Multi-State Organic Fluorophores

多态有机荧光团

• 批准号: 1566011
• 负责人: Lei Zhu
• 金额: $ 43.5万
• 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: 2016
• 资助国家: 美国
• 起止时间: 2016-08-01 至 2021-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1566011&HistoricalAwards=false
• 关键词: Multi; State; Organic; Fluorophores

In this project funded by the Chemical Structure, Dynamics & Mechanisms B Program of the Chemistry Division, Professors Lei Zhu and Kenneth L Knappenberger of the Department of Chemistry and Biochemistry at Florida State University are developing new organic fluorescent molecules that are individually capable of emitting light of different colors. The goal of this research is to understand the fundamental molecular structural requirements that give rise to the unique property of multiple emissions. These multi-emitting molecules can be developed into components of energy-efficient, light-emitting materials. This project lies at the interface of organic, physical, and materials chemistry, and is therefore well suited to the education of scientists at all levels across disciplines in chemistry. This research group is ethnically and culturally diverse, which is also well-positioned to provide the highest level of education and training for students underrepresented in science. Outreach activities include developing short courses targeting non-chemistry students on the societal impact of chemical research, and a summer workshop on training college students on the promises and perils of original research. A multi-state organic fluorophore is one that undergoes ground state equilibria and/or excited state transformations to result in simultaneous fluorescence at different wavelengths (i.e., multiple emission). The goal of this project is to understand the fundamental molecular photophysics of novel multi-state organic fluorophores. By doing so, means to control the overall brightness and color mixing of a multi-fluorescence profile can be developed to afford, for example, white light emission. Bright, near-white light-emitting fluorophores are assessed for their potential utility in electroluminescence-based energy-efficient lighting devices. Fluorophores that are capable of rapid intra- or intermolecular proton transfer either in the excited or the ground state (i.e., proton transfer dyes) are the specific multi-state fluorophores under investigation in this application. The photophysical properties of these compounds are studied by quantum mechanical calculations, steady-state and ultrafast time-resolved spectroscopies. If successful, new fluorescent compounds with utility in white light-emitting materials will be identified.

在这个由化学系化学结构、动力学机制B计划资助的项目中，佛罗里达州立大学化学与生物化学系的朱磊教授和Kenneth L Knappenberger教授正在开发新的有机荧光分子，这些分子能够单独发射不同颜色的光。 这项研究的目标是了解产生多重发射的独特性质的基本分子结构要求。 这些多发射分子可以被开发成节能发光材料的组件。 该项目处于有机化学、物理化学和材料化学的交叉点，因此非常适合化学各学科各级科学家的教育。 这个研究小组是种族和文化多样性，这也是很好的定位，以提供最高水平的教育和培训的学生在科学中代表性不足。 外联活动包括针对非化学专业学生开设关于化学研究的社会影响的短期课程，以及举办关于培训大学生了解原创性研究的前景和风险的暑期讲习班。多状态有机荧光团是经历基态平衡和/或激发态转换以导致在不同波长下同时荧光的荧光团（即，多重发射）。 这个项目的目标是了解新型多状态有机荧光团的基本分子物理学。 通过这样做，可以开发控制多荧光分布的总体亮度和颜色混合的装置，以提供例如白色光发射。 明亮的，近白色的光发射荧光团的潜在效用的电致发光为基础的节能照明设备进行评估。 能够在激发态或基态（即，质子转移染料）是本申请中研究的特定的多状态荧光团。 通过量子力学计算、稳态和超快时间分辨光谱研究了这些化合物的物理性质。 如果成功的话，新的荧光化合物与实用的白色发光材料将被确定。