Urgel, Jose I.; Bock, Julian; Di Giovannantonio, Marco; Ruffieux, Pascal; Pignedoli, Carlo A.; Kivala, Milan; Fasel, Roman published their research in RSC Advances in 2021. The article was titled 《On-surface synthesis of π-conjugated ladder-type polymers comprising nonbenzenoid moieties》.Synthetic Route of C14H8Br2 The article contains the following contents:
On-surface synthesis provides a powerful approach toward the atomically precise fabrication of π-conjugated ladder polymers (CLPs). We report herein the surface-assisted synthesis of nonbenzenoid CLPs from cyclopenta-annulated anthracene monomers on Au(111) under ultrahigh vacuum conditions. Successive thermal annealing steps reveal the dehalogenative homocoupling to yield an intermediate 1D polymer and the subsequent cyclodehydrogenation to form the fully conjugated ladder polymer. Notably, neighboring monomers may fuse in two different ways, resulting in six- and five-membered rings, resp. The structure and electronic properties of the reaction products have been investigated via low-temperature scanning tunneling microscopy and spectroscopy, complemented by d.-functional theory calculations Our results provide perspectives for the on-surface synthesis of nonbenzenoid CLPs with the potential to be used for organic electronic devices. In the experimental materials used by the author, we found 9,10-Dibromoanthracene(cas: 523-27-3Synthetic Route of C14H8Br2)
9,10-Dibromoanthracene(cas: 523-27-3) can be sublimated and oxidized to generate anthraquinone. Soluble in hot benzene and hot toluene, slightly soluble in alcohol, ether and cold benzene, insoluble in water.Synthetic Route of C14H8Br2
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary