Preparation of Cocrystal Nanofibres of Cobalt Octaethylporphyrin and Tetracyanoquinodimethane with Good Photoresponse

Abstract

Cocrystal nanofibres of cobalt octaethylporphyrin and tetracyanoquinodimethane were prepared by a facile solution method and fully characterized by SEM, AFM, XRD, Raman, EDX, and UV-vis-NIR. The as-prepared cocrystal nanofibres had smooth surfaces and uniform dimension. When incorporated into prototype devices, they exhibited good photoresponse at ambient conditions. Additionally, the phototransistor characteristics with a maximum I(on)/I(off) ratio of -460 was demonstrated. The facile synthesis and good photoresponse may boost the potential applications of cocrystal-based nanostructures in future miniaturized devices.

Organic Cocrystals: Recent Advances and Perspectives for Electronic and Magnetic Applications

“…Since the discovery of highly conductive polyacetylene in 1977 ( Chiang et al, 1977 ), people have been increasingly keen to explore the electronic properties of organic materials ( Zhang et al, 2017b ). In recent years, a large number of organic D-A complexes have been synthesized, which exhibit field-effect ( Zheng et al, 2018 ; Mandal et al, 2020 ), photoresponse ( Wu et al, 2014a ), photovoltaic ( Zhang et al, 2016 ), thermoelectric ( Liang et al, 2020 ), and superconducting properties ( Ferraris et al, 1973 ). With the development, the electronic properties of cocrystals may eventually be comparable to those of single crystals ( Jiang et al, 2018 ).…”