Golovko Dmytro S, Muñoz-Espí Rafael, Wegner Gerhard
Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany.
Langmuir. 2007 Mar 27;23(7):3566-9. doi: 10.1021/la0632880. Epub 2007 Feb 22.
Latex particles with an average diameter of 70 nm, functionalized at the surface with carboxylic groups, are chemically coated by layer-by-layer deposition onto a spherical probe attached on an atomic force microscope cantilever. The forces between poly(styrene-acrylic acid) latex nanoparticles and differently terminated zinc oxide surfaces are studied by a homemade atomic force microscope based apparatus. The results confirmed a preferred adhesion of the latex particles to zinc-terminated ZnO faces, 0001, compared to oxygen-terminated and apolar faces. The method proposed allows the measurement of the interaction between nanometric particles and planar surfaces, which may be of interest for different applications in surface and colloid sciences.
平均直径为70纳米、表面用羧基官能化的乳胶颗粒，通过逐层沉积化学包覆在附着于原子力显微镜悬臂上的球形探针上。利用一种基于自制原子力显微镜的装置，研究了聚（苯乙烯-丙烯酸）乳胶纳米颗粒与不同端基的氧化锌表面之间的力。结果证实，与氧端基表面和非极性表面相比，乳胶颗粒更倾向于附着在锌端基的ZnO面（0001）上。所提出的方法能够测量纳米颗粒与平面表面之间的相互作用，这对于表面和胶体科学中的不同应用可能具有重要意义。
