对齐自组装纳米纤维的共价捕获
I-Che Li1, Jeffrey D Hartgerink1
1Departments of Chemistry and Bioengineering, Rice University , 6100 Main Street, Houston, Texas 77005, United States.
Journal of the American Chemical Society
|June 6, 2017
概括
研究人员使用多域和DOPA开发了对齐的纳米纤维束. 这项突破为先进的生物医学应用增强了自我组装的控制.
科学领域:
- 超分子化学
- 生物材料科学
- 纳米技术
背景情况:
- 多域自发组装成用于生物医学的纳米纤维.
- 之前的工作表明可逆组合和药物和细胞输送的实用性.
- 对自组装的控制仅限于无组织的纳米纤维.
研究的目的:
- 将多域组合成平行对齐的纤维束.
- 研究DOPA在控制纤维对齐和稳定的作用.
- 提高自组装纳米纤维的结构完整性和性能.
主要方法:
- 在注射器输送过程中利用剪切力诱导纤维对齐.
- 将氨基酸DOPA (3,4-二基氨酸) 纳入序列.
- 使用扫描电子显微镜和双折测量分析自组结构.
- 通过DOPA氧化诱导共价链接以稳定对齐的束.
主要成果:
- 根据序和剪切应力实现了平行对齐的纳米纤维捆绑.
- 加入DOPA可形成具有显著双断的异构.
- 扫描电子显微镜证实了水凝链中的高度对齐的纳米纤维.
- 通过DOPA氧化增强了对齐束的结构完整性和双断.
结论:
- 多域,特别是DOPA,可以在剪切应力下形成对齐的纳米纤维结构.
- 由DOPA诱导的共价交联提高了这些对齐组件的稳定性和光学性能.
- 这种可控组装为先进的生物材料和生物医学应用提供了新的可能性.
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