在表面上有共连接的糖化物
Louis C P M de Smet1, Gerrit A Stork, Geert H F Hurenkamp
1Laboratory of Organic Chemistry, Wageningen University, Dreijenplein 8, 6703 HB Wageningen, The Netherlands.
Journal of the American Chemical Society
|November 13, 2003
概括
研究人员开发了新的方法,将含有糖的单层附着在表面上. 一种温和的光化学技术可以为潜在的生物应用保存脆弱的糖.
科学领域:
- 材料科学 材料科学 材料科学
- 表面化学 表面化学
- 生物技术是生物技术.
背景情况:
- 表面在电子和生物传感器中至关重要.
- 对有机分子与进行共价性附着是具有挑战性的.
- 糖功能化是生物分子识别的关键.
研究的目的:
- 开发和比较制造糖功能化表面的方法.
- 为了研究表面附着后的糖类的完整性.
- 为了评估附着的糖分对生物相互作用的可访问性.
主要方法:
- 使用热 (反流) 和光化学方法对表面的功能化.
- 使用富里埃变换红外光谱法 (FT-IR) 进行附着单层的表征.
- 单层的高分辨率元素深度分析,使用具有2D探测器的角度分辨率X射线光电子光谱学 (ARXPS).
主要成果:
- 含糖胺单层的表面的成功共价附着.
- 光化学方法比较温和,可以保存脆弱的糖类,如酸.
- ARXPS实现了亚纳米分辨率,揭示了薄单层的基本深度概况 (大约为1. 1.5 纳米) 的时间.
- 证实酸存在于单层的表面,表明存在相互作用的可能性.
结论:
- 热和光化学方法都使的糖化功能化成为可能.
- 光化学方法提供了一种优越的,温和的方法来保护生物分子的完整性.
- 开发的ARXPS技术为分析表面上的超薄有机层提供了前所未有的分辨率.
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