具有强烈的商业利益。同时具有tadf能力和亮度的化合物将作为oled的发射体进行评估。在第三个目标中，在第一个目标中描述的激发依赖特性将被包含在第二个目标的TADF支架中，以提供明亮、稳定和能够双发射的激发依赖的TADF染料。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。

项目成果

Luminescence and Stability of 1,4,5‐Triaryl‐1,2,3‐Triazoles

1,4,5—三芳基—1,2,3—三唑的发光和稳定性

• DOI: 10.1002/cphc.202300209
• 发表时间: 2023
• 期刊: ChemPhysChem
• 影响因子: 2.9
• 作者: Nusser, Brandon D.;Accardo, Joseph V.;Zhu, Lei
• 通讯作者: Zhu, Lei