Jia, Xiangqing; Nitsch, Joern; Ji, Lei; Wu, Zhu; Friedrich, Alexandra; Kerner, Florian; Moos, Michael; Lambert, Christoph; Marder, Todd B. published the artcile< Triarylborane-Based Helical Donor-Acceptor Compounds: Synthesis, Photophysical, and Electronic Properties>, HPLC of Formula: 576-83-0, the main research area is triarylborane helicene donor acceptor compound fluorescence UV electrochem electronic; boron; charge transfer; fluorescence; helicenes; luminescent.
The synthesis and characterization of 10-(dimesitylboryl)-N,N-di-p-tolylbenzo[c]phenanthren-4-amine (3-B(Mes)2-[4]helix-9-N(p-Tol)2 1) and 13-(dimesitylboryl)-N,N-di-p-tolyldibenzo[c,g]phenanthren-8-amine (3-B(Mes)2-[5]helix-12-N(p-Tol)2 2) are reported herein. Their electrochem. and photophys. properties have been studied exptl. and theor. The donor and acceptor-substituted helicene derivatives exhibit moderate fluorescence quantum yields in THF (Φf=0.48 and 0.61 for 1 and 2, resp.), which are higher than unsubstituted ones (Φf=0.18 for [4]helicene; Φf<0.05 for [n]helicenes (n≥5)). In the solid state, the Φf values are higher (Φf=1.00 and 0.55 for 1 and 2, resp.) than those in solution, most likely due to the restrictions of mol. motions. The S1←S0 transitions of 1 and 2 are predominately HOMO→LUMO transitions. Upon excitation with UV light, the interplanar angle between the two terminal aryl rings of the [5]helix core of 2 decreases (S1 state compared with S0 state), which is similar to placing a spring under an external force. Chemistry - A European Journal published new progress about Band gap. 576-83-0 belongs to class bromides-buliding-blocks, and the molecular formula is C9H11Br, HPLC of Formula: 576-83-0.
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary