Song, Bo; Bai, Tianwen; Xu, Xiaotian; Chen, Xu; Liu, Dongming; Guo, Jiali; Qin, Anjun; Ling, Jun; Tang, Ben Zhong published the artcile< Multifunctional Linear and Hyperbranched Five-Membered Cyclic Carbonate-Based Polymers Directly Generated from CO2 and Alkyne-Based Three-Component Polymerization>, Application of C26H18Br2, the main research area is multifunctional linear hyperbranched cyclic carbonate polymer; carbon dioxide alkyne aryl halide polymerization.
Fixing carbon dioxide (CO2) into polymeric materials is a subject of enduring interest but limited to few efficient polymerizations In this work, a facile Pd(OAc)2/LiOtBu-catalyzed one-pot, three-component polymerization of CO2, bis(propargylic alc.)s, and aryl dihalides under atm. pressure is developed. Linear and hyperbranched multifunctional five-membered cyclic carbonate (5CC)-based polymers with well-defined structures, high weight-average mol. weights (Mw up to 42500), and versatile properties such as aggregation-induced emission and chiral and porous properties are successfully produced in excellent yields (up to 96%). The reaction mechanism was well studied via the d. functional theory calculation and in situ Fourier transform IR spectroscopy, both indicating that there is synergistic reaction effect among CO2, bis(propargylic alc.)s, and aryl dihalides. The polymers could be postfunctionalized by amines via catalyst-free regioselective ring-opening reaction with 100% grafting ratio. Thus, this work not only develops a new way to directly fix CO2 into polymeric materials but also provides the 5CC-based polymers with versatile properties, showing great potentials in diverse areas.
Macromolecules (Washington, DC, United States) published new progress about Aggregation-induced emission. 184239-35-8 belongs to class bromides-buliding-blocks, and the molecular formula is C26H18Br2, Application of C26H18Br2.
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary