Water-Enhanced and Remote Self-Healing Elastomers in Various Harsh Environments

Peng Zhao, Muqing Cao, Cheng Liu, Yiheng Dai, Yizheng Tan, Shaobo Ji, and Huaping Xu ACS Appl. Mater. Interfaces.; 2022, 14, 27413. The development of underwater remote stimulus-responsive self-healing polymer materials for applications in inaccessible and urgent situations is very challenging because water can readily disturb traditional noncovalent bonds and absorb heat, UV light, IR light, and electromagnetic wave energy at the wave band of micrometers and millimeters. Herein, visible-light-responsive diselenide bonds are employed as the healing moieties to produce a water-enhanced and re...
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Engineering Reversible Hydrogels for 3D Cell Culture and Release Using Diselenide Catalyzed Fast Disulfide Formation

Yueying Han, Cheng Liu Huaping Xu and Yi Cao Chin. J. Chem.; 2022, 40, 1578. Hydrogels crosslinked by dynamic covalent bonds can effectively mimic the viscoelastic properties of native extracellular matrix and have been widely explored for 3D cell culture. Disulfide is one of the most common dynamic bonds in biological systems whose for-mation and cleavage are catalyzed by a set of dedicated enzymes. However, in vitroformation of disulfide bonds is a slow process and requires harsh catalysts. Therefore, it is difficult to use disulfide crosslinked hydrogels for cell culture. In thiswork, w...
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Nanotechnology in the Olympic Winter Games and Beyond

Chaowei He, Muqing Cao, Jianbing Liu, Zhuoxin Ge, Ruihao Zhou, and Huaping Xu ACS Nano.; 2022, 16, 4981. Modern Olympics have increasingly benefited from the advancement of materials science. From February 4 to March 13, 2022, the whole world has witnessed spectacular Olympic Winter Games and Winter Paralympic Games held in Beijing, during which nanotechnologies are extensively applied and play indispensable roles in many aspects. Although these nanotechnologies appear in a very small length scale, they have provided tremendous support to all athletes with the pursuit of “faster, higher, s...
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Copper-Selenocysteine Quantum Dots for NIR-II Photothermally Enhanced Chemodynamic Therapy

Luo Zhang, Yiheng Dai, Shuojiong Pan, Yizheng Tan, Chenxing Sun, Muqing Cao and Huaping Xu ACS Appl. Bio Mater.; 2022, 5, 1794. Chemodynamic therapy has been appealing for effective cancer treatment. Particularly, Fenton-like reactions catalyzed by Cu2+-based nanoparticles showed promising prospects. Herein, we fabricated copper-selenocysteine quantum dots (Cu-Sec QDs) with the majority of Cu+ by a facile and robust thermal titration process. No high temperature or pressure is needed for this synthetic route of QDs. The selenocysteine functioned as the reducing agent as well as the stabili...
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Congratulations! PhD student Cheng Liu received ‘Oral Presentation Award’ in the 652th PhD Forum of Tsinghua University on Flexible Electronics Technology

柔性电子器件 清华大学博士论坛 刘诚口头报告奖
The 652th PhD Forum of Tsinghua University on Flexible Electronics Technology is held on December 5th,  our PhD student Cheng Liu gave an oral presentation named 'Dynamic Covalent Polymer Network with Diselenide Bond' and received an Excellence in Oral Presentation Award.
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The 3rd Table Tennis Tournament of Xu’s Group

第十四届乒乓球赛合影
On Dec. 2nd, 2021, the 3rd Table Tennis Tournament of Xu's Group was held in Gas Film Hall, Tsinghua University, with 16 group members joining in. The tournament is divided into two groups, after a fierce competition, Mr. Yiheng Dai and Dr. Luo Zhang advanced to the final round. And finally, Dr. Luo Zhang won the championship of this year's tournament. This tournament provides a good chance for the people who love table tennis to show their style, also, the communication and connection between group members have been strengthened. Keep positive in both exercise, work and life! ...
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