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Collaborative Research: Isotopologue Synthesis and Use for Elucidating Important Chemical Mechanisms of Organic Condensation Reactions in Atmospheric Particles

合作研究：同位素体合成及其用于阐明大气颗粒中有机缩合反应的重要化学机制

基本信息

批准号：
2003359
负责人：
Regan Thomson
金额：
$ 30万
依托单位：
Northwestern University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2020
资助国家：
美国
起止时间：
2020-09-01 至 2023-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2003359&HistoricalAwards=false
关键词：
Collaborative Research Isotopologue Synthesis Use

项目摘要

This award from the Environmental Chemical Sciences Program of the Chemistry Division supports Professor Scot Martin of Harvard University and Professor Regan Thomson of Northwestern University. Their collaborative research addresses the complex roles played in the atmosphere by volatile organic molecules that are derived from plants. These molecules exchange between gases and particles in the atmosphere in ways that are poorly understood. Atmospheric particles, also known as aerosols, affect many important atmospheric processes, such as cloud formation, and the Earth's climate. The research team utilizes synthetic organic chemistry to make molecules thought to exist in the atmosphere and uses them in experiments designed to simulate atmospheric conditions. The outcome of this research may be an improved understanding of atmospheric processes, which allows for more accurate modelling of the weather and climate system. The research provides opportunities for students at both institutions as well as peer-to-peer learning. Through the "Faces of Science" YouTube series the researchers communicate science and personal stories to the general public, engaging diverse audiences. This collaboration combines expertise in synthetic organic chemistry with expertise in atmospheric science. The team is advancing the understanding of the complex chemical processes in the particle phase of secondary organic aerosol particles. The synthesis enables access to a suite of complex, non-commercially available, yet highly atmospherically-relevant molecules with isotopic labeling. In particular, pinene isotopologue probes enable detailed studies of volatile biogenic terpenes. The aerosol experiments provide detailed mechanistic information regarding the formation and growth of atmospheric organic particles, as derived by use of the isotopologue probe species under varying conditions. Competing hypotheses of the prevailing chemical mechanisms are being tested and thus elucidate mechanistic aspects of oxidation/accretion pathways and particle formation.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.

这一奖项来自化学系环境化学科学项目，支持哈佛大学的斯科特·马丁教授和西北大学的里根·汤姆森教授。他们的合作研究解决了从植物中提取的挥发性有机分子在大气中扮演的复杂角色。这些分子在大气中的气体和颗粒之间以一种鲜为人知的方式进行交换。大气颗粒，也被称为气溶胶，影响许多重要的大气过程，如云的形成和地球的气候。研究小组利用合成有机化学来制造被认为存在于大气中的分子，并将其用于旨在模拟大气条件的实验。这项研究的结果可能是对大气过程的更好理解，从而允许对天气和气候系统进行更准确的建模。这项研究为这两个机构的学生提供了机会，也为对等学习提供了机会。通过“科学的面孔”YouTube系列节目，研究人员向公众传播科学和个人故事，吸引不同的受众。这一合作结合了合成有机化学方面的专业知识和大气科学方面的专业知识。该团队正在推进对次级有机气溶胶颗粒颗粒相中复杂化学过程的理解。这种合成使人们能够获得一套复杂的、非商业用途的、但与大气高度相关的分子，并进行同位素标记。尤其是，蒎烯同位素探针可以对挥发性生物萜类进行详细的研究。气溶胶实验提供了有关大气有机颗粒形成和生长的详细机制信息，这些信息是通过在不同条件下使用同位素探针物种得出的。目前正在测试主流化学机制的相互竞争的假说，从而阐明氧化/吸积途径和颗粒形成的机制方面。这一奖项反映了NSF的法定使命，并通过使用基金会的智力优势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

期刊论文数量（8）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Synthesis Enabled Investigations into the Acidity and Stability of Atmospherically-relevant Isoprene-derived Organosulfates

合成使得能够研究与大气相关的异戊二烯衍生的有机硫酸盐的酸度和稳定性

DOI：
10.26434/chemrxiv-2022-pbbr5-v2
发表时间：
2022
期刊：
ChemRxiv
影响因子：
0
作者：
Varelas, J. G.;Vega, M. M.;Upshur, M. A.;Geiger, F. M.;Thomson, R. J.
通讯作者：
Thomson, R. J.

Molecular Chirality and Cloud Activation Potentials of Dimeric α-Pinene Oxidation Products

DOI：
10.1021/jacs.1c07509
发表时间：
2021-10-04
期刊：
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
影响因子：
15
作者：
Bellcross, Aleia;Be, Ariana Gray;Thomson, Regan J.
通讯作者：
Thomson, Regan J.

Gas-Particle Uptake and Hygroscopic Growth by Organosulfate Particles

有机硫酸盐颗粒的气体颗粒吸收和吸湿生长

DOI：
10.1021/acsearthspacechem.2c00195
发表时间：
2022
期刊：
ACS Earth and Space Chemistry
影响因子：
3.4
作者：
Ohno, Paul E.;Wang, Junfeng;Mahrt, Fabian;Varelas, Jonathan G.;Aruffo, Eleonora;Ye, Jianhuai;Qin, Yiming;Kiland, Kristian J.;Bertram, Allan K.;Thomson, Regan J.
通讯作者：
Thomson, Regan J.

Ring-opening yields and auto-oxidation rates of the resulting peroxy radicals from OH-oxidation of α-pinene and β-pinene