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Strauss MJ, Hwang I, Evans AM, Natraj A, Aguilar-Enriquez X, Castano I, Roesner EK, Choi JW, Dichtel WR. Lithium-Conducting Self-Assembled Organic Nanotubes. J Am Chem Soc 2021; 143:17655-17665. [PMID: 34648256 DOI: 10.1021/jacs.1c08058] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Supramolecular polymers are compelling platforms for the design of stimuli-responsive materials with emergent functions. Here, we report the assembly of an amphiphilic nanotube for Li-ion conduction that exhibits high ionic conductivity, mechanical integrity, electrochemical stability, and solution processability. Imine condensation of a pyridine-containing diamine with a triethylene glycol functionalized isophthalaldehyde yields pore-functionalized macrocycles. Atomic force microscopy, scanning electron microscopy, and in solvo X-ray diffraction reveal that macrocycle protonation during their mild synthesis drives assembly into high-aspect ratio (>103) nanotubes with three interior triethylene glycol groups. Electrochemical impedance spectroscopy demonstrates that lithiated nanotubes are efficient Li+ conductors, with an activation energy of 0.42 eV and a peak room temperature conductivity of 3.91 ± 0.38 × 10-5 S cm-1. 7Li NMR and Raman spectroscopy show that lithiation occurs exclusively within the nanotube interior and implicates the glycol groups in facilitating efficient Li+ transduction. Linear sweep voltammetry and galvanostatic lithium plating-stripping tests reveal that this nanotube-based electrolyte is stable over a wide potential range and supports long-term cyclability. These findings demonstrate how the coupling of synthetic design and supramolecular structural control can yield high-performance ionic transporters that are amenable to device-relevant fabrication, as well as the technological potential of chemically designed self-assembled nanotubes.
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Affiliation(s)
- Michael J Strauss
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Insu Hwang
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Austin M Evans
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Anusree Natraj
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | | | - Ioannina Castano
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Emily K Roesner
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Jang Wook Choi
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - William R Dichtel
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
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Zhang HC, Wang JJ. FT-IR Studies of Plasticization of Propylene Carbonate and Ethylene Carbonate in PEO-NaSCN Polymer Electrolytes. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.200800186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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