Host-Guest Self-assembly in Block Copolymer Blends

Park, Woon Ik; Kim, YongJoo; Jeong, Jae Won; Kim, Kyungho; Yoo, Jung-Keun; Hur, Yoon Hyung; Kim, Jong Min; Thomas, Edwin L.; Alexander-Katz, Alfredo; Jung, Yeon Sik

doi:10.1038/srep03190

Host-Guest Self-assembly in Block Copolymer Blends

Journal Article · Tue Nov 12 00:00:00 EST 2013 · Scientific Reports

DOI:https://doi.org/10.1038/srep03190· OSTI ID:1624669

Park, Woon Ik ^[1]; Kim, YongJoo ^[2]; Jeong, Jae Won ^[3]; Kim, Kyungho ^[3]; Yoo, Jung-Keun ^[3]; Hur, Yoon Hyung ^[3]; Kim, Jong Min ^[3]; Thomas, Edwin L. ^[4]; Alexander-Katz, Alfredo ^[2]; Jung, Yeon Sik ^[3]

Korea Advanced Inst. Science and Technology (KAIST), Daejeon (Korea, Republic of). Dept. of Materials Science and Engineering; DOE/OSTI
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Dept. of Materials Science and Engineering
Korea Advanced Inst. Science and Technology (KAIST), Daejeon (Korea, Republic of). Dept. of Materials Science and Engineering
Rice Univ., Houston, TX (United States). Dept. of Mechanical Engineering and Materials Science

Ultrafine, uniform nanostructures with excellent functionalities can be formed by self-assembly of block copolymer (BCP) thin films. However, extension of their geometric variability is not straightforward due to their limited thin film morphologies. Here, we report that unusual and spontaneous positioning between host and guest BCP microdomains, even in the absence of H-bond linkages, can create hybridized morphologies that cannot be formed from a neat BCP. Our self-consistent field theory (SCFT) simulation results theoretically support that the precise registration of a spherical BCP microdomain (guest, B-b-C) at the center of a perforated lamellar BCP nanostructure (host, A-b-B) can energetically stabilize the blended morphology. As an exemplary application of the hybrid nanotemplate, a nanoring-type Ge2Sb2Te5 (GST) phase-change memory device with an extremely low switching current is demonstrated. These results suggest the possibility of a new pathway to construct more diverse and complex nanostructures using controlled blending of various BCPs.

View Accepted Manuscript (DOE)

Research Organization:: Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: SC0001088

OSTI ID:: 1624669

Journal Information:: Scientific Reports, Journal Name: Scientific Reports Journal Issue: 1 Vol. 3; ISSN 2045-2322

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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