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开发低温可激活的阿里尔化粘附促进剂,作为多功能表面修饰剂

Alexandros A Atzemoglou^1,2, Niccolò Bartalucci¹, Felix Donat³

¹SuSoS AG, Lagerstrasse 14, Dübendorf 8600, Switzerland.

ACS applied engineering materials

|May 1, 2025

概括

研究人员开发了新的粘附促进剂,使用替代的酸进行温和的表面修饰. 这些化合物能够在100°C以下的温度下实现稳定的化学桥梁,克服了现有的固定聚合物薄膜方法的局限性.

科学领域:

材料科学材料科学材料科学
有机化学有机化学
表面化学表面化学

背景情况:

粘附促进剂为永久的表面修饰创造化学桥梁.
使用 perfluoro-aryl azides 的现有方法需要高温 (>100 °C) 或是光分解不可行的.
需要在较低温度下激活的粘附促进剂,以实现更广泛的材料兼容性.

研究的目的:

设计和合成具有可调节的,较低的激活温度的新型酸.
为了在温和条件下使缺乏活性组的聚合物能够对表面进行共价附着.
为了证明这些新的粘附促进剂在表面功能化方面的有效性.

主要方法:

使用密度函数理论 (DFT) 预测激活温度的计算建模.
三个替代的阿里亚化物分子的合成.
热激活温度和C-H插入反应的实验验证.
将合成的分子纳入聚合物骨干,以创建粘附促进剂.
表面功能化使用聚烯 (PVP) 薄膜.
使用光谱圆测量 (ELM) 和X射线光电子光谱 (XPS) 进行表征.

主要成果:

替代剂的变化有效调整了亚酸的激活温度在100°C以下.
用二化物替代的p-phenoxy azide通过C-H插入在70°C左右表现出反应性.
合成的粘附促进剂促进了PVP薄膜对基板的共价附着.
在温和的热激活条件下确认了PVP膜的成功固定.

结论:

新型酸为低温表面功能化提供了一条途径.
开发的粘附促进剂使得聚合物能够对各种表面进行强大的共价粘附.
这种方法扩大了粘附促进剂对敏感材料和应用的实用性,包括医疗器械.

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