MRI: Acquisition of Ultrafast Transient Absorption Spectrometer
MRI:购买超快瞬态吸收光谱仪
基本信息
- 批准号:1726536
- 负责人:
- 金额:$ 35万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2017
- 资助国家:美国
- 起止时间:2017-08-01 至 2020-07-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
This award is supported by the Major Research Instrumentation (MRI) and the Chemistry Research Instrumentation (CRIF) Programs. Professor Tianquan Lian from Emory University and colleagues Brian Dyer, Hayk Harutyunyan, Eilaf Egap and Ajit Srivastava have acquired an ultrafast transient absorption spectrometer capable of acting on the femtosecond and nanosecond scales. This instrumentation may aid in studying materials used in the development of sustainable energy which is a "Grand Challenge" for science and technology in the 21st century. To meet this challenge, innovative basic research into new solar energy conversion concepts, materials and technologies is needed. This requires highly multidisciplinary research efforts that span the biological, chemical, physical and computational sciences. The successful development of advanced functional materials requires understanding of fundamental processes involved in the interconversion of light, electrical, and chemical energy in materials, catalysts (enzymes) and at their interfaces. Probing these fundamental processes requires advanced spectroscopic techniques with sufficient time, spectral and spatial resolution and tunability. The requested spectrometers and associated user facility provide this capability and greatly enhance solar energy research and training of postdoctoral fellows and undergraduate and graduate students at Emory and nearby institutions in the metro Atlanta and southeastern USA, including historically black colleges and universities (HBCUs).The spectrometer enhances research and education at all levels. The instrument is used in a variety of investigations such as the examination of the giant oscillator strength transition effects in colloidal, two-dimensional cadmium chalcogenide nanoplatelets of relevance in energy research; studies of exciton dynamics in two-dimensional, transition metal dichalcogenide heterostructures; and the determination of mechanisms of light-driven hydrogen-generating reactions in nanocrystal/hydrogenase hybrid photocatalysis. The spectrometer is also used in investigating the mechanism of triplet Dexter energy transfer in quantum dot/conjugated polymer complexes and in studying the mechanism of plasmon-induced hot electron transfer at a metal/semiconductor interfaces.
该奖项由主要研究仪器(MRI)和化学研究仪器(CRIF)计划支持。来自埃默里大学的Tianquan Lian教授及其同事Brian Dyer,Hayk Harutyunyan,Eilaf Egap和Ajit Srivastava获得了一台能够在飞秒和纳秒尺度上发挥作用的超快瞬态吸收光谱仪。这种仪器可以帮助研究用于可持续能源开发的材料,这是世纪科学和技术的“大挑战”。为了迎接这一挑战,需要对新的太阳能转换概念、材料和技术进行创新性基础研究。这需要高度多学科的研究努力,跨越生物,化学,物理和计算科学。先进功能材料的成功开发需要了解材料,催化剂(酶)及其界面中光,电和化学能相互转换的基本过程。 探测这些基本过程需要先进的光谱技术,具有足够的时间,光谱和空间分辨率和可调性。所要求的光谱仪和相关的用户设施提供了这种能力,并大大提高了太阳能研究和博士后研究员和本科生和研究生在埃默里大学和附近的机构在亚特兰大市和美国东南部,包括历史上的黑人学院和大学(HBCU)的培训。光谱仪加强了各级研究和教育。该仪器被用于各种调查,如检查的巨振子强度过渡的影响,在胶体,二维镉硫属化物纳米片的相关性在能源研究;激子动力学的研究,在二维,过渡金属dichalcogenide异质结构;和光驱动的氢产生反应的机制的确定在氢/氢化酶的混合动力学。该光谱仪还用于研究量子点/共轭聚合物复合物中三重态Dexter能量转移的机制以及研究金属/半导体界面等离子体激元诱导热电子转移的机制。
项目成果
期刊论文数量(13)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Enhanced triplet state generation through radical pair intermediates in BODIPY-quantum dot complexes
- DOI:10.1063/1.5136045
- 发表时间:2019-12-28
- 期刊:
- 影响因子:4.4
- 作者:Jin, Tao;Uhlikova, Natalie;Lian, Tianquan
- 通讯作者:Lian, Tianquan
Effect of Surface Ligand on Charge Separation and Recombination at CsPbI 3 Perovskite Quantum Dot/TiO 2 Interfaces
表面配体对CsPbI 3 钙钛矿量子点/TiO 2 界面电荷分离和复合的影响
- DOI:10.1021/acs.jpcc.9b06725
- 发表时间:2019
- 期刊:
- 影响因子:0
- 作者:Shang, Qiongyi;Piercy, Brandon D.;Losego, Mark D.;Lian, Tianquan
- 通讯作者:Lian, Tianquan
Time-variant metasurfaces enable tunable spectral bands of negative extinction
- DOI:10.1364/optica.6.001441
- 发表时间:2019-11-20
- 期刊:
- 影响因子:10.4
- 作者:Shcherbakov, Maxim R.;Lemasters, Robert;Shvets, Gennady
- 通讯作者:Shvets, Gennady
Synergistic Cascade Carrier Extraction via Dual Interfacial Positioning of Ambipolar Black Phosphorene for High‐Efficiency Perovskite Solar Cells
- DOI:10.1002/adma.202000999
- 发表时间:2020-05
- 期刊:
- 影响因子:29.4
- 作者:Meng Zhang;M. Ye;Wenlong Wang;Chunyuan Ma;Shun Wang;Qiliang Liu;T. Lian;Jinsong Huang;
- 通讯作者:Meng Zhang;M. Ye;Wenlong Wang;Chunyuan Ma;Shun Wang;Qiliang Liu;T. Lian;Jinsong Huang;
Trap state mediated triplet energy transfer from CdSe quantum dots to molecular acceptors
- DOI:10.1063/5.0022061
- 发表时间:2020-08-21
- 期刊:
- 影响因子:4.4
- 作者:Jin, Tao;Lian, Tianquan
- 通讯作者:Lian, Tianquan
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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
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{{ truncateString('Tianquan Lian', 18)}}的其他基金
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
- 批准号:
2305112 - 财政年份:2023
- 资助金额:
$ 35万 - 项目类别:
Standard Grant
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:
$ 35万 - 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:
$ 35万 - 项目类别:
Continuing 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:
$ 35万 - 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:
$ 35万 - 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:
$ 35万 - 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:
$ 35万 - 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:
$ 35万 - 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:
$ 35万 - 项目类别:
Continuing Grant
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