CAREER:CAS:Synthetic Strategies Towards Modular Lanthanide and Base-metal Complexes Exhibiting Strong Circularly Polarized Luminescence.

职业：CAS：表现出强圆偏振发光的模块化镧系元素和贱金属配合物的合成策略。

• 批准号: 2041084
• 负责人: Gael Ung
• 金额: $ 68.5万
• 依托单位: University of Connecticut
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-09-01 至 2026-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2041084&HistoricalAwards=false
• 关键词: CAREER; CAS; Synthetic; Strategies; Towards

In this CAREER project, funded by the Chemical Structure, Dynamics & Mechanism B Program of the Chemistry Division, Dr. Gaël Ung of the Department of Chemistry at the University of Connecticut is developing molecules capable of emitting circularly polarized light, light possessing right-handed or left-handed rotation with respect to the direction of propagation. This next-generation light source provides potential opportunities to enhance optical three-dimensional displays, bio-imaging, and security inks. The goal is to obtain molecules emitting strong circularly polarized luminescence in the visible and near-infrared region. This is to be achieved by rigorous evaluation of the relationship between chemical structure and circularly polarized luminescence properties. This project is tied to a research program supporting low-income first-generation college students who typically work part- or full-time to sustain themselves, allowing them to be as successful as other students who can afford to take research in STEM fields without sacrificing financial stability.In this project, Dr. Ung and his group examine the effect of symmetry, structural rigidity, and coordination geometry on the circularly polarized luminescence of lanthanide complexes. Modular ternary lanthanide complexes supported by chiral hexadentate ligands have been designed for the structure-function study. Two specific groups of lanthanides will be studied, either emitting in the visible region, or in the near-infrared region of the spectrum. An appropriate combination of chiral ligand and sensitizer will allow for the synthesis of molecules exhibiting strong circularly polarized luminescence. The team will also examine the effect of ligand substitution on the circularly polarized luminescence of chiral copper complexes, providing a more sustainable alternative for the development of circularly polarized 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.

在这个由化学系化学结构、动力学和机制 B 项目资助的职业项目中，康涅狄格大学化学系的 Gaël Ung 博士正在开发能够发射圆偏振光的分子，即相对于传播方向具有右旋或左旋旋转的光。这种下一代光源为增强光学三维显示器、生物成像和安全墨水提供了潜在的机会。目标是获得在可见光和近红外区域发射强圆偏振光的分子。这是通过严格评估化学结构和圆偏振发光特性之间的关系来实现的。该项目与一项支持低收入第一代大学生的研究计划相关，这些大学生通常通过兼职或全职工作来维持生计，使他们能够像其他有能力在 STEM 领域进行研究的学生一样成功，同时又不牺牲财务稳定性。在这个项目中，Ung 博士和他的团队研究了对称性、结构刚性和配位几何对稀土配合物圆偏振发光的影响。由手性六齿配体支持的模块化三元稀土配合物已被设计用于结构功能研究。将研究两种特定的镧系元素，要么在可见光区域发射，要么在光谱的近红外区域发射。手性配体和敏化剂的适当组合将允许合成表现出强圆偏振发光的分子。该团队还将研究配体取代对手性铜配合物圆偏振发光的影响，为圆偏振发射器的开发提供更可持续的替代方案。该奖项反映了 NSF 的法定使命，并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，被认为值得支持。

项目成果

Synthesis of bright water-soluble circularly polarized luminescence emitters as potential sensors

• DOI: 10.1039/d1qi01398j
• 发表时间: 2022-02-18
• 期刊: INORGANIC CHEMISTRY FRONTIERS
• 影响因子: 7
• 作者: Adewuyi, Joseph A.;Schley, Nathan D.;Ung, Gael
• 通讯作者: Ung, Gael

Circularly Polarized Luminescence from Uranyl Improves Resolution of Electronic Transitions

• DOI: 10.1021/jacs.2c03791
• 发表时间: 2022-06-22
• 期刊: JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
• 影响因子: 15
• 作者: Schnable，David;Schley，Nathan D.;Ung，Gael
• 通讯作者: Ung，Gael

Strong Circularly Polarized Luminescence at 1550 nm from Enantiopure Molecular Erbium Complexes

• DOI: 10.1021/jacs.2c01134
• 发表时间: 2022-04-13
• 期刊: JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
• 影响因子: 15
• 作者: Mukthar, Nishya F. M.;Schley, Nathan D.;Ung, Gael
• 通讯作者: Ung, Gael

Anionic ligand-induced chirality in perovskite nanoplatelets

钙钛矿纳米片中阴离子配体诱导的手性

• DOI: 10.1039/d2cc05469h
• 发表时间: 2023
• 期刊: Chemical Communications
• 影响因子: 4.9
• 作者: Tran, Thi Kim;Adewuyi, Joseph A.;Wang, Yongchen;Morales-Acosta, M. Daniela;Mani, Tomoyasu;Ung, Gaël;Zhao, Jing
• 通讯作者: Zhao, Jing