The first liquid crystalline phthalocyanine derivative capable of edge-on alignment for solution processed organic thin-film transistors

摘要

Tetraoctyl-substituted vanadyl phthalocyanine (OVPc4C8) as a new NIR-absorbing discotic liquid crystalline material can form highly ordered thin films with edge-on alignment of the molecules and molecular packing mode identical to that in the phase II of OVPc for solution processed OTFTs with mobility up to 0.017 cm~2 V~(-1)s~(-1).rnOver the past two decades, considerable interest has been shown in the use of organic semiconductors as active materials in optoelectronic devices such as organic thin-film transistors (OTFTs) and organic solar cells (OSCs). In order to fully explore the advantages of organic semiconductors, i.e., mechanical flexibility and low-cost for large-area optoelectronic devices, it is important to develop solution-processible materials for device fabrication.