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Direct Imaging of Single Plasmonic Metal Nanoparticles in Capillary with Laser Light-Sheet Scattering Imaging

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成果类型:
期刊论文
作者:
Cao, Xuan;Feng, Jingjing;Pan, Qi;Xiong, Bin;He, Yan;Yeung, Edward S.
通讯作者:
Yan He
作者机构:
State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Hunan University, Changsha, Hunan 410082, P. R. China<&wdkj&>Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China<&wdkj&>Institute of Pharmacy and Pharmacology, University of South China, Hengyang, Hunan 421001, P. R. China<&wdkj&>Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
[Pan, Qi; He, Yan; Feng, Jingjing] Department of Chemistry, Tsinghua University , Beijing, 100084, P. R. China
[Xiong, Bin; He, Yan; Cao, Xuan] State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Hunan University , Changsha, Hunan 410082, P. R. China
[Yeung, Edward S.] Department of Chemistry, Iowa State University , Ames, Iowa 50011, United States
[Cao, Xuan] Institute of Pharmacy and Pharmacology, University of South China , Hengyang, Hunan 421001, P. R. China
通讯机构:
[He, Yan] Hunan Univ, Coll Chem & Chem Engn, Coll Biol, State Key Lab Chemobiosensing & Chemometr, Changsha 410082, Hunan, Peoples R China.
[He, Yan] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China.
State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Hunan University, Changsha, Hunan, China
语种:
英文
关键词:
Basic and applied research - Heterogeneous distributions - High through-put characterization - Microscopic characterization - Physical and chemical properties - Plasmonic nanoparticle - Scattering microscopies - Spectroscopic measurements
期刊:
Analytical Chemistry
ISSN:
0003-2700
年:
2017
卷:
89
期:
5
页码:
2692-2697
基金类别:
National Natural Science Foundation of China [91027037, 21127009, 21425519, 21221003]; Natural Science Foundation of Hunan Province [13JJ1015]; Hunan University; Tsinghua University
机构署名:
本校为其他机构
院系归属:
药学与生物科学学院
摘要:
Understanding the heterogeneous distribution of the physical and chemical properties of plasmonic metal nanoparticles is fundamentally important to their basic and applied research. Traditionally, they are obtained either indirectly via bulk spectroscopic measurements plus electron microscopic characterizations or through single molecule/particle imaging of nanoparticles immobilized on planar substrates. In this study, by using light-sheet scattering microscopy with a supercontinuum white laser, highly sensitive imaging of individual metal nanoparticles (MNPs) flowing inside a capillary, driven by either pressure or electric field, was achieved for the first time. We demonstrate that single plasmonic nanoparticles with different size or chemical modification could be differentiated through their electrophoretic mobility in a few minutes. This technique could potentially be applied to high throughput characterization and evaluation of single metal nanoparticles as well as their dynamic interactions with various local environments.

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