刘小钢教授:Controlling Photon Upconversion in Lanthanide-doped Nanocrystals

报告题目:Controlling Photon Upconversion in Lanthanide-doped Nanocrystals

报告人:Prof. Xiaogang Liu  (刘小钢 教授)  

Department of Chemistry, National University of Singapore  & Senior Scientist of Institute of Materials Research and Engineering, A*STAR

主持人:吴明娒   教授

时间:  2017615 (星期四)下午3:30

地点:丰盛堂芙兰学术中心A403

刘小钢   教授 简介

       刘小钢教授1996年毕业于北京工商大学,获得化学工程学士学位,1999年在美国北卡罗来纳州格林维尔的东卡罗来纳大学获得化学硕士学位,导师是John Sibert(约翰 希伯特)教授,其后他师从位于美国伊利诺伊州埃文斯顿的西北大学 Prof. Chad Mirkin教授,于2004年获得化学博士学位;同年,他在MIT的Prof. Francesco Stellacci(斯泰拉奇)教授课题组获得了博士后位置。2006年就职于新加坡国立大学,获得教职位置。同时,他兼任新加坡科技研究局材料研究与工程研究所的资深科学家。他的研究兴趣包括纳米材料的合成、超分子化学、催化里的表面科学、传感器以及材料在生物医学方面的应用。他以第一作者或通讯联系人的身份在Science、Nature、Nature Materials、Nature Chemistry、Nature Nanotechnology、Nature Phonotics、 Nature Protocols等国际学术刊物上发表论文120余篇。由于他的杰出学术成绩,荣获2016年新加坡总统科学奖【President’s Science Award (Singapore 2016)】。

 欢迎广大师生参加!

 

报     告     摘    要

 Controlling Photon Upconversion in Lanthanide-doped Nanocrystals

 Xiaogang Liu

 Department of Chemistry, National University of Singapore, Singapore 117543 and Institute of Materials Research and Engineering, A*STAR, Singapore 117602

 

 E-mail: chmlx@nus.edu.sg

Abstract: 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.

 

联系我们    |    友情链接    |    内部网