Vapor deposition of a nonmesogen prepares highly structured organic glasses
Abstract
We show that glasses with aligned smectic liquid crystal-like order can be produced by physical vapor deposition of a molecule without any equilibrium liquid crystal phases. Smectic-like order in vapor-deposited films was characterized by wide-angle X-ray scattering. A surface equilibration mechanism predicts the highly smectic-like vapor-deposited structure to be a result of significant vertical anchoring at the surface of the equilibrium liquid, and near-edge X-ray absorption fine structure (NEXAFS) spectroscopy orientation analysis confirms this prediction. Understanding of the mechanism enables informed engineering of different levels of smectic order in vapor-deposited glasses to suit various applications. The preparation of a glass with orientational and translational order from a nonliquid crystal opens up an exciting paradigm for accessing extreme anisotropy in glassy solids.
- Publication Date:
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- OSTI Identifier:
- 1566219
- Grant/Contract Number:
- AC02-76SF00515
- Resource Type:
- Published Article
- Journal Name:
- Proceedings of the National Academy of Sciences of the United States of America
- Additional Journal Information:
- Journal Name: Proceedings of the National Academy of Sciences of the United States of America Journal Volume: 116 Journal Issue: 43; Journal ID: ISSN 0027-8424
- Publisher:
- Proceedings of the National Academy of Sciences
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Bishop, Camille, Thelen, Jacob L., Gann, Eliot, Toney, Michael F., Yu, Lian, DeLongchamp, Dean M., and Ediger, M. D. Vapor deposition of a nonmesogen prepares highly structured organic glasses. United States: N. p., 2019.
Web. doi:10.1073/pnas.1908445116.
Bishop, Camille, Thelen, Jacob L., Gann, Eliot, Toney, Michael F., Yu, Lian, DeLongchamp, Dean M., & Ediger, M. D. Vapor deposition of a nonmesogen prepares highly structured organic glasses. United States. doi:10.1073/pnas.1908445116.
Bishop, Camille, Thelen, Jacob L., Gann, Eliot, Toney, Michael F., Yu, Lian, DeLongchamp, Dean M., and Ediger, M. D. Mon .
"Vapor deposition of a nonmesogen prepares highly structured organic glasses". United States. doi:10.1073/pnas.1908445116.
@article{osti_1566219,
title = {Vapor deposition of a nonmesogen prepares highly structured organic glasses},
author = {Bishop, Camille and Thelen, Jacob L. and Gann, Eliot and Toney, Michael F. and Yu, Lian and DeLongchamp, Dean M. and Ediger, M. D.},
abstractNote = {We show that glasses with aligned smectic liquid crystal-like order can be produced by physical vapor deposition of a molecule without any equilibrium liquid crystal phases. Smectic-like order in vapor-deposited films was characterized by wide-angle X-ray scattering. A surface equilibration mechanism predicts the highly smectic-like vapor-deposited structure to be a result of significant vertical anchoring at the surface of the equilibrium liquid, and near-edge X-ray absorption fine structure (NEXAFS) spectroscopy orientation analysis confirms this prediction. Understanding of the mechanism enables informed engineering of different levels of smectic order in vapor-deposited glasses to suit various applications. The preparation of a glass with orientational and translational order from a nonliquid crystal opens up an exciting paradigm for accessing extreme anisotropy in glassy solids.},
doi = {10.1073/pnas.1908445116},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
number = 43,
volume = 116,
place = {United States},
year = {2019},
month = {9}
}
DOI: 10.1073/pnas.1908445116
Search WorldCat to find libraries that may hold this journalWorks referenced in this record:
Substrate temperature controls molecular orientation in two-component vapor-deposited glasses
journal, January 2016
- Jiang, J.; Walters, D. M.; Zhou, D.
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Influence of Molecular Shape on the Thermal Stability and Molecular Orientation of Vapor-Deposited Organic Semiconductors
journal, July 2017
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