Ultrafast Molecular Sciences

超快分子科学

• 批准号: RGPIN-2022-05325
• 负责人: Stolow, Albert
• 金额: $ 7.5万
• 依托单位: University of Ottawa
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=748206
• 关键词: Ultrafast; Molecular; Sciences

Ultrafast Molecular Sciences is based on ultrashort laser spectroscopies which are sensitive to electronic charge rearrangements in molecules. The goal is to understand the fundamental electronic motions which underlie globally important processes such as photosynthesis, vision and solar energy conversion. Time-Resolved Photoelectron Spectroscopy (TRPES), pioneered by the applicant, is an especially powerful probe of such dynamics. An important new aspect of this proposal is Time-Resolved X-ray Absorption Spectroscopy (TRXAS), an emerging new probe of ultrafast electronic motions which is atom-specific. A new Laboratory for Ultrafast X-ray Sciences, housing the highest average power ultrashort pulse laser in Canada, will produce the stable, bright soft X-ray pulses required for this method. The combination of these two ultrafast spectroscopy techniques within the same lab will advance our fundamental understanding of charge transfer and lead to entirely new design principles, based on dynamics, for solar energy conversion. A secondary outcome of our ultrafast laser expertise is Multimodal Stimulated Raman Microscopy. This chemical-specific imaging method requires no stains, but rather 'labels' molecules according to their natural structure. Although mostly used in Biophotonics and Medicine, we will apply enhanced Stimulated Raman Microscopy to "Geophotonics", specifically to mineralogy where real-time chemical-specific imaging will lead to greener, more efficient ore processing in Canada. The training of the next generation of scientists is another key aspect of this proposal. Ultrafast Molecular Sciences training promotes inclusive leadership by giving key roles to female and underrepresented members in the planning of experiments, in leadership of Roundtable discussions, and in resource allocation. With training in effective communication and high level technical training opportunities in laser and vacuum technologies, high speed electronics and microscopy/imaging, underrepresented trainees will learn firsthand that research excellence is recognized for its merit and not on the basis of active or unconscious biases. Ongoing collaborations with academic, private and public sector partners further prepare trainees for outstanding job opportunities in Canada. The applicant is an acknowledged world leader in ultrafast spectroscopy. His research contributions were recognized by the 2017 "Earle K. Plyler Prize for Molecular Spectroscopy & Dynamics" of the American Physical Society, and the 2018 "John C. Polanyi Award" of the Canadian Society for Chemistry. In 2017, he was appointed Fellow of the Max-Planck-uOttawa Centre for Extreme and Quantum Photonics and, in 2019, Fellow of the NRC-uOttawa Joint Centre for Extreme Photonics. In 2020-21, he was elected Chair of the Division of Chemical Physics of the American Physical Society. In 2021, he was renewed as Tier 1 Canada Research Chair in Molecular Photonics at the University of Ottawa.

超快分子科学是基于超短激光光谱，这是敏感的电子电荷重排分子。目标是了解构成光合作用、视觉和太阳能转换等全球重要过程基础的基本电子运动。由申请人开创的时间分辨光电子能谱（TRPES）是这种动力学的特别强大的探测器。这一提议的一个重要的新方面是时间分辨X射线吸收光谱（TRXAS），这是一种新兴的原子特异性超快电子运动的新探测器。一个新的超快X射线科学实验室，拥有加拿大最高平均功率的超短脉冲激光器，将产生这种方法所需的稳定，明亮的软X射线脉冲。这两种超快光谱技术在同一个实验室中的结合将推进我们对电荷转移的基本理解，并导致基于动力学的太阳能转换的全新设计原理。我们的超快激光专业技术的第二个成果是多模受激拉曼显微镜。这种化学特异性成像方法不需要染色，而是根据分子的天然结构对其进行“标记”。虽然主要用于生物光子学和医学，但我们将把增强型受激拉曼显微镜应用于“地球光子学”，特别是矿物学，其中实时化学特定成像将导致加拿大更绿色，更有效的矿石加工。培训下一代科学家是这项建议的另一个关键方面。Ultrafast Molecular Sciences培训通过在实验规划，圆桌讨论领导和资源分配中为女性和代表性不足的成员提供关键角色来促进包容性领导。通过在激光和真空技术，高速电子和显微镜/成像方面的有效沟通和高水平技术培训机会的培训，代表性不足的学员将直接了解到卓越的研究是因其优点而被认可的，而不是基于主动或无意识的偏见。与学术、私营和公共部门合作伙伴的持续合作进一步为学员在加拿大的出色工作机会做好准备。申请人是超快光谱学领域公认的世界领先者。他的研究贡献得到了2017年“Earle K.美国物理学会的Plyler分子光谱学与动力学奖，以及2018年的John C。波兰尼奖”的加拿大化学学会。2017年，他被任命为Max-Planck-uOttawa极端和量子光子学中心的研究员，并于2019年被任命为NRC-uOttawa极端光子学联合中心的研究员。在2020-21年，他当选为美国物理学会化学物理分部主席。2021年，他被任命为渥太华大学分子光子学一级加拿大研究主席。