《Synthesis of π-extended B←N coordinated phenanthroimidazole dimers and their linear and nonlinear optical properties》 was written by Vanga, Mukundam; Sa, Shreenibasa; Kumari, Anupa; Murali, Anna Chandrasekar; Nayak, Prakash; Das, Ritwick; Venkatasubbaiah, Krishnan. Product Details of 3141-27-3 And the article was included in Dalton Transactions in 2020. The article conveys some information:
Intramol. B←N coordinated fluorophores have shown potential applications in optoelectronics and as sensors due to their unique photophys. properties. In this work, we report the synthesis and characterization of π-conjugated boron doped phenanthroimidazole dimers I [7-11, R = H, C6H13; X = bond, 2,5-(C6H13O)2C6H3, 2,5-thiophenediyl, 9,9-(C6H14)2-2,7-fluorenediyl, 9-C6H14-2,7-carbazolediyl]. The synthesis starts from 1-(4-RC6H4)-2-(4-BrC6H4)-1H-phenanthro[9,10-d]imidazole via BBr3 borylation, methylation of the boron center, boronation and Suzuki coupling with dibromides BrXBr. All the π-conjugated B←N coordinated phenanthroimidazole dimers exhibited high quantum yields in solution (up to 99%) and moderate quantum yields in the solid state (up to 51%). We investigated the nonlinear optical properties of phenanthroimidazole dimers and found that the measurement of two-photon-absorption cross-section is correlated with the conjugation length. In the experimental materials used by the author, we found 2,5-Dibromothiophene(cas: 3141-27-3Product Details of 3141-27-3)
2,5-Dibromothiophene(cas: 3141-27-3) , is mainly used as pharmaceutical intermediate and synthesis intermediate. 2,5-Dibromothiophene polymerizes by debromination with magnesium catalyzed by nickel compounds to form poly(2,5- thienylene) .Product Details of 3141-27-3
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary