Ion slippage through Li+-centered G-quadruplex

Seok Kyu Cho, Kyung Min Lee, So Huei Kang, Kihun Jeong, Sun Phil Han, Ji Eun Lee, Seungho Lee, Tae Joo Shin, Ja Hyoung Ryu, Changduk Yang, Sang Kyu Kwak, Sang Young Lee

Research output: Contribution to journalArticlepeer-review


Single-ion conductors have garnered attention in energy storage systems as a promising alternative to currently widespread electrolytes that allow migration of cations and anions. However, ion transport phenomena of most single-ion conductors are affected by strong ion (e.g., Li+)–ion (immobilized anionic domains) interactions and tortuous paths, which pose an obstacle to achieving performance breakthroughs. Here, we present a Li+-centered G-quadruplex (LiGQ) as a class of single-ion conductor based on directional Li+ slippage at the microscopic level. A guanine derivative with liquid crystalline moieties is self-assembled to form a hexagonal ordered columnar structure in the LiGQ, thereby yielding one-dimensional central channels that provide weak ion-dipole interaction and straightforward ionic pathways. The LiGQ exhibits weak Li+ binding energy and low activation energy for ion conduction, verifying its viability as a new electrolyte design.

Original languageEnglish
Article numbereabp8751
JournalScience Advances
Issue number37
Publication statusPublished - 2022 Sept

Bibliographical note

Funding Information:
2D-GIXD and synchrotron WAXD experiments were performed at PLS-II 3C SAXS I, 9A U-SAXS, and 6D UNIST-PAL beamlines of Pohang Accelerator Laboratory in Korea. This study contains the results obtained by using the equipment of UCRF (UNIST Central Research Facilities).This work was supported by the Samsung Research Funding Center of Samsung Electronics project number SRFC-MA1702-04.

Publisher Copyright:
© 2022 The Authors, some rights reserved.

All Science Journal Classification (ASJC) codes

  • General


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