Jinnan Xuan1,Zhiqiang Wang1,Yuyan Chen2,Dujuan Liang3,Liang Cheng2*（程亮）, Xiaojing Yang3,Zhuang Liu2, Renzhi Ma, Takayoshi Sasaki, and Fengxia Geng1*（耿凤霞）
1College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, China
2Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, Suzhou, China
3College of Chemistry, Beijing Normal University, Beijing, China
4International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Ibaraki, Japan
Angew. Chem. Int. Ed.2016, 55, 14569 –14574
The delamination of titanium carbide sheets, an intriguing class of two-dimensional materials, has been critically dependent on the extraction of interlayer Al in acidic media, such as concentrated hydrofluoric acid (HF) or a mixture of hydrochloric acid (HCl) and a fluoride salt. Herein, we report an organic-base-driven intercalation and delamination of titanium carbide that takes advantage of the amphoteric nature of interlayer Al. The resulting aluminum-oxoanion-functionalized titanium carbide sheets manifested unusually strong optical absorption in the near-infrared (NIR) region with a mass extinction coefficient as high as 29.1Lg−1cm−1at 808nm. Thus, the performance of this material is comparable or even superior to that of state-of-the-art photoabsorption materials, including gold-based nanostructures, carbon-based materials, and transition-metal dichalcogenides. Preliminary studies show that the titanium carbide sheets serve as efficient photothermal agents against tumor cells.
链接：http://onlinelibrary.wiley.com/doi/10.1002/anie.201606643/abstract;jsessionid=1C9041278442021C8D24E71733E0A9F0.f04t02
