High-quality nanomaterials: from single quantum dot to the superstructures
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Speaker: Ou Chen, Assistant Professor, Brown University (USA)
Time: 2015-06-03 16:00
Place: 3# 210, National Synchrotron Radiation Laboratory


Nanocrystal materials are emerging as an important class of tools that are revolutionizing both fundamental science and technological applications due to their many unique properties. In particular, quantum dots nanocrystals have demonstrated their great potential to be applied in a wide variety of applications as a unique emissive material. In my talk, I will first describe my experimental effort for the synthesis and characterization of a new generation of quantum dots nanocrystals. These dots for the first time combine, in one material, all the best performance metrics desired in quantum dot nanomaterials. In the second part of my talk, I will show how we can use colloidal nanocrystals as building blocks to generate higher-order architectures in assemblies. I will use multifunctional supernanoparticles which self-assemble from fluorescent quantum dots and magnetic nanoparticles as a model system to demonstrate the synthesis, superstructure and property characterizations and their potential biological applications. 



Ou Chen, Who is he?
July. 2004 – Aug. 2010 Ph. D. University of Florida
Sep. 2010 – July. 2014 Postdoctoral Associate Massachusetts Institute of Technology(MIT)
Aug. 2014 – April. 2015 Research Scientist Massachusetts Institute of Technology(MIT)
May 2015 to now Assistant Professor Brown University

• Explored a novel approach for the fabrication of high-quality fluorescent quantum dot materials and studied their optical properties at both single dot and ensemble levels.
• Developed novel core-shell structured magneto-fluorescent assembled supernanoparticles for biological applications as a multifunctional in vitro and in vivo probe.
• Studied the effect of aspect ratios on the biological transport process and delivery in tumor microenvironment.
• Designed and synthesized a size series of biocompatible fluorescence quantum dot based nanoparticles for in vivo studying the size-dependent properties of particle distributions in solid tumors.

Organizer: National Synchrotron Radiation Laboratory
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