A method for the preparation of two-dimensional organic single crystals based on the synergistic effect of supramolecular "attraction-repulsion"

Abstract

The invention discloses a molecular design strategy of a two-dimensional organic single crystal and its preparation and application. In this strategy, the molecules are composed of planar supramolecular fragments and non-planar sterically hindered fragments. The synergistic effect of supramolecular "attraction-repulsion" between the two effectively induces the two-dimensional self-assembly of such molecules, forming a kind of Amphiphilic layered stacked two-dimensional organic single crystals. The invention realizes the rational design of organic small molecules in the field of two-dimensional organic single crystal assembly. Through the corresponding single crystal analysis and other characterization methods, the growth mechanism of this two-dimensional organic single crystal material and the intrinsic relationship between the molecular structure and the two-dimensional morphology are confirmed. In addition, the 2D organic single crystals prepared by the strategy of the present invention also exhibit excellent optoelectronic integration properties. The present invention provides an efficient and versatile strategy for the preparation of two-dimensional organic semiconductor crystals, facilitating the design of organic semiconductor crystals for high-performance optoelectronics.

Description

technical field [0001] The invention belongs to the technical field of organic single crystal molecule preparation, and in particular relates to a molecular design strategy of a two-dimensional organic single crystal and its preparation and application. Background technique [0002] Since Novoselov et al. obtained graphene through mechanical exfoliation in 2004, two-dimensional materials have been favored by more and more scientific researchers, mainly because of their large specific surface area and special two-dimensional plane. The two-dimensional confinement effect brought by it has unlimited application potential in nano-photonics and other fields. In the past few decades, 2D materials have been prepared mainly from inorganic materials, such as black phosphorus, transition metal dichalcogenides, and hexagonal boron nitride. Recently, two-dimensional organic single crystals, as another new type of two-dimensional materials, have also received more and more attention fro...

AI Technical Summary

Problems solved by technology

However, due to the complexity and variability of organic molecules, molecular design strategies for two-dimensional organic single crystals are extremely scarce, which seriously affects the application prospects of two-dimensional organic single crystals in optoelectronic devices.

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