In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Fine-Tuning Batch Factors of Polymer Acceptors Enables a Binary All-Polymer Solar Cell with High Efficiency of 16.11%, published in 2022-01-20, which mentions a compound: 60748-47-2, Name is PD2DBA3, Molecular C51H42O3Pd2, Formula: C51H42O3Pd2.
Random conjugated polymers, such as typical polymerized small mol. acceptors (PSMAs), concurrently suffer from the dual batch factors of mol. weights (MWs) and regioregularity, which seriously interfere with the study of the relationship between batch factors and polymer properties. Here, four isomer-free PSMAs, PA-5 and three members of a PA-6 series with low (L), medium (M), and high (H) MWs, in which 5 and 6 define linkage position throughout conjugated backbone, are designed and synthesized to clearly investigate polymer batch effects. These studies reveal that PA-6-L and PA-6-M have ignorable batch differences within deviations, which deliver comparable maximum efficiencies of 14.81% and 14.99%, resp. The PA-6-H based cell is processed from chlorobenzene with its high b.p., due to the limited solubility in other common solvents, leading to large-size phase separation during prolonged film drying process, and thereby inferior performance. In contrast, PA-5 possesses diverse absorption characteristics, and ordered crystallization, which prompts higher short-circuit c.d. and fill factor in the cell. As a result, the corresponding device realizes a photovoltaic performance of 16.11%, which is one of the best binary all-polymer solar cells in the reported literature to date. This study provides a new insight into complicated batch effects of PSMAs on device performance while avoiding cross-talk between them.
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Reference:
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method