Abstract
Cocrystal engineering is an advanced supramolecular strategy that has attracted a lot of research interest. Many studies on cocrystals in various application fields have been reported, with a particular focus on the optoelectronics field. However, few articles have combined and summarized the electronic and magnetic properties of cocrystals. In this review, we first introduce the growth methods that serve as the basis for realizing the different properties of cocrystals. Thereafter, we present an overview of cocrystal applications in electronic and magnetic fields. Some functional devices based on cocrystals are also introduced. We hope that this review will provide researchers with a more comprehensive understanding of the latest progress and prospects of cocrystals in electronic and magnetic fields.
Highlights
Organic semiconductor materials have outstanding characteristics, such as easy preparations, large-area solution processing, good flexibility, light weight, playing a crucial role in chemical engineering and materials design
This review systematically introduces the recent developments of cocrystals in electronic and magnetic areas because of their critical research value
Through co-crystallization, the band gaps of the semiconductors can be adjusted to facilitate the energy matching between the cocrystal Frontier orbitals and the work function of the injected electrodes, which is beneficial to efficient charge injection to improve the organic field-effect transistors (OFETs) performance
Summary
Organic semiconductor materials have outstanding characteristics, such as easy preparations, large-area solution processing, good flexibility, light weight, playing a crucial role in chemical engineering and materials design. Many advances have been made in the design and synthesis of high-performance organic crystals (Dong et al, 2013; Zhang X. et al, 2018; Yu P. et al, 2019; Qin et al, 2021). Since these materials have a single component that only exhibits intrinsic properties, further applications are limited. After John Ferraris found the TTF-TCNQ (TTF, tetrathiafulvalene; TCNQ, 7,7,8,8-tetracyanoquinodimethane) cocrystal with high electrical conductivity in 1973 (Ferraris et al, 1973), people became increasingly interested in cocrystal engineering and conducted a wide range of correlational
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