Self‐Aggregation of Oligomethylene‐Tethered Diketopyrrolopyrrole Dimers. Issue 2 (30th January 2020)

• Record Type: Journal Article
• Authors: Lin, Xu; Okazawa, Yusuke; Tani, Yuki; Ouchi, Hayato; Nakayama, Ken‐ichi; Yagai, Shiki
• Is Part Of: Asian journal of organic chemistry. Volume 9:Issue 2(2020)
• Page Start: 222
• Page End: 225
• Publication Date: 2020-01-30
• Subjects: Self-aggregation -- nanostructures -- diketopyrrolopyrrole dyes -- phase-separation -- organic photovoltaics; Chemistry, Organic -- Periodicals; Organic compounds -- Synthesis -- Periodicals; 547.005
• DOI: 10.1002/ajoc.201900734
• Languages: English
• ISSNs: 2193-5807

Abstract

Abstract: Two diketopyrrolopyrrole dimers with different oligomethylene tether length showed distinct aggregation behaviours, leading to a significant difference in the degree of phase separation upon mixing with PC61 BM. Despite almost same optical properties, their blend films with PC61 BM exhibited distinct power conversion efficiency in bulk‐heterojunction solar cells as a result of difference in phase separation. Abstract : Two diketopyrrolopyrrole dimers with different oligomethylene tether length showed distinct aggregation behaviours, DPP‐C6 showed stronger aggregation than DPP‐C7 .