报告题目：Controlling Photon Upconversion in Nanocrystals
报 告 人：Prof. Xiao Gang Liu (新加坡国立大学)
Lanthanide-doped nanoparticles exhibit unique luminescent properties, including a large Stokes shift, a sharp bandwidth of emission, high resistance to optical blinking, and photobleaching. Uniquely, they can convert long-wavelength stimulation into short-wavelength emission. These attributes offer the opportunity to develop alternative luminescent labels to organic fluorophores and quantum dots. In recent years, researchers have taken advantage of spectral-conversion nanocrystals in many important biological applications, such as highly sensitive molecular detection and autofluorescence-free cell imaging. With significant progress made over the past several years, we can now design and fabricate nanoparticles that display tailorable optical properties. In particular, we can generate a wealth of color output under single-wavelength excitation by rational control of different combinations of dopants and dopant concentration. In this talk, I will highlight the current advances in functionalization strategies that impart the broad utility of upconversion nanocrystals for multimodal imaging, biodetection, cancer therapy, energy management, displays and photonics.
个人简历：Xiaogang Liu is associate professor of chemistry, Department of Chemistry, NUS. He received B.Eng. in Beijing Technology and Business University (1996), M.S. in East Carolina University (1999), and Ph.D. in Northwestern University (2004). 2004-2006, he worked as a Postdoctoral Fellow, Department of Materials Science and Engineering, Massachusetts Institute of Technology (MIT). He received many awards, including 41st International Conference on Coordination Chemistry Rising Stars Lectureship Award (2014), 15th Asian Chemical Congress Asian Rising Stars Lectureship Award (2013), Department of Chemistry Outstanding Chemist Award (2012), Chemical Society Reviews Emerging Investigator Lectureship Award (2012), University Young Researcher Award (2011), BASF‐SNIC Award in Materials Chemistry (2011), et al. He also serves as Associate Editor of Nanoscale, Science Bulletin, Journal of Luminescence, Editorial Board of COSMOS, Chemistry–An Asian Journal, and Book series editor of RSC Nanoscience and Nanotechnology. He has published more 100 papers in Science, Nature, Nature Photonics, Nature Nanotechnology, Nature Materials, Nature Protocols, Chem. Soc. Rev., Acc. Chem. Res., JACS, Angew. Chem., et al. His research interesting includes supermolecular coordination chemistry, catalysis, nanomaterials synthesis and nanostructure patterning, chemical sensors and biosensors, nanophotonics, scanning probe microscopes. More Details at: http://liuxg.science.nus.edu.sg/