Dimensional Control of Highly Anisotropic and Transparent Conductive Coordination Polymers for Solution-Processable Large-Scale 2D Sheets

Bong Lim Suh, Goun Kang, Sun Mi Yoon, Sanghyun Cho, Myoung Woon Moon, Yun Mo Sung, Min Seok Kim, Kahyun Hur

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Controlling the dimensional aspect of conductive coordination polymers is currently a key scientific interest. Herein, solution-based dimension control strategies are proposed for copper chloride thiourea (CuCl-TU) coordination polymers that enable centimeter-scale, 2D nanosheet formation for use as transparent electrodes. Despite the wide bandgap of CuCl-TU polymers (4.33 eV), through polaron-mediated electron transfer, the electrical conductivity of the 2D sheet at room temperature is able to reach 4.45 S cm−1 without intentional doping. This leads to a highly anisotropic electronic conductivity of up to the order of ≈103 differences, depending on the material orientation. Furthermore, by substituting alternative thiourea candidates, it is demonstrated that it is possible to predesign CuCl-TU structures with the desired functionality, stability, and porosity through dimensional control. These findings provide a blueprint to design next-generation transparent conducting materials that can operate at room temperature, thereby expanding their applicability to different fields.

Original languageEnglish
Article number2206980
JournalAdvanced Materials
Volume35
Issue number2
DOIs
Publication statusPublished - 2023 Jan 12

Bibliographical note

Funding Information:
B.L.S. and G.K. contributed equally to this work. This work has been supported by the Korea Institute of Science and Technology (Grant No. 2E31790) and the National Research Foundation of Korea (Grant No. NRF‐2020M3H4A3106354).

Publisher Copyright:
© 2022 The Authors. Advanced Materials published by Wiley-VCH GmbH.

Keywords

  • 2D materials
  • dimension control
  • nanosheets
  • polarons
  • transparent electrodes

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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