Polariton and CISS Effects on Photoinduced Electron Transfer from Quantum Confined Semiconductor Nanocrystals

极化子和 CISS 对量子限域半导体纳米晶体光致电子转移的影响

基本信息

  • 批准号:
    2305112
  • 负责人:
  • 金额:
    $ 52万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2023
  • 资助国家:
    美国
  • 起止时间:
    2023-09-01 至 2026-08-31
  • 项目状态:
    未结题

项目摘要

With support from the Macromolecular, Supramolecular and Nanochemistry program in the Division of Chemistry, Professor Tianquan Lian and a team of Emory graduate and undergraduate students are developing two novel ways to control photoinduced electron transfer (ET) from quantum confined semiconductor nanocrystals (NCs), one of the most important processes in photocatalysis and quantum information science. Quantum confined semiconductor NCs are promising novel materials with potential applications in energy conversion and quantum information science. In this project, the first aim is focused on using polaritons formed by coupling NCs with optical cavity modes as a new way to control photoinduced ET. The second aim is focused on NC Donor-chiral Bridge-Acceptor (D-B-A) complexes for selective transfer of light generated spins using chiral-induced spin selectivity (CISS) effects. The goals of the research are: 1) to advance the understanding of the formation and decay dynamics of polariton states; 2) to directly measure polariton mediated ET in NC-molecular acceptor complexes in cavity and test theoretical models; 3) to develop design principles for NCs with both slow electron spin relaxation and fast ET rates; and 4) to advance the understanding CISS effect in photoinduced ET in NC-chiral bridge-acceptor complexes.Molecular polaritons, formed by coupling the molecular electronic or vibrational transition to a photonic cavity mode have received intense interest in chemistry since the reports that they can provide a novel approach for controlling chemical reactions. The proposed effort is focused on polariton mediated electron transfer because of its potential roles in polariton enabled chemical reactions. The proposed study will provide much needed experimental data to test current models of polariton state dynamics and polariton mediated ET, as well as important insights on how to use cavities to control ET rates for many potential applications. Controlling electron spin states is essential for spintronics and quantum information. Although electron spins can be selectively transferred during transport through chiral materials, this process is not understood at the quantitative level. The proposed NC donor-chiral bridge-acceptor platform represents a new approach to combine photonics with spintronics for potential applications in quantum information processing. The proposed study will lead to the development of design principles for NCs with both slow electron spin relaxation and fast ET rates and advance the understanding of the CISS effect in photoinduced ET in NC-chiral bridge-acceptor complexes. The proposed research program also offers unique opportunities for training graduate and undergraduate students and for integrating research with teaching and outreach activities.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.
在化学系大分子,超分子和纳米化学项目的支持下,Tianquan Lian教授和埃默里大学的研究生和本科生团队正在开发两种新的方法来控制量子限制半导体纳米晶体(NC)的光诱导电子转移(ET),这是量子信息科学中最重要的过程之一。量子限制半导体纳米碳是一种新型的量子材料,在能量转换和量子信息科学中具有潜在的应用前景。 本项目的第一个目标是利用纳米粒子与光腔模耦合形成的极化激元作为控制光致电子转移的新途径。第二个目标是集中在NC供体-手性桥-受体(D-B-A)复合物,用于利用手性诱导自旋选择性(CISS)效应选择性转移光产生的自旋。本研究的主要目的是:1)加深对极化激元态的形成和衰减动力学的理解; 2)直接测量腔中NC-分子受体复合物中极化激元介导的电子转移并检验理论模型; 3)发展既有慢电子自旋弛豫又有快电子转移速率的NC的设计原则;(4)进一步理解NC-手性桥受体复合物中光诱导ET的CISS效应。通过将分子电子或振动跃迁耦合到光子腔模式而形成的光子晶体已经在化学中引起了强烈的兴趣,它们可以提供一种控制化学反应的新方法。由于极化激元介导的电子转移在极化激元激活的化学反应中的潜在作用,因此所提出的努力集中在极化激元介导的电子转移上。拟议的研究将提供急需的实验数据,以测试当前的模型极化激元状态动力学和极化激元介导的ET,以及重要的见解,如何使用腔来控制ET率的许多潜在的应用。 控制电子自旋态是自旋电子学和量子信息学的基础。虽然电子自旋可以在通过手性材料的传输过程中选择性地转移,但这个过程在定量水平上还没有被理解。提出的NC给体-手性桥-受体平台代表了一种新的方法,联合收割机光子学与自旋电子学的潜在应用在量子信息处理。该研究将有助于开发具有慢电子自旋弛豫和快ET速率的NC的设计原理,并促进对NC-手性桥受体复合物中光诱导ET的CISS效应的理解。该研究计划还为培养研究生和本科生以及将研究与教学和推广活动相结合提供了独特的机会。该奖项反映了NSF的法定使命,并被认为值得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来支持。

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 }}

Tianquan Lian其他文献

Origins of enhanced oxygen reduction activity of transition metal nitrides
过渡金属氮化物增强氧还原活性的起源
  • DOI:
    10.1038/s41563-024-01998-7
  • 发表时间:
    2024-09-03
  • 期刊:
  • 影响因子:
    38.500
  • 作者:
    Rui Zeng;Huiqi Li;Zixiao Shi;Lang Xu;Jinhui Meng;Weixuan Xu;Hongsen Wang;Qihao Li;Christopher J. Pollock;Tianquan Lian;Manos Mavrikakis;David A. Muller;Héctor D. Abruña
  • 通讯作者:
    Héctor D. Abruña
Homoleptic Al(III) Photosensitizers for Durable CO2 Photoreduction
用于持久 CO2 光还原的均配 Al(III) 光敏剂
  • DOI:
    10.1021/jacs.2c11740
  • 发表时间:
    2023
  • 期刊:
  • 影响因子:
    15
  • 作者:
    Jia-Wei Wang;Fan Ma;Tao Jin;Piao He;Zhi-Mei Luo;Stephan Kupfer;Michael Karnahl;Fengyi Zhao;Zihao Xu;Tao Jin;Tianquan Lian;Yong-Liang Huang;Long Jiang;Li-Zhi Fu;Gangfeng Ouyang;Xiao-Yi Yi
  • 通讯作者:
    Xiao-Yi Yi
Triplet energy transfer from quantum dots increases Ln(span class="small-caps"iii/span) photoluminescence, enabling excitation at visible wavelengths
量子点的三重态能量转移增加了镧系元素(Ln)的光致发光,使得在可见光波长下激发成为可能。
  • DOI:
    10.1039/d3sc05408j
  • 发表时间:
    2024-03-20
  • 期刊:
  • 影响因子:
    7.400
  • 作者:
    Tingting Huang;Sheng He;Anji Ni;Tianquan Lian;Ming Lee Tang
  • 通讯作者:
    Ming Lee Tang
Molecular catalyst coordinatively bonded to organic semiconductors for selective light-driven CO2 reduction in water
用于水中选择性光驱动二氧化碳还原的与有机半导体配位键合的分子催化剂
  • DOI:
    10.1038/s41467-024-54026-2
  • 发表时间:
    2024-11-12
  • 期刊:
  • 影响因子:
    15.700
  • 作者:
    Jia-Wei Wang;Fengyi Zhao;Lucia Velasco;Maxime Sauvan;Dooshaye Moonshiram;Martina Salati;Zhi-Mei Luo;Sheng He;Tao Jin;Yan-Fei Mu;Mehmed Z. Ertem;Tianquan Lian;Antoni Llobet
  • 通讯作者:
    Antoni Llobet
Exciton dissociation dynamics and light-driven H2 generation in colloidal 2D cadmium chalcogenide nanoplatelet heterostructures
  • DOI:
    10.1007/s12274-018-2024-x
  • 发表时间:
    2018-05-22
  • 期刊:
  • 影响因子:
    9.000
  • 作者:
    Qiuyang Li;Tianquan Lian
  • 通讯作者:
    Tianquan Lian

Tianquan Lian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('Tianquan Lian', 18)}}的其他基金

Mechanisms of Triple Energy Transfer and Polaron Formation in Nanocrystals
纳米晶体中三重能量转移和极化子形成机制
  • 批准号:
    2004080
  • 财政年份:
    2020
  • 资助金额:
    $ 52万
  • 项目类别:
    Standard Grant
Exciton Dynamics in Perovskite Quantum Dots and 2D Nanoplatelets
钙钛矿量子点和二维纳米片中的激子动力学
  • 批准号:
    1709182
  • 财政年份:
    2017
  • 资助金额:
    $ 52万
  • 项目类别:
    Continuing Grant
MRI: Acquisition of Ultrafast Transient Absorption Spectrometer
MRI:购买超快瞬态吸收光谱仪
  • 批准号:
    1726536
  • 财政年份:
    2017
  • 资助金额:
    $ 52万
  • 项目类别:
    Standard Grant
Probing Charge Transfer Dynamics in Single QD-Molecule Complexes Using QD or Molecule Modified AFM Tips
使用 QD 或分子修饰 AFM 探针探测单个 QD 分子复合物中的电荷转移动力学
  • 批准号:
    1309817
  • 财政年份:
    2013
  • 资助金额:
    $ 52万
  • 项目类别:
    Continuing Grant
Imaging charge transfer dynamics in nanomaterials using electron donor/acceptor modified AFM tips
使用电子供体/受体改进的 AFM 尖端对纳米材料中的电荷转移动力学进行成像
  • 批准号:
    1212907
  • 财政年份:
    2012
  • 资助金额:
    $ 52万
  • 项目类别:
    Standard Grant
Multi-Exciton Dissociation in Quantum Dots by Ultrafast Charge Transfer to Adsorbates
通过超快电荷转移至吸附物实现量子点中的多激子解离
  • 批准号:
    0848556
  • 财政年份:
    2009
  • 资助金额:
    $ 52万
  • 项目类别:
    Standard Grant
Ultrafast electron transfer at the molecule/nanoparticle junction: A combined single molecule fluorescence and ensemble average transient absorption study
分子/纳米粒子连接处的超快电子转移:单分子荧光和整体平均瞬态吸收相结合的研究
  • 批准号:
    0514662
  • 财政年份:
    2005
  • 资助金额:
    $ 52万
  • 项目类别:
    Continuing Grant
Femtosecond IR Probe of Ultrafast Dynamics of Molecular Adsorbates on Nanoparticles: Solvation and Electron Transfer
纳米颗粒上分子吸附物超快动力学的飞秒红外探针:溶剂化和电子转移
  • 批准号:
    0135427
  • 财政年份:
    2002
  • 资助金额:
    $ 52万
  • 项目类别:
    Continuing Grant
CAREER: Femtosecond Infrared Spectroscopic Study of Interfacial Chemical Reaction Dynamics in Semiconductor Nanoparticle Colloids
职业:半导体纳米颗粒胶体中界面化学反应动力学的飞秒红外光谱研究
  • 批准号:
    9733796
  • 财政年份:
    1998
  • 资助金额:
    $ 52万
  • 项目类别:
    Continuing Grant

相似海外基金

Canadian initiative on social statistics (CISS) data training schools & research centres
加拿大社会统计倡议(CISS)数据培训学校
  • 批准号:
    467485
  • 财政年份:
    2021
  • 资助金额:
    $ 52万
  • 项目类别:
    Directed Grant
Cellular Immunotherapy for Septic Shock (CISS): A Phase II Trial
感染性休克 (CISS) 的细胞免疫疗法:II 期试验
  • 批准号:
    366625
  • 财政年份:
    2016
  • 资助金额:
    $ 52万
  • 项目类别:
    Operating Grants
Canadian initiative on social statistics (CISS) data training schools & research centres
加拿大社会统计倡议(CISS)数据培训学校
  • 批准号:
    347699
  • 财政年份:
    2015
  • 资助金额:
    $ 52万
  • 项目类别:
    Directed Grant
CE21: CS10K: CISS: Computing in Secondary Schools
CE21:CS10K:CISS:中学计算机
  • 批准号:
    1339312
  • 财政年份:
    2014
  • 资助金额:
    $ 52万
  • 项目类别:
    Standard Grant
CE21: CS10K: CISS: Computing in Secondary Schools
CE21:CS10K:CISS:中学计算机
  • 批准号:
    1339270
  • 财政年份:
    2014
  • 资助金额:
    $ 52万
  • 项目类别:
    Standard Grant
Infant Screening of Early Communication Risk: The CISS, Phase II
婴儿早期沟通风险筛查:CISS,第二阶段
  • 批准号:
    9306817
  • 财政年份:
    2013
  • 资助金额:
    $ 52万
  • 项目类别:
Communication in Infants and Social Screener : The CISS
婴儿沟通和社会筛查:CISS
  • 批准号:
    8592654
  • 财政年份:
    2013
  • 资助金额:
    $ 52万
  • 项目类别:
Infant Screening of Early Communication Risk: The CISS, Phase II
婴儿早期沟通风险筛查:CISS,第二阶段
  • 批准号:
    8902769
  • 财政年份:
    2013
  • 资助金额:
    $ 52万
  • 项目类别:
Cellular Immunotherapy for Septic Shock (CISS): A Phase I Trial
感染性休克 (CISS) 的细胞免疫疗法:I 期试验
  • 批准号:
    240247
  • 财政年份:
    2011
  • 资助金额:
    $ 52万
  • 项目类别:
    Operating Grants
Canadian initiative on social statistics (CISS) data training schools & research centres
加拿大社会统计倡议(CISS)数据培训学校
  • 批准号:
    208960
  • 财政年份:
    2009
  • 资助金额:
    $ 52万
  • 项目类别:
    Directed Grant
{{ showInfoDetail.title }}

作者:{{ showInfoDetail.author }}

知道了