Resolving Triblock Terpolymer Morphologies by Vapor-Phase Infiltration
Name
document.pdf
Description
Accepted version
Size
623 KB
Format
Adobe PDF
Checksum (MD5)
386f5003b9839b5b0adff868e1201268
Author(s)
Lee, Sangho
Subramanian, Ashwanth
Tiwale, Nikhil
Kisslinger, Kim
Mumtaz, Muhammad
Shi, Ling-Ying
Aissou, Karim
Nam, Chang-Yong
Ross, Caroline A
Date Issued
2020
Journal
Chemistry of Materials
Publisher
American Chemical Society (ACS)
Citation
Lee, Sangho, Subramanian, Ashwanth, Tiwale, Nikhil, Kisslinger, Kim, Mumtaz, Muhammad et al. 2020. "Resolving Triblock Terpolymer Morphologies by Vapor-Phase Infiltration." Chemistry of Materials, 32 (12).
Version
Author's final manuscript
Abstract
© 2020 American Chemical Society. The spontaneous formation of well-organized three-dimensional (3D) nanostructures from self-assembled block copolymers (BCPs) holds promise for nanofabrication and lithography. The addition of a third block to BCPs provides access to a plethora of 3D geometries, but it remains difficult to resolve the geometry of such "three-color"structures when there is low contrast between the polymeric components at length scales of a few nanometers. Here, we apply vapor-phase infiltration synthesis to a silicon-containing triblock terpolymer, poly(1,1-dimethyl silacyclobutane-b-styrene-b-lactide) (PDMSB-b-PS-b-PLA or DSL) to distinguish the 3D microdomain morphologies of the two organic blocks, PLA and PS. Selective infiltration of ZnO within the PLA microdomains reveals morphologies consisting of three-color lamellae or lamellae combined with vertically aligned core-shell cylinders, depending on the volume fractions of each block. The infiltration produces ZnO nanoparticles throughout the 260 nm thickness of the DSL film, generating 3D nanocomposites containing ZnO and SiOx. These results provide a strategy for synthesizing multicomponent 3D nanostructures as well as visualizing the phase behavior of multiblock copolymers.
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Terms of Use
Attribution-NonCommercial-ShareAlike 4.0 International
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1021/ACS.CHEMMATER.0C01647
