Linxiao Hao, Chengyi Xiao, Jing Zhang, Wei Jiang, Wei Xu and Zhaohui Wang
J. Mater. Chem. C, 2013,1, 7812-7818
DOI:
10.1039/C3TC31912A,
Paper
A new family of perpendicularly entangled perylene diimides and di(perylene diimide) dimers featuring double linkage was synthesized via copper-mediated Ullmann coupling. The highly twisting structures endow them remarkable electron transport characteristics with comparable mobility reaching 0.16 cm2 V−1 s−1 and an on/off current ratio up to 5.0 × 106 in air for PDI dimer based solution-processed OTFTs. While diPDI dimers with expanded conjugated core proved their competing electron mobilities as PDI dimers, especially for their low threshold voltage and good air stability.