@article { ISI:000389765500044,
	title = {From dots to doughnuts: Two-dimensionally confined deposition of polyelectrolytes on block copolymer templates},
	journal = {Polymer},
	volume = {107},
	year = {2016},
	note = {[["fid":"21943","view_mode":"default","type":"media","attributes":"height":"404","width":"1000","style":"width: 371px; height: 150px;","alt":"48. from dots to doughnuts","title":"48. from dots to doughnuts","class":"media-element file-default"]]},
	month = {DEC 19},
	pages = {406-414},
	publisher = {ELSEVIER SCI LTD},
	type = {Article},
	address = {THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND},
	abstract = {The combination of block copolymer templating with electrostatic self-assembly provides a simple and robust method for creating nano-patterned polyelectrolyte multilayers over large areas. The deposition of the first polyelectrolyte layer provides important insights on the initial stages of multilayer buildup. Here, we focus on two-dimensionally confined {\textquoteleft}{\textquoteleft}dots{\textquoteright}{\textquoteright} patterns afforded by block copolymer films featuring hexagonally-packed cylinders that are oriented normal to the substrate. Rendering the cylinder caps positively charged enables the selective deposition of negatively charged polyelectrolytes on them under salt-free conditions. The initially formed polyelectrolyte nanostructures adopt a toroidal ({\textquoteright}{\textquoteright}doughnut{\textquoteright}{\textquoteright}) shape, which results from retraction of dangling polyelectrolyte segments into the {\textquoteleft}{\textquoteleft}dots{\textquoteright}{\textquoteright} upon drying. With increasing exposure time to the polyelectrolyte solution, the final shape of the deposited polyelectrolyte transitions from a doughnut to a hemisphere. These insights would enable the creation of patterned polyelectrolyte multilayers with increased control over adsorption selectivity of the additional incoming polyelectrolytes. (C) 2016 Elsevier Ltd. All rights reserved.},
	keywords = {Block copolymers, Layer-by-Layer deposition, patterning, polyelectrolytes, Self-assembly},
	issn = {0032-3861},
	doi = {10.1016/j.polymer.2016.07.016},
	author = {Oded, Meirav and Kelly, Stephen T. and Gilles, Mary K. and M{\"u}ller, Axel H. E. and Shenhar, Roy}
}
