Surface Nanopatterning Using the Self-Assembly of Linear Polymers on Surfaces after Solvent Evaporation  

作　　者：Emmanouil Glynos Alexandros Chremos Philip J.Camp Vasileios Koutsos 

机构地区：[1]School of Engineering,Institute for Materials and Processes,TheUniversity of Edinburgh,Robert Stevenson Road,Edinburgh EH93FB,UK [2]School of Chemistry,The University of Edinburgh,David Brewster Road,Edinburgh EH93FJ,UK [3]Department of Materials Science and Technology,University of Crete,71003 Heraklion,Greece [4]Section on Quanitative Imaging and Tissue Sciences,Eunice Kennedy Shriver National Institute of Child Health and Human Development,National Institutes of Health,Bethesda,MD 20892,USA

出　　处：《Nanomanufacturing and Metrology》2022年第3期297-309,共13页纳米制造与计量（英文）

基　　金：the EPSRCDTA and the Institute of Materials and Processes,School of Engineering at the University of Edinburgh.

摘　　要：The morphology of linear polybutadiene physisorbed on freshly cleaved mica from a dilute polymer solution is investigated through atomic force microscopy.A fine-structure study shows that the monolayer morphology in air(after rapid solvent evaporation)depends strongly on the molecular weight(Mw)of the linear polymer,the adsorbed amount,and the conformation adopted by the adsorbed polymer chains under good solvent conditions.The dependence of the observed polymer structure on Mw is most significant for samples with high surface density,where the intermolecular interactions among the adsorbed polymers are important.For high surface density,the adsorbed polymers tend to aggregate and minimize unfavorable contacts with air for all of the different Mw samples,leading to an isotropic structural pattern.These structural phenomena with increasing surface density are explained on the basis of the intermolecular interactions of the adsorbed polymers under good solvent conditions,and after the abrupt solvent evaporation corresponding to poor solvent conditions.The experimental observations are further discussed using the results obtained from molecular dynamics simulations of a simple coarse-grained model.

关 键 词：Surface nanopatterning SELF-ASSEMBLY NANOMANUFACTURING 

分 类 号：O63[理学—高分子化学]