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【学术报告】研究生灵犀学术殿堂第261期之张袁健报告会通知
2017-12-11 11:28   党委研究生工作部 材料学院 审核人:   (点击: )

全校师生:

我校定于2017年12月11日举办研究生灵犀学术殿堂——张袁健报告会,现将有关事项通知如下:

1.报告会简介

报告人:张袁健教授

时 间:2017年12月11日(星期一) 上午10:00

地 点:友谊校区 公字楼328

主 题:氮化碳结构调控在分子发光分析中的应用

内容简介:Chemical structures of two-dimensional (2D) nanosheet can effectively control the properties thus guiding their applications. However, carbon nitride nanosheets (CNNS) with tunable chemical structures and sizes had been rarely explored, thus impeding the boost of performances. Herein, we demonstrate that CNNS with tunable chemical structures can be obtained by liquid-exfoliation of facile accessible bulk carbon nitride with different polymerization degree. In comparison with previous methods, the proposed route was green, not requiring any additives, toxic solvents or preintercalation steps. Interestingly, the ECL of as-prepared CNNS was significantly modulated, and exhibited unusual changes in quenching and enhancement upon adding different metal-ions. Such advantage was further applied to construct sensors for multiple metal-ions without any labeling and masking reagents. The detection limit estimated at a signal-to-noise of 3, of Cu2+, Ni2+, and Cd2+ were 250 nM, 1 nM and 20 nM, respectively, which was 2~340 times lower than the maximum level in drinking water permitted by WHO. It was further revealed that the strong ECL quenching effect was due to the inner filter effect/electron transfer process and the enhancement was due to the catalytic effect. It would open a vista to explore 2D carbon-rich materials for a wide range of applications such as sensing with enhanced performances based on new mechanism.

2.欢迎各学院师生前来听报告。报告会期间请关闭手机或将手机调至静音模式。

党委研究生工作部

材料学院

2017年12月8日

报告人简介

张袁健,1998年-2007年先后在南京大学强化部和中国科学院长春应用化学研究所学习获学士和博士学位,2008年-2012年先后在德国马普胶体界面研究所和日本国立物质材料研究所国际青年科学家中心从事科研任博士后和ICYS Researcher,2012年起受聘于东南大学化学化工学院,任教授、博士生导师。作为项目负责人承担国家自然科学基金委、日本学术振兴会等多项基金项目。

近年来,以分析传感为导向,利用电化学和光谱等技术对氮化碳聚合物、掺杂碳等富碳功能材料的化学制备、电子结构调控、表面性质改性、分子界面组装等进行研究,探索了它们在光电转换、光/电化学催化和基于这些催化效应的疾病相关小分子传感应用。 已在J. Am. Chem. Soc.等期刊发表SCI论文100余篇,其中影响因子>5的论文50余篇,ESI高被引论文9篇,总SCI引用5000余次,H-index 39)。曾/现任《中国化学快报》(SCI收录)青年副主任编委、江苏省化学会青年副主任委员和国际电化学能源与科学研究院青年委员。

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