Poly[n]catenanes: Synthesis of molecular interlocked chains
Abstract
As the macromolecular version of mechanically interlocked molecules, mechanically interlocked polymers are promising candidates for the creation of sophisticated molecular machines and smart soft materials. Poly[n]catenanes, where the molecular chains consist solely of interlocked macrocycles, contain one of the highest concentrations of topological bonds. We report, herein, a synthetic approach toward this distinctive polymer architecture in high yield (similar to 75%) via efficient ring closing of rationally designed metallosupramolecular polymers. Light-scattering, mass spectrometric, and nuclear magnetic resonance characterization of fractionated samples support assignment of the high-molar mass product (number-average molar mass similar to 21.4 kilograms per mole) to a mixture of linear poly[7-26]catenanes, branched poly[13-130]catenanes, and cyclic poly[4-7]catenanes. As a result, increased hydrodynamic radius (in solution) and glass transition temperature (in bulk materials) were observed upon metallation with Zn2+.
- Authors:
-
- Univ. of Chicago, Chicago, IL (United States); Case Western Reserve Univ., Cleveland, OH (United States)
- Univ. of Chicago, Chicago, IL (United States)
- Case Western Reserve Univ., Cleveland, OH (United States)
- Univ. of Chicago, Chicago, IL (United States); Argonne National Lab. (ANL), Lemont, IL (United States)
- Univ. of Chicago, Chicago, IL (United States); Case Western Reserve Univ., Cleveland, OH (United States); Argonne National Lab. (ANL), Lemont, IL (United States)
- Publication Date:
- Research Org.:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- National Science Foundation (NSF); USDOE
- OSTI Identifier:
- 1425221
- Grant/Contract Number:
- AC02-06CH11357
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Science
- Additional Journal Information:
- Journal Volume: 358; Journal Issue: 6369; Journal ID: ISSN 0036-8075
- Publisher:
- AAAS
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Wu, Qiong, Rauscher, Phillip M., Lang, Xiaolong, Wojtecki, Rudy J., de Pablo, Juan J., Hore, Michael J. A., and Rowan, Stuart J. Poly[n]catenanes: Synthesis of molecular interlocked chains. United States: N. p., 2017.
Web. doi:10.1126/science.aap7675.
Wu, Qiong, Rauscher, Phillip M., Lang, Xiaolong, Wojtecki, Rudy J., de Pablo, Juan J., Hore, Michael J. A., & Rowan, Stuart J. Poly[n]catenanes: Synthesis of molecular interlocked chains. United States. doi:10.1126/science.aap7675.
Wu, Qiong, Rauscher, Phillip M., Lang, Xiaolong, Wojtecki, Rudy J., de Pablo, Juan J., Hore, Michael J. A., and Rowan, Stuart J. Fri .
"Poly[n]catenanes: Synthesis of molecular interlocked chains". United States. doi:10.1126/science.aap7675. https://www.osti.gov/servlets/purl/1425221.
@article{osti_1425221,
title = {Poly[n]catenanes: Synthesis of molecular interlocked chains},
author = {Wu, Qiong and Rauscher, Phillip M. and Lang, Xiaolong and Wojtecki, Rudy J. and de Pablo, Juan J. and Hore, Michael J. A. and Rowan, Stuart J.},
abstractNote = {As the macromolecular version of mechanically interlocked molecules, mechanically interlocked polymers are promising candidates for the creation of sophisticated molecular machines and smart soft materials. Poly[n]catenanes, where the molecular chains consist solely of interlocked macrocycles, contain one of the highest concentrations of topological bonds. We report, herein, a synthetic approach toward this distinctive polymer architecture in high yield (similar to 75%) via efficient ring closing of rationally designed metallosupramolecular polymers. Light-scattering, mass spectrometric, and nuclear magnetic resonance characterization of fractionated samples support assignment of the high-molar mass product (number-average molar mass similar to 21.4 kilograms per mole) to a mixture of linear poly[7-26]catenanes, branched poly[13-130]catenanes, and cyclic poly[4-7]catenanes. As a result, increased hydrodynamic radius (in solution) and glass transition temperature (in bulk materials) were observed upon metallation with Zn2+.},
doi = {10.1126/science.aap7675},
journal = {Science},
number = 6369,
volume = 358,
place = {United States},
year = {2017},
month = {12}
}
Web of Science
Figures / Tables:

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journal, February 2018
- McGonigal, Paul R.
- Supramolecular Chemistry, Vol. 30, Issue 9
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- Ng, Antony Wing Hung; Yee, Chi-Chung; Wang, Kai
- Beilstein Journal of Organic Chemistry, Vol. 14
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