Novel Strategy for Organic Cocrystals of n-Type and p-Type Organic Semiconductors with Advanced Optoelectronic Properties

Abstract

Cocrystallization has been applied widely for material synthesis. Recently cocrystal of organic molecules has been developing rapidly, taking the advantages of the flexibility and self-assembly of organic molecules. Here we report an experimental study of a cocrystal of copper-phthalocyanines and fluorinated ones. We have grown the samples via the vapor-phase deposition of the mixture with different mass ratios from 1:13.5 to 6:1. As suggested by our scanning electron microscopy (SEM), X-ray diffraction (XRD), and Raman spectroscopy, new crystal structures and morphologies through our novel strategy for the cocrystallization of these molecules have been found. Our work will provide a solid foundation to systematically synthesize the cocrystal of phthalocyanine molecules with new crystal structures, thus providing the opportunity to advance material properties.

An organic cocrystal based on phthalocyanine with ideal packing mode towards high-performance ambipolar property

“…Hence, the physical vapor transport method (PVT) was adopted to prepare the cocrystals comprising ZnPc and F 16 CuPc due to the excellent thermal stability of Pc-based materials. 22 By adjusting the crystal growth parameters, large-size cocrystals of ZnPc–F 16 CuPc were obtained. All cocrystals with centimeters in length show violet color and 1D needle-like shape (Fig.…”

Crystallization Behavior of Copper Tetra-tert-butylporphyrazine in Ultrathin Films

“…From the practical standpoint, highly dispersed unsubstituted ZnPc appears to be a good low-cost candidate for a main component, while tailor-made MPc’s of the AAAB structural type , appear to be promising as a structural modifier. Very recently a similar approach has been proposed to obtain organic semiconductors with advanced electrooptic properties …”

“…Very recently a similar approach has been proposed to obtain organic semiconductors with advanced electrooptic properties. 49 ■ CONCLUSIONS Film-forming properties of highly symmetrical copper tetratert-butylporphyrazine (C 4h -CuPaz) have been examined by using the Langmuir−Schaefer technique, aiming to reveal the mechanism of thin-film crystallization and, thus, to better understand how orderly films of crystalline metal phthalocyanines (MPc's) can be deposited from solution. The said dye is remarkable for its propensity to form three-dimensional (3D) crystallites irrespective of experimental conditions.…”

Peripherally and non-peripherally carboxylic acid substituted Cu(ii) phthalocyanine/reduced graphene oxide nanohybrids for hydrogen evolution reaction catalysts

“…rGO and rGO-modified types of CuPc nanocomposites include relatively low angle XRD peaks that could be attributed to individual CuPc components as well as their interactions with rGO. 90 The amount of the loaded CuPc was determined by X-ray photoelectron spectroscopy (as shown in Fig. S9-S11 and Table S1 †).…”