Abstract
Crosslinked colloidal monolayers are promising as templates, lithographic masks, filtration membranes, or membranes for controlled release rates in drug delivery. We demonstrate assembly of monodisperse micron-sized polystyrene (PS) beads at an air/water interface, which are transformed into crystalline monolayers using addition of surface-active agents. Vapor annealing methods with solvents (toluene and xylene) and crosslinking agents (divinylbenzene) were investigated regarding their ability to crosslink these floating monolayers directly at the interface, generating crosslinked membranes with crystal size up to 44 cm2, domain size up to 1.9 mm2, and nano-sized pores (100–300 nm). The demonstrated fabrication method emphasizes short fabrication time using a simple setup.Graphical abstract
Highlights
Crosslinked colloidal monolayers are promising as templates, lithographic masks, filtration membranes, or membranes for controlled release rates in drug delivery
We demonstrate assembly of monodisperse micron-sized polystyrene (PS) beads at an air/water interface, which are transformed into crystalline monolayers using addition of surface-active agents
Crystalline, colloidal monolayers have been shown to be highly useful for nanolithography [1,2,3,4], structural color painting [5], or as templates for fabrication of porous materials [6,7,8]
Summary
Crosslinked colloidal monolayers are promising as templates, lithographic masks, filtration membranes, or membranes for controlled release rates in drug delivery. Crystalline, colloidal monolayers have been shown to be highly useful for nanolithography [1,2,3,4], structural color painting [5], or as templates for fabrication of porous materials [6,7,8]. With static [16] and dynamic vapor swelling methods [2] (exposure time: 5–20 min), monolayer films with pore diameters of 150 down to 100 nm and 140 down to 47 nm could be fabricated. We investigate the static and dynamic vapor swelling of floating monolayers of self-assembled PS beads to fabricate colloidal masks with nano-sized pores with an emphasis on simple setup and short fabrication times
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
