Department of Physics and Astronomy, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3112, USA.
Langmuir. 2010 May 18;26(10):7126-32. doi: 10.1021/la904177p.
Liquid films of different silicate esters were deposited from volatile solvents on hydroxylated and hydrogen-passivated silicon surfaces. We show that adsorption of silicate ester molecules and the resulting structural morphology of the liquid films not only are determined by attractive van der Waals forces with contributions from electrostatic interactions between the silicone ester moieties and oxide surface sites but also can be tuned by modifying the substrate surface or by changing the liquid-solvent interactions. Our results also show the importance of the conformational properties of liquid molecules and their rearrangements at the liquid/solid interface for controlled solvent-assisted film deposition.
不同硅酸酯的液体薄膜从挥发性溶剂在羟基化和氢化硅表面上沉积。我们表明，硅酸酯分子的吸附和由此产生的液体薄膜的结构形态不仅由硅胶酯部分与氧化物表面位点之间的静电相互作用的吸引力范德华力决定，而且还可以通过修饰基底表面或通过改变液体-溶剂相互作用来调节。我们的结果还表明，液体分子的构象性质及其在液体/固体界面处的重排对于控制溶剂辅助的薄膜沉积非常重要。
