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.

在化学结构，动力学和机制B计划资助的该项目中，佛罗里达州立大学化学和生物化学系的Lei Zhu教授正在开发能够发出超过一种色调（即多种发射）以产生复合颜色的新有机荧光分子。 该项目可能导致节能发光材料。 这项研究是独一无二的，因为将电能输入到设备上的电能输入可能导致不同颜色的产生。 该项目在于化学，材料和物理学的界面，因此非常适合对知名科学家的教育。 外展活动包括开发有关光的化学和物理学课程，该课程针对上流社会的本科生和STEM学科的早期研究生。 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热激活的延迟荧光（TADF）。 除了基本的分子光物理学外，研究计划还包括在进行有机发光二极管（OLED）中有机发射器稳定性的技术创新。 在第一个目标中，将确定将提供依赖激发依赖双重发射途径的结构因素。 在第二个目标中，将研究易于制备的新的有机染料，重点是它们的TADF潜力。 TADF的能力可能会增加OLED中光子转化效率的电力，并且具有强烈的商业利益。 具有TADF能力和亮度的化合物将被评估为OLED中的发射剂。 在第三个目标中，第一个目标中描述的激发依赖性属性将包括在第二个目标的TADF脚手架中，以提供能够双重排放的明亮，稳定和激发依赖的TADF染料。该奖项反映了NSF的法规任务，并被认为是通过基金会的知识优点和广泛的范围来评估的，并且值得通过评估来进行评估。

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