A Hybrid Organogel of a Low Band Gap Diketopyrrolopyrrole with PC71BM: Phase Separated Morphology and Enhanced Photoconductivity

作者：Ghosh Samrat; Das Satyajit; Saeki Akinori; Praveen Vakayil K; Seki Shu; Ajayaghosh Ayyappanpillai^*

来源：ChemNanoMat, 2018, 4(8): 831-836.

DOI：10.1002/cnma.201800149

• diketopyrrolopyrrole
• organogel
• low band gap
• phase-separation
• transient photoconductivity

Organogels based on self-assembled low band gap organic semiconductors are of great interest in the field of optoelectronics, although there are not many such systems known. Herein, we report a diketopyrrolopyrrole derivative (DPP-Amide) with H-bonding terminal groups that promote one-dimensional (1D) assembly. This design leads to the formation of an organogelator having a low band gap of 1.5 eV, and near-infrared (NIR) emission in the self-assembled state. Furthermore, in the film state self-assembled DPP-Amide showed enhanced intrinsic photoconductivity when compared to isolated molecules upon the addition of different weight ratio of phenyl-C-71-butyric acid methyl ester (PC71BM).

• 出版日期2018-8