Swelling-Induced 3D Photopatterning on a Diselenide-Containing Elastomer

Fuqiang Fan, Cheng Liu, Sha Wang, Jinqiu Lv, Wenze Li, Yu Fu, Huaping Xu J. Mater. Chem. C, 2019, DOI: 10.1039/C9TC03536B An ordered pattern or a distinct texture on surfaces endows materials with specific applications, such as oil-water separation, advanced anticounterfeiting and optical devices. Conventional photolithography and surface patterning methods can form only 2D patterns, and they are also limited by the shape of a material and the required equipment. In this study, a swelling-induced 3D photopatterning (SPP) method is demonstrated to manipulate both the shape and surface patte...
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Recent Progress in the Biological Applications of Reactive Oxygen Species-Responsive Polymers

Zhiyuan Fan, Huaping Xu Polym. Rev., 2019, DOI: 10.1080/15583724.2019.1641515 Responsive polymeric materials that are sensitive to biological stimuli including temperature, pH, enzymes, or redox conditions have attracted research interest in recent years. Among these, reactive oxygen species (ROS)-responsive polymers are particularly appealing because of the special role of ROS in living organisms. ROS are the indicator and cause of certain diseases, and they are also important signaling molecules. ROS-responsive polymers could possess the following functions: drug carriers, ROS probes, ...
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Congratulations to Ms. Lu Wang, Mr. Tianyu Li, Mr. Wentian Xiang and Mr. Ke Zheng on their graduation

毕业合照
Congratulations to Ms. Lu Wang and Mr. Tianyu Li on getting their PhD degrees! Congtatulations to Mr. Wentian Xiang on getting his master degree! Congratulations to Mr. Ke Zheng on getting his bachelor degree! Mr. Tianyu Li was honoured with "Outstanding PhD Thesis of Tsinghua University". Mr. Ke Zheng was honoured with "T. P. Hou AWARD", "Outstanding Bachelor Thesis of Tsinghua University" and "Outstanding Graduate Student of Beijing".
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Visible-light-induced Metathesis Reaction Between Diselenide and Ditelluride

Cheng Liu, Jiahao Xia, Shaobo Ji, Zhiyuan Fan and Huaping Xu Chem. Commun., 2019, 55, 2813 - 2816. The Se–Te bond was prepared by a metathesis reaction between diselenides and ditellurides, which could be manipulated with the presence or absence of visible light. Additionally, the apparent activation energy of the exchange process was measured to be only 28.01 kJ mol-1, explaining the high reactivity and sensitivity to light.
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Gamma radiation responsive side-chain tellurium-containing polymer for cancer therapy

Fuqiang Fan, Shiqian Gao, Shaobo Ji, Yu Fu, Pengpeng Zhang and Huaping Xu  Mater. Chem. Front., 2018, 2, 2109-2115 The combination of chemotherapy and radiotherapy could not only enhances cancer treatment efficacy, but also shortens the period of the overall treatment and relieves the negative emotions of the patients during the remedy. Here, we presented a novel strategy for coordinating the chemotherapy drug CDDP with a tellurium-containing polymer, which restrained the tumour cytotoxicity of these two portions. After low dose γ-radiation, CDDP departed from the coordination complexes, and...
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Visible Light-Induced Plasticity of Shape Memory Polymers

Shaobo Ji, Fuqiang Fan, Chenxing Sun, Ying Yu and Huaping Xu ACS Appl. Mater. Interfaces, 2017, 9, 33169-33175 Plasticity of thermoset polymers has been realized by introducing exchangeable bonds, and the plasticity is mostly triggered via heat or UV light. Visible light is a relatively mild trigger that has not been used to induce plasticity in polymer materials. Herein, thermoset polyurethanes (PUs) containing diselenide bonds are fabricated that possess visible light-induced plasticity along with shape memory behavior. A series of PUs with different diselenide bond contents were teste...
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Multi-hierarchical Responsive Polymers: Stepwise Oxidation of a Selenium- and Tellurium-Containing Block Copolymer with Sensitivity to both Chemical and Electrochemical Stimuli

Lu Wang, Wencong Wang, Wei Cao and Huaping Xu Polym. Chem., 2017, 8, 4520–4527 Nanomaterials with hierarchical responsiveness are of great significance for not only fundamental science but also future biomedical applications due to sophisticated and hierarchical physiological environments. Here, we report a selenium- and tellurium-containing block copolymer that can be stepwise oxidized by both chemical methods and electrochemical methods. Differences in sensitivity to the oxidation of selenium and tellurium were employed. By tuning the concentration of the oxidant and ...
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Selenium-functionalized Graphene Oxide that Can Modulate the Balance of Reactive Oxygen Species

Jiahao Xia, Feng Li, Shaobo Ji and Huaping Xu ACS Appl. Mater. Interfaces, 2017, 9, 21413−21421 Graphene oxide (GO) is an important two-dimensional material since it is water soluble and can be functionalized to adapt to different applications. However, the current covalent functionalization methods usually require hash conditions, long duration and sometimes even multi-steps, while noncovalent functionalization is inevitably unstable, especially under physiological environment where competing species exist. Diselenide bond is a dynamic covalent bond and can respond t...
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