Controlling the Synthesis and Placement of Organic Color-Centers with Light

用光控制有机色心的合成和放置

• 批准号: 2204202
• 负责人: YuHuang Wang
• 金额: $ 48.85万
• 依托单位: University of Maryland, College Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-08-01 至 2025-07-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2204202&HistoricalAwards=false
• 关键词: Controlling; Synthesis; Placement; Organic; Color

With support from the Macromolecular, Supramolecular and Nanochemistry (MSN) program in the Division of Chemistry, Professor YuHuang Wang of the University of Maryland College Park will address the synthetic challenge of the controlled placement of organic color-centers, also known as quantum defects, on the surface of single-walled carbon nanotubes. These atomic defects can emit photons—the elementary particles of light—one at a time, creating a source of single photons; however, they typically exist randomly within the solid, lacking the synthetic control required for achieving control over atomic structure, placement on the surface and color tuning. Controlled placement of organic color-centers on the surface of single-walled carbon nanotubes would enable the nanotubes to emit single, short wave infrared photons at room temperature. Success in accomplishing the objective of the project would enable the creation and tuning of identical organic colo- centers emitting single wavelengths for emerging applications in bio-imaging, molecular sensing, and quantum information science. In addition to the involvement of graduate and undergraduate students, particularly from under-represented groups, in cutting-edge research, the project will also involve developing engaging nanoscience and technology demonstrations based on project results and sharing these with others in community outreach events. In this project, Professor Wang and his team will synthesize model defect color-centers by covalently attaching small functional groups to semi-conducting carbon nanotube hosts using organic chemistry. When the nanotube is excited, the resulting excitons—or electron-hole pairs—are harvested by the organic color-center to produce bright shortwave-infrared single photons whose “color” sensitively depends on the atomic configuration of the defect site. The team will use this optical fingerprint to study how these organic color-centers can be generated, erased, or corrected on the carbon lattice of the nanotube semiconductor using light. This work, if successful, will pave the way to attaining atomic control and deterministic placement of these defect color-centers. The team will also work to advance a method to enable tracing of dark excitons and quantification of the exciton-to-photon conversion efficiency at the defect—a property of fundamental importance to quantum light sources and to the understanding of the excited states of these nanostructures.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.

在化学系高分子、超分子和纳米化学 (MSN) 项目的支持下，马里兰大学帕克分校的 YuHuang Wang 教授将解决有机色心（也称为量子缺陷）受控放置的合成挑战，这些原子缺陷可以一次发射一个光子（光的基本粒子），从而形成单光子源；然而，它们通常随机存在于单壁碳纳米管的内部。固体，缺乏实现对原子结构、表面放置和颜色调节的控制所需的合成控制。单壁碳纳米管表面上的有机色心的受控放置将使纳米管能够发射单个短波红外光子。除了研究生的参与之外，成功实现该项目的目标还将能够创建和调整发射单一波长的相同有机色心，用于生物成像、分子传感和量子信息科学的新兴应用。和王教授和他的团队将在项目成果的基础上开发引人入胜的纳米科学和技术演示，并在社区外展活动中与其他人分享。将使用有机化学将小官能团共价连接到半导体碳纳米管主体上来合成模型缺陷色心。当纳米管被激发时，有机色心会收集产生的激子或电子空穴对以产生。明亮的短波红外单光子的“颜色”敏感地取决于缺陷位点的原子配置，该团队将使用这种光学指纹来研究如何在纳米管的碳晶格上生成、擦除或校正这些有机色心。这项工作如果成功，将为实现这些缺陷色心的原子控制和确定性放置铺平道路，该团队还将致力于推进一种能够追踪暗激子和量化的方法。缺陷处激子到光子的转换效率——这一特性对于量子光源和理解这些纳米结构的激发态至关重要。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。

项目成果

Nanosensor-based monitoring of autophagy-associated lysosomal acidification in vivo

基于纳米传感器的体内自噬相关溶酶体酸化监测

• DOI: 10.1038/s41589-023-01364-9
• 发表时间: 2023-12
• 期刊: Nature Chemical Biology
• 影响因子: 14.8
• 作者: Kim, Mijin;Chen, Chen;Yaari, Zvi;Frederiksen, Rune;Randall, Ewelina;Wollowitz, Jaina;Cupo, Christian;Wu, Xiaojian;Shah, Janki;Worroll, Daniel;et al
• 通讯作者: et al

Engineering defects with DNA

DNA 工程缺陷

• DOI: 10.1126/science.abq2580
• 发表时间: 2022-07
• 期刊: Science
• 影响因子: 56.9
• 作者: Wang; YuHuang
• 通讯作者: YuHuang

van der Waals SWCNT@BN Heterostructures Synthesized from Solution-Processed Chirality-Pure Single-Wall Carbon Nanotubes

由溶液处理的手性纯单壁碳纳米管合成的范德华SWCNT@BN异质结构

• DOI: 10.1021/acsnano.2c07128
• 发表时间: 2022-11
• 期刊: ACS Nano
• 影响因子: 17.1
• 作者: Zhang, Chiyu;Fortner, Jacob;Wang, Peng;Fagan, Jeffrey A.;Wang, Shuhui;Liu, Ming;Maruyama, Shigeo;Wang, YuHuang
• 通讯作者: Wang, YuHuang

Quantum Defects: What Pairs with the Aryl Group When Bonding to the sp 2 Carbon Lattice of Single-Wall Carbon Nanotubes?

量子缺陷：当键合到单壁碳纳米管的 sp 2 碳晶格时，什么与芳基配对？

• DOI: 10.1021/jacs.2c03846
• 发表时间: 2022-07
• 期刊: Journal of the American Chemical Society
• 影响因子: 15
• 作者: Wang, Peng;Fortner, Jacob;Luo, Hongbin;Kłos, Jacek;Wu, Xiaojian;Qu, Haoran;Chen, Fu;Li, Yue;Wang, YuHuang
• 通讯作者: Wang, YuHuang

Rational Structural Design of Polymer Pens for Energy-Efficient Photoactuation

用于节能光驱动的聚合物笔的合理结构设计

• DOI: 10.3390/polym15173595
• 发表时间: 2023-08-29
• 期刊: Polymers
• 影响因子: 5
• 作者: Zhongjie Huang;Le Li;Taishan Yin;K. A. Brown;YuHuang Wang
• 通讯作者: YuHuang Wang