163686-47-3Relevant academic research and scientific papers
Mixed-halide triphenyl methyl radicals for site-selective functionalization and polymerization
Arnold, Mona,Blinder, Rémi,Chen, Lisa,Jelezko, Fedor,Kuehne, Alexander J. C.
, p. 27653 - 27658 (2021/08/25)
Derivatives of the stable, luminescent tris-2,4,6-trichlorophenylmethyl (TTM) radical exhibit unique doublet spin properties that are of interest for applications in optoelectronics, spintronics, and energy storage. However, poor reactivity of the chloride-moieties limits the yield of functionalization and thus the accessible variety of high performance luminescent radicals. Here, we present a pathway to obtain mixed-bromide and chloride derivatives of TTM by simple Friedel-Crafts alkylation. The resulting radical compounds show higher stability and site-specific reactivity in cross-coupling reactions, due to the better leaving group character of the para-bromide. The mixed halide radicals give access to complex, and so far inaccessible luminescent open-shell small molecules, as well as polymers carrying the radical centers in their backbone. The new mixed-halide triphenyl methyl radicals represent a powerful building block for customized design and synthesis of stable luminescent radicals.
Generation, reactions, and kinetics of sterically congested triplet diphenylcarbenes. Effects of bromine groups
Tomioka, Hideo,Watanabe, Tetsuya,Hattori, Makoto,Nomura, Naoki,Hirai, Katsuyuki
, p. 474 - 482 (2007/10/03)
A series of polybrominated diphenylcarbenes (DPCs) are generated by irradiation of the corresponding precursor diazomethanes, and their reactivities are investigated by means of low-temperature spectroscopies as well as laser flash photolysis. Triplet bis
