An organic cocrystal based on phthalocyanine with ideal packing mode towards high-performance ambipolar property. Issue 25 (20th June 2022)

• Record Type: Journal Article
• Authors: Li, Shuyu; Zheng, Lei; Chan, Yion; Li, Bin; Sun, Yajing; Sun, Lingjie; Zhen, Chun; Zhang, Xiaotao; Hu, Wenping
• Is Part Of: Journal of materials chemistry. Volume 10:Issue 25(2022)
• Page Start: 9596
• Page End: 9601
• Publication Date: 2022-06-20
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d2tc01341j
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : The identical macrocyclic pair promotes desired packing mode with tight and large-overlapped π–π stacking in phthalocyanine-based cocrystal, which ensures high-performance ambipolar property. Abstract : The organic cocrystal strategy provides a shortcut toward ambipolar materials but realizing excellent electrical performance remains a challenge due to the lack of a definite direction in the rational design of cocrystals. Herein, for the first time, we demonstrated a novel strategy of using highly compatible and large-π-conjugated pairs to achieve high-performance ambipolar organic field-effect transistors (OFETs), referring to zinc phthalocyanine (ZnPc) as p-type and hexadecafluorophthalocyanine (F16 CuPc) as n-type units. The identical macrocycles and complementary electronic property of the pairs provide an ideal platform to realize the tight face-to-face stacking mode with a large π–π overlap, which is the desired supramolecular packing mode for high-efficiency charge transport. As a result, the ZnPc–F16 CuPc cocrystal exhibited ambipolar field-effect mobility up to 1.64 and 0.68 cm 2 V −1 s −1 for holes and electrons, respectively, one of the best results in the field.