Issue 7, 2022

Molecular design and crystallization process control for thin sheet-shaped organic semiconductor crystals with two-dimensional packing

Abstract

Sheet-liked organic semiconductor crystals with two-dimensional (2D) packed structures play an essential role in practical applications of high-property optoelectronic devices. Here, we report a practical example in combination with chemical structures and crystallization engineering to construct a balanced 2D network for organic thin sheet-shaped crystals. The introduction of the cyano group enabled the formation of hydrogen bonds, promoting the in-plane 2D network construction both in strength and direction with ππ (or CHπ) interactions. Through changing the chamber pressure and growth temperature, we realized a macroscopic morphology adjustment from rods to sheets with the same single crystal structure, ascribed to the relative strength changes of different facet energies. Such a macroscopic dimension control combined with supramolecular chemistry and crystal engineering offers a new perspective for boosting further developments for 2D stacked organic semiconductor crystals.

Graphical abstract: Molecular design and crystallization process control for thin sheet-shaped organic semiconductor crystals with two-dimensional packing

Supplementary files

Article information

Article type
Communication
Submitted
05 Jūl. 2021
Accepted
31 Aug. 2021
First published
08 Sept. 2021

J. Mater. Chem. C, 2022,10, 2556-2561

Molecular design and crystallization process control for thin sheet-shaped organic semiconductor crystals with two-dimensional packing

Y. Wan, Z. Zhang, H. Liu, J. Zhou, L. Liu, J. Deng and Y. Ma, J. Mater. Chem. C, 2022, 10, 2556 DOI: 10.1039/D1TC03133C

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