报告题目：Gratings of tethered polyvinyltetrazole on silicon as a visualization platform for sensing of heave ions
报告人：陈建光 教授（台湾科技大学）
时间：2017年6月12日（星期一）15:30
地点：材料科学与工程土耳其里拉兑换人民币25号楼331会议室
报告摘要：
Using click reactions, we have grafted N-propargyl polyacrylonitrile (PAN) to a dot matrix presentingazido-terminated surfaces on a silicon substrate to generate pillar arrays of two-dimensional photoniccrystals (2DPCs). The tethered PAN 2DPCs were then subjected to a cyano-to-tetrazole conversion reactionto generate tethered polyvinyltetrazole (PVT) 2DPCs. Over 88% of the cyano groups on the PAN were converted to tetrazolyl groups, determined according to the change in average molecular weight. Thetetrazolyl groups exhibited optimal Pb2+absorption at pH 5.3. Each Pb2+ ion was chelated to two or four tetrazolyl groups. In addition, the adsorption of Pb2+ to the tetrazolyl groups was highly selectivein solutions also containing Na+, K+, Ca2+, and Mg2+ ions. The absorption of Na+, K+, Ca2+, Mg2+, Fe3+, or Zn2+ ions resulted in insignificant changes in the effective refractive index of the tethered PVT 2DPC;in contrast, absorbing Pb2+ ions led to a dramatic change in effective refractive index, due to the highrefractive index of Pb2+ ions, resulting in a color change from green to dark red, observable to the nakedeye along an incident angle of 50–60?. The tethered PVT 2DPC-based assay exhibited high sensitivity andselectivity in an experimentally simple setup for Pb2+ sensing. The color change of the 2DPC should beapplicable in the development of other diffraction-based sensing technologies.
报告人简介：
陈建光分别于1996年和1998年从台湾清华大学获化学工程学士和硕士学位，之后于2003年从台湾交通大学获博士学位，师从张丰志教授。2004-2005年，他在日本东北大学流体科学研究所，任博士后研究员从事量子点和量子盘的研究。2005年，他加入屏东科技大德赢新版app物系统工程系，任助理教授。2006年8月，他加入台湾科技大学，先后任助理教授、副教授（2010），并于2013年晋升教授。陈教授的研究领域包括：高分子刷合成与应用（在光学和生物传感器）、纳米纤维前瞻制成、纳米粒子、先进显示器材料、磁性粒子应用。他目前已经发表了90余篇的研究论文。
