One-Pot Synthesis of Fully Conjugated Amphiphilic Block Copolymers Using Asymmetrically Functionalized Push-Pull Monomers was written by Ahluwalia, Gagandeep;Subbiah, Jegadesan;Mitchell, Valerie D.;Saker Neto, Nicolau;Jones, David J.. And the article was included in Macromolecules (Washington, DC, United States) in 2022.Reference of 128-08-5 This article mentions the following:
Developing a fully conjugated block copolymer with a specific mol. weight and block ratio is crucial for understanding the impact of the bulk heterojunction morphol. on device performance in organic photovoltaic devices. Herein, we have revealed a strategy to synthesize fully conjugated amphiphilic diblock copolymers in one pot by combining Suzuki and Stille pseudoliving polymerizations Our strategy was to synthesize asym. functionalized push-pull monomers as precursors for the synthesis of the donor polymer poly[4,8-bis(5-(2-ethylhexyl)-4-hexylthiophene-2-yl)-benzo[1,2-b:4,5b’]dithiophenebenzo [c][1,2,5]thiadiazole] p(BDT-BT) and the acceptor polymer poly[N,N’-bis(2-octyldodecyl)-naphthalene-1,4,5,8-bis(dicarboximide)-2,6-diyl]-alt-5,5′-(2,2′-bithiophene) p(NDI-TT). The acceptor monomer (M1) was synthesized with tributyltin and triflate functionalities, whereas the donor monomer (M2) was prepared with MIDA boronate and bromide groups. These heterobifunctional acceptor and donor monomers were suitable for Stille and Suzuki polymerizations, resp. Initially, TfOPh-p(NDI-TT) was synthesized by pseudoliving Stille polymerization with a single triflate (OTf) end group and specific mol. weight Subsequently, TfOPh-p(NDI-TT) was used as a macroinitiator to grow an amphiphilic diblock copolymer (BCP1) via a grafting-into approach, where the donor polymer block was grown using pseudoliving Suzuki polymerization Lastly, one-pot synthesis of the amphiphilic diblock copolymer (BCP2) was established using optimized conditions developed for stepwise block copolymer synthesis. In the experiment, the researchers used many compounds, for example, 1-Bromopyrrolidine-2,5-dione (cas: 128-08-5Reference of 128-08-5).
1-Bromopyrrolidine-2,5-dione (cas: 128-08-5) belongs to organobromine compounds. Bromo compounds are employed in a variety of metal-catalyzed coupling reactions. They are also ideal candidates for the synthesis of Grignard reagents that have wide-applicability in organic synthesis. The principal reactions for organobromides include dehydrobromination, Grignard reactions, reductive coupling, and nucleophilic substitution.Reference of 128-08-5
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary