Dynamics of Molecules in Extreme Rotational States Made with an Optical Centrifuge
用光学离心机制造的极端旋转状态下的分子动力学
基本信息
- 批准号:2155135
- 负责人:
- 金额:$ 54万
- 依托单位:
- 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:2022-08-15 至 2025-07-31
- 项目状态:未结题
- 来源:
- 关键词:
项目摘要
With support from the Chemical Structure, Dynamics and Mechanisms-A (CSDM-A) Program in the Division of Chemistry, Professor Amy Mullin and her team at the University of Maryland-College Park will investigate how molecules behave when they possess significant rotational energy. Many chemical reactions proceed faster when energy is added, usually in the form of increased temperature. Adding heat allows molecules to adopt high-energy configurations from which they can convert into other molecules. In the macroscopic world, energy is a smoothly varying property. However, molecules are small in an absolute sense, and their energy levels are determined by quantum mechanics. A CO2 molecule is 50 billionths of a centimeter in length, and it has discrete energy levels when it rotates and when its atoms vibrate internally. These quantized energy states control the types of molecular motion that help, or hinder, chemical change under high-energy conditions. The importance of the project is to determine how molecular geometry is distorted by large amounts of rotational energy and how this distortion leads to new types of chemical processes. The results of this project will have implications for understanding chemical reactions and are expected to inform research in other fields where high energy molecules are present. Graduate students will have the opportunity to gain experience in sophisticated laser-based approaches. Training workshops will be organized to prepare undergraduate chemistry and biochemistry students for applying to graduate school. Under this award, the Mullin group at U. Maryland will use an ultrafast, tunable optical centrifuge to prepare molecules in extreme rotational energy states with oriented angular momentum. The structure and dynamics of the high energy molecules will be interrogated using high-resolution transient infrared spectroscopy. The optical centrifuge is a strong-field, non-resonant technique that can induce large angular momentum increases in molecules, thereby giving access to a previously unexplored realm. The project will prepare nascent rotational distributions with controllable amounts of energy, and investigate how the molecules undergo collisional relaxation, orientational anisotropy decay, and coupling to vibrational modes. The project will investigate how energy gaps, angular frequencies, and rotational quantum numbers impact the dynamics.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.
在化学系化学结构、动力学和机理(CSDM-A)项目的支持下,马里兰大学帕克分校的艾米·穆林教授和她的团队将研究分子在拥有显著转动能量时的行为。当能量增加时,许多化学反应进行得更快,通常是以温度升高的形式进行。增加热量可以使分子采用高能构型,从而可以转化为其他分子。在宏观世界中,能源是一种平稳变化的属性。然而,分子在绝对意义上是小的,它们的能级由量子力学决定。二氧化碳分子的长度是十亿分之一厘米,当它旋转和原子内部振动时,它有不同的能级。这些量子化的能态控制着分子运动的类型,这些运动有助于或阻碍高能条件下的化学变化。该项目的重要性是确定分子几何结构如何被大量旋转能量扭曲,以及这种扭曲如何导致新类型的化学过程。该项目的结果将对理解化学反应产生影响,并有望为存在高能分子的其他领域的研究提供参考。研究生将有机会获得复杂的基于激光的方法的经验。将组织培训讲习班,为化学和生物化学本科生申请研究生院做准备。根据这一奖项,美国马里兰州的穆林小组将使用一台超快、可调的光学离心机来制备具有定向角动量的极端旋转能量状态的分子。高能分子的结构和动力学将使用高分辨率的瞬时红外光谱进行询问。光学离心机是一种强场、非共振技术,可以在分子中诱导巨大的角动量增加,从而进入一个以前未被探索的领域。该项目将准备具有可控能量的新生旋转分布,并研究分子如何经历碰撞弛豫、取向各向异性衰减和与振动模式的耦合。该项目将调查能隙、角频率和旋转量子数如何影响动力学。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(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
数据更新时间:{{ journalArticles.updateTime }}
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
数据更新时间:{{ journalArticles.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ monograph.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ sciAawards.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ conferencePapers.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ patent.updateTime }}
Amy Mullin其他文献
Children and the Argument from ‘Marginal’ Cases
- DOI:
10.1007/s10677-010-9241-z - 发表时间:
2010-07-28 - 期刊:
- 影响因子:1.400
- 作者:
Amy Mullin - 通讯作者:
Amy Mullin
Children's Hope, Resilience and Autonomy
儿童的希望、韧性和自主性
- DOI:
- 发表时间:
2019 - 期刊:
- 影响因子:1
- 作者:
Amy Mullin - 通讯作者:
Amy Mullin
Reconceiving Pregnancy and Childcare: Reconceiving Pregnancy
重新怀孕和育儿:重新怀孕
- DOI:
10.1017/cbo9780511814280.003 - 发表时间:
2005 - 期刊:
- 影响因子:2.6
- 作者:
Amy Mullin - 通讯作者:
Amy Mullin
Reconceiving Pregnancy and Childcare: Caring for Children, Caring for Friends, Caring by Children
重新怀孕和育儿:关爱孩子、关爱朋友、关爱孩子
- DOI:
10.1017/cbo9780511814280.007 - 发表时间:
2005 - 期刊:
- 影响因子:3.6
- 作者:
Amy Mullin - 通讯作者:
Amy Mullin
Reconceiving Pregnancy and Childcare: What about Birth?
重新怀孕和育儿:出生怎么样?
- DOI:
10.1017/cbo9780511814280.005 - 发表时间:
2005 - 期刊:
- 影响因子:2.5
- 作者:
Amy Mullin - 通讯作者:
Amy Mullin
Amy Mullin的其他文献
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
{{ truncateString('Amy Mullin', 18)}}的其他基金
Dynamics of Molecules in Extreme Rotational States Made with an Optical Centrifuge
用光学离心机制造的极端旋转状态下的分子动力学
- 批准号:
1800531 - 财政年份:2018
- 资助金额:
$ 54万 - 项目类别:
Standard Grant
Spinning Molecules Into Reactive States with an Optical Centrifuge
用光学离心机将分子旋转至反应状态
- 批准号:
1058721 - 财政年份:2011
- 资助金额:
$ 54万 - 项目类别:
Continuing Grant
Reactions of Highly Excited Molecules: From Supercollisions to Super-reactions?
高度激发分子的反应:从超级碰撞到超级反应?
- 批准号:
0552663 - 财政年份:2005
- 资助金额:
$ 54万 - 项目类别:
Continuing Grant
Reactions of Highly Excited Molecules: From Supercollisions to Super-reactions?
高度激发分子的反应:从超级碰撞到超级反应?
- 批准号:
0316836 - 财政年份:2003
- 资助金额:
$ 54万 - 项目类别:
Continuing Grant
Reactions of Highly Excited Molecules: From Supercollisions to Super-reactions?
高度激发分子的反应:从超级碰撞到超级反应?
- 批准号:
0079146 - 财政年份:2000
- 资助金额:
$ 54万 - 项目类别:
Continuing Grant
Dynamics of Highly Excited Hydrocarbons: From Supercollisions to Super-reactions
高激发碳氢化合物的动力学:从超级碰撞到超级反应
- 批准号:
9624533 - 财政年份:1996
- 资助金额:
$ 54万 - 项目类别:
Continuing Grant
Prelude to Hot Chemistry: Preliminary Studies on the Collisional Dynamics of Highly Vibrationally Excited Molecules
热门化学序幕:高振动激发分子碰撞动力学的初步研究
- 批准号:
9510485 - 财政年份:1995
- 资助金额:
$ 54万 - 项目类别:
Standard Grant
相似海外基金
CAREER: Development of New Gas-Releasing Molecules Using a Thiol Carrier
职业:利用硫醇载体开发新型气体释放分子
- 批准号:
2338835 - 财政年份:2024
- 资助金额:
$ 54万 - 项目类别:
Continuing Grant
Collaborative Research: NSF-BSF: How cell adhesion molecules control neuronal circuit wiring: Binding affinities, binding availability and sub-cellular localization
合作研究:NSF-BSF:细胞粘附分子如何控制神经元电路布线:结合亲和力、结合可用性和亚细胞定位
- 批准号:
2321481 - 财政年份:2024
- 资助金额:
$ 54万 - 项目类别:
Continuing Grant
Collaborative Research: NSF-BSF: How cell adhesion molecules control neuronal circuit wiring: Binding affinities, binding availability and sub-cellular localization
合作研究:NSF-BSF:细胞粘附分子如何控制神经元电路布线:结合亲和力、结合可用性和亚细胞定位
- 批准号:
2321480 - 财政年份:2024
- 资助金额:
$ 54万 - 项目类别:
Continuing Grant
CAREER: Photo-induced Ultrafast Electron-nuclear Dynamics in Molecules
职业:分子中光致超快电子核动力学
- 批准号:
2340570 - 财政年份:2024
- 资助金额:
$ 54万 - 项目类别:
Continuing Grant
Flexible metal-organic frameworks (MOFs) for hydrogen isotope separation: insights into smart recognition of gas molecules towards materials design
用于氢同位素分离的柔性金属有机框架(MOF):深入了解气体分子对材料设计的智能识别
- 批准号:
24K17650 - 财政年份:2024
- 资助金额:
$ 54万 - 项目类别:
Grant-in-Aid for Early-Career Scientists
Understanding Emission, Absorption and Energy Transfer Involving Classical and Quantum Light Interacting with Molecules
了解涉及经典光和量子光与分子相互作用的发射、吸收和能量转移
- 批准号:
2347622 - 财政年份:2024
- 资助金额:
$ 54万 - 项目类别:
Standard Grant
Collaborative Research: Leveraging the interactions between carbon nanomaterials and DNA molecules for mitigating antibiotic resistance
合作研究:利用碳纳米材料和 DNA 分子之间的相互作用来减轻抗生素耐药性
- 批准号:
2307222 - 财政年份:2024
- 资助金额:
$ 54万 - 项目类别:
Standard Grant
Compound specific isotopes of polar organic molecules in complex mixtures
复杂混合物中极性有机分子的化合物特定同位素
- 批准号:
LE240100109 - 财政年份:2024
- 资助金额:
$ 54万 - 项目类别:
Linkage Infrastructure, Equipment and Facilities
Atomic-Scale Engineering of Bioactive Organic Molecules on Surfaces
表面生物活性有机分子的原子尺度工程
- 批准号:
DP240100464 - 财政年份:2024
- 资助金额:
$ 54万 - 项目类别:
Discovery Projects