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aThe two narrow resonances at d values of 295 and 2102 ppm are consistent with Si–O bonding on the surface of the nanoparticles. 二狭窄的共鸣在295和2102 ppm D价值与SiO接合是一致的在nanoparticles的表面。[translate] abut we split almost one year ago 正在翻译,请等待... ...
The 5-OH group undergoes strong hydrogen bonding with the adjacent oxo group, which is conjugated to an aromatic ring and acts as a free electron donor to form a hydrogen bond with the 5-OH group. The 20-OH and 7-OH groups show the same properties, however the 7-OH group shows ...