CAREER: Baird's Polycyclic Anti-Aromatic Chromophores & Application to Engineer Crystalline Dyads for Photon Upconversion in the Solid State

职业生涯：贝尔德的多环反芳香族发色团

• 批准号: 1753012
• 负责人: Anoklase Ayitou
• 金额: $ 64.99万
• 依托单位: Illinois Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-06-01 至 2022-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1753012&HistoricalAwards=false
• 关键词: CAREER; Baird; Polycyclic; Anti; Aromatic

In this CAREER project, funded by the Chemical Structure, Dynamic & Mechanism B Program of the Chemistry Division, Professor Anoklase Ayitou of the Department of Chemistry at Illinois Institute of Technology is developing novel aromatic chromophores and their dyad derivatives for photon upconversion. Photon upconversion is a solar energy management process that can help maximize the efficiency of current photovoltaic devices or solar cells. The ultimate goal of this research is to exploit the photophysical properties of organic light harvesting systems to devise next generation organic photonic materials. These materials can be further derivatized to engineer not only high-efficiency photovoltaic devices but also materials for biological imaging. Professor Ayitou and his team use the tools of synthetic organic chemistry, computational modeling, advanced spectroscopy and crystallography in this project, which presents a mosaic of scientific techniques, educational and outreach activities that benefit the scientific community and students of all levels. To this end, Professor Ayitou mentors and provides training for students who participate in this research. Additionally, the educational component of the project includes outreach activities that promote STEM education at Illinois Institute of Technology and in the South Side Communities of Chicago. Baird's antiaromaticity is a characteristic of chromophores that showcase 4n-pi electrons in the ground state and (4n+2)-pi "aromatic species" upon photoexcitation. This project aims to understand how tuning the intrinsic (4n+2)-pi aromaticity of polycyclic diimides can generate novel polycyclic chromophores that exhibit Baird's antiaromaticity. Another aspect of this project is the synthesis of polycyclic antiaromatic chromophores (PAC) based organic dyads, which can be used to explore energy/photon upconversion phenomenon. Overall, the results from this project help unravel the following questions: (1) can the proposed PAC be more/less antiaromatic with respect to the degree of pi-extension of their molecular core? (2) would aromatic extension of PAC help modulate their photophysical properties? (3) can the PAC-dyads exhibit superior photophysical properties in comparison with native PAC in photon upconversion? and (4) can materials from these dyads be used as ingredients for photovoltaic and optical devices fabrication and for biological imaging?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.

在这个由化学系化学结构、动力学机制B计划资助的CAREER项目中，伊利诺伊理工大学化学系的Anoklase Ayitou教授正在开发用于光子上转换的新型芳香族发色团及其二联体衍生物。 光子上转换是一种太阳能管理过程，可以帮助最大限度地提高当前光伏器件或太阳能电池的效率。本研究的最终目标是利用有机光捕获系统的光物理特性来设计下一代有机光子材料。这些材料可以进一步衍生化，不仅可以设计高效的光伏器件，还可以设计用于生物成像的材料。Ayitou教授和他的团队在这个项目中使用合成有机化学，计算建模，高级光谱学和晶体学的工具，它提供了一个科学技术，教育和推广活动的马赛克，使科学界和各级学生受益。为此，Ayitou教授指导并为参与这项研究的学生提供培训。此外，该项目的教育部分包括在伊利诺伊理工学院和芝加哥南区社区推广STEM教育的外联活动。贝尔德反芳香性是发色团的特征，其在基态展示4 n-π电子，并且在光激发时展示（4 n +2）-π“芳香物质”。本计画旨在了解如何调整多环二酰亚胺的固有（4 n +2）-π芳香性，以产生具有贝尔德反芳香性的新型多环发色团。本项目的另一个方面是合成基于多环反芳族发色团（PAC）的有机二元体，其可用于探索能量/光子上转换现象。总的来说，从这个项目的结果有助于解开以下问题：（1）可以建议PAC是更多/更少的反芳族相对于其分子核心的π-延伸的程度？(2)PAC的芳烃延伸是否有助于调节它们的物理化学性质？(3)PAC-二联体在光子上转换中是否能表现出比天然PAC更上级的光物理性质？以及（4）来自这些二元体的材料能否用作光伏和光学器件制造以及生物成像的成分？该奖项反映了NSF的法定使命，并被认为是值得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的支持。

项目成果

Quench-free enhanced emission in cluster-free Er-doped heavy metal oxide glasses

• DOI: 10.1364/ome.9.001072
• 发表时间: 2019-03
• 期刊: Optical Materials Express
• 影响因子: 2.8
• 作者: K. Lipinska;F. Cavallo;A. Ayitou;C. Segre

Interplay between Energy and Charge Transfers in a Polyaromatic Triplet Donor–Acceptor Dyad

• DOI: 10.1021/acs.jpcc.0c01530
• 发表时间: 2020-05
• 期刊: Journal of Physical Chemistry C
• 影响因子: 3.7
• 作者: Young Ju Yun;N. Kamatham;Manoj K. Manna;Jingbai Li;Shuyang Liu;G. Wiederrecht;D. Gosztola;B. Diroll;A. Rogachev