title: Dissipative particle dynamics simulation of quaternary bolaamphiphiles: multi-colour tiling in hexagonal columnar phases.
abstract: We use dissipative particle dynamics simulations to examine the phase behaviour of X-shaped quaternary bolaamphiphiles. These molecules are composed of a rod-shaped core, with polar groups at each end and two different lateral chains. We show that, as for ternary bolaamphiphiles, square and hexagonal columnar phases are observed. The micro-phase segregation in the four-block systems leads to neighbouring columns containing different types of chain. For a square columnar phase, this does not present a problem. For hexagonal systems, however, this necessarily leads to frustration, and we discuss how the molecular structure can influence the way this frustration is relieved.
authors.affiliation: Department of Chemistry, University of York, York, UK YO10 5DD. mb530@york.ac.uk
authors.forename: Martin A
authors.initials: MA
authors.lastname: Bates
authors.forename: Martin
authors.initials: M
authors.lastname: Walker