全校師生:
我校定于2017年12月11日舉辦研究生靈犀學術殿堂——張袁健報告會,現將有關事項通知如下:
1.報告會簡介
報告人:張袁健教授
時 間:2017年12月11日(星期一) 上午10:00
地 點:友誼校區 公字樓328
主 題:氮化碳結構調控在分子發光分析中的應用
內容簡介: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.歡迎各學院師生前來聽報告。報告會期間請關閉手機或將手機調至靜音模式。
黨委研究生工作部
材料學院
2017年12月8日
報告人簡介
張袁健,1998年-2007年先后在南京大學強化部和中國科學院長春應用化學研究所學習獲學士和博士學位,2008年-2012年先后在德國馬普膠體界面研究所和日本國立物質材料研究所國際青年科學家中心從事科研任博士后和ICYS Researcher,2012年起受聘于東南大學化學化工學院,任教授、博士生導師。作為項目負責人承擔國家自然科學基金委、日本學術振興會等多項基金項目。
近年來,以分析傳感為導向,利用電化學和光譜等技術對氮化碳聚合物、摻雜碳等富碳功能材料的化學制備、電子結構調控、表面性質改性、分子界面組裝等進行研究,探索了它們在光電轉換、光/電化學催化和基于這些催化效應的疾病相關小分子傳感應用。 已在J. Am. Chem. Soc.等期刊發表SCI論文100余篇,其中影響因子>5的論文50余篇,ESI高被引論文9篇,總SCI引用5000余次,H-index 39)。曾/現任《中國化學快報》(SCI收錄)青年副主任編委、江蘇省化學會青年副主任委員和國際電化學能源與科學研究院青年委員。