材料科学
单层
二氧化钛
可见光谱
生物物理学
纳米点
分子
纳米技术
光化学
光电子学
化学
复合材料
生物
有机化学
作者
Xiaojun Long,Yang Yi,Xiaozhao Wang,Xiyue Duan,Youhong Sun,Chengwei Wu,Wenjian Weng,Boyong Xu,Kui Cheng,Huiming Wang,Jun Lin
出处
期刊:ACS Biomaterials Science & Engineering
[American Chemical Society]
日期:2020-02-26
卷期号:6 (4): 2020-2028
被引量:9
标识
DOI:10.1021/acsbiomaterials.9b01946
摘要
Light-induced cell harvest shows much potential in in vitro cell culture. In this work, a light-responsive monolayer graphene (Gr)/titanium dioxide nanodot (TN) film is designed and used for light-induced cell harvest. It is found that after 20 min of 365 nm UV or 450 nm visible light illumination, different types of cells could be detached from the surface effectively. The highest cell detachment ratio reaches about 95%. The mechanism of such a cell detachment is contributed to light illumination generates charge accumulation, which, in turn, changes the conformation of the extracellular matrix protein molecules adsorbed to a more disordered state, and eventually leads to the cells detachment. Such UV and visible light responsive Gr/TiO2 film could be a good candidate for a surface with light-induced cell detachment property.
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