报告题目:稀土掺杂上转换纳米颗粒合成及生物应用(新加坡国立刘小刚博士)
报告时间:2017年6月16日(周五) 上午10:00
报告地点:光电工程学院 南区1212会议室
报告摘要:
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 also 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. By incorporating a set of lanthanide ions at defined concentrations into different layers of a core-shell structure, we have expanded the emission spectra of the particles to cover almost the entire visible region, a feat barely accessible by conventional bulk phosphors. In this talk, I will highlight recent advances in the broad utility of upconversion nanocrystals for multimodal imaging, bio-detection, display and photonics.
报告人简介:
刘小刚博士分别在美国东卡罗拉大学、美国西北大学获得硕士和博士学位,并在麻省理工学院(MIT)进行了为期两年的博士后研究,2006年应聘到新加坡国立大学(NUS)担任助理教授。分别在Science、Nature、Nature Nanotech、Nature Materials、Nature Communications、J. Am. Chem. Soc、Angew. Chem.、Adv. Mater.、Chemistry- Eur. J.等高水平学术期刊以第一作者或通讯作者发表论文100多篇,论文被引用17400余次,H指数达到59。