《Distannylated Bithiophene Imide: Enabling High-Performance n-Type Polymer Semiconductors with an Acceptor-Acceptor Backbone》 was published in Angewandte Chemie, International Edition in 2020. These research results belong to Shi, Yongqiang; Guo, Han; Huang, Jiachen; Zhang, Xianhe; Wu, Ziang; Yang, Kun; Zhang, Yujie; Feng, Kui; Woo, Han Young; Ortiz, Rocio Ponce; Zhou, Ming; Guo, Xugang. Formula: C51H42O3Pd2 The article mentions the following:
A distannylated electron-deficient bithiophene imide (BTI-Tin) monomer was synthesized and polymerized with imide-functionalized co-units to afford homopolymer PBTI and copolymer P(BTI-BTI2), both featuring an acceptor-acceptor backbone with high mol. weight Both polymers exhibited excellent unipolar n-type character in transistors with electron mobility up to 2.60 cm2 V-1 s-1. When applied as acceptor materials in all-polymer solar cells, PBTI and P(BTI-BTI2) achieved high power-conversion efficiency (PCE) of 6.67% and 8.61%, resp. The PCE (6.67%) of polymer PBTI, synthesized from the distannylated monomer, is much higher than that (0.14%) of the same polymer PBTI*, synthesized from typical dibrominated monomer. The 8.61% PCE of copolymer P(BTI-BTI2) is also higher than those (<1%) of homopolymers synthesized from dibrominated monomers. The results demonstrate the success of BTI-Tin for accessing n-type polymers with greatly improved device performance. In the experiment, the researchers used many compounds, for example, Tris(dibenzylideneacetone)dipalladium(0)(cas: 51364-51-3Formula: C51H42O3Pd2)
Tris(dibenzylideneacetone)dipalladium(0)(cas: 51364-51-3) is the most widely used PdO precursor complex in synthesis and catalysis, in particular as a catalyst for various coupling reactions. Formula: C51H42O3Pd2 It is used as a catalyst precursor for palladium-catalyzed carbon-nitrogen bond formation, conversion of aryl chlorides, triflates and nonaflates to nitroaromatics.
Referemce:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI