Issue 17, 2023

Scalable synthesis of soluble crystalline ionic-graphdiyne by controlled ion expansion

Abstract

Graphdiyne (GDY) is a promising material possessing extensive electronic tunability, high π conjugacy, and ordered porosity at a molecular level for the sp/sp2-hybridized periodic structures. Despite these advantages, the preparation of soluble and crystalline graphdiyne is limited by the relatively compact stacking interactions, mostly existing in thick-layer and insoluble solids. Herein, we proposed a strategy of “framework charge-induced intercalation (FCII)” for the synthesis of a soluble (4.3 mg ml−1) and yet interlayer-expanded (∼0.6 Å) crystalline ionic graphdiyne, named as N+-GDY, through regulating the interlayer interactions. The skeleton of such a sample is positively charged, and then the negative ions migrate to the interlayer to expand the space, endowing the N+-GDY with solution processability. The crystal structure of N+-GDY is proved through analysis of HR-TEM images under different axes of observation and theoretical simulations. The resulting N+-GDY possesses high dispersity in organic solvents to produce a pure-solution phase which is conducive to the formation of oriented N+-GDY films, accompanied by exfoliation–nanosheet restacking. The film exhibits a conductivity of 0.014 S m−1, enabling its applications in electronic devices.

Graphical abstract: Scalable synthesis of soluble crystalline ionic-graphdiyne by controlled ion expansion

Supplementary files

Article information

Article type
Edge Article
Submitted
16 Mar 2023
Accepted
03 Apr 2023
First published
11 Apr 2023
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY-NC license

Chem. Sci., 2023,14, 4612-4619

Scalable synthesis of soluble crystalline ionic-graphdiyne by controlled ion expansion

L. Wang, L. Qi, Q. Zhang, B. Xue, Z. Zheng, P. Yin, Y. Xue, W. Yang and Y. Li, Chem. Sci., 2023, 14, 4612 DOI: 10.1039/D3SC01393F

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