Adsorbed behavior of spin-labeled silane coupling agent on colloidal silica studied by electron spin resonance.
Adsorbed behavior of spin-labeled silane coupling agent on colloidal silica studied by electron spin resonance.
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通过电子自旋共振研究自旋标记硅烷偶联剂在胶体二氧化硅上的吸附行为。
DOI：
10.1002/jbm.820210809
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发表时间：
1987
期刊：
影响因子：
--
通讯作者：
T. Asakura
中科院分区：
文献类型：
--
作者：
N. Nishiyama;H. Katsuki;K. Horie;T. Asakura
用自旋标记硅烷偶联剂，用ESR方法研究了硅烷偶联剂在硅胶表面的吸附机理。吸附的硅烷分子的密度被确定为在95%乙醇溶液中每100 A2二氧化硅表面约1.5-2个分子。此外，吸附在胶体二氧化硅表面的自旋标记试剂的ESR信号由两个分量组成：缓慢分量归因于试剂通过氢键形成直接吸附在二氧化硅表面的Si-OH基团上，而快速分量归因于试剂与此类分子相互作用。被吸附的硅烷分子。
The adsorption mechanism of silane coupling agent on the colloidal silica surface is studied with spin-labeled silane coupling agent using ESR method. The density of the adsorbed silane molecules was determined to be approximately 1.5-2 molecules per 100 A2 of the silica surface in 95% ethanol solution. In addition, ESR signal of spin-labeled agent adsorbed on the colloidal silica surface was composed of two components; slow component attributable to the agents adsorbed directly on the Si--OH groups of the silica surface through hydrogen bond formation and rapid one attributable to the agents interacted with such adsorbed silane molecules.