Feng, Xing published the artcilePyrene-Based Y-shaped Solid-State Blue Emitters: Synthesis, Characterization, and Photoluminescence, HPLC of Formula: 111865-47-5, the publication is Chemistry – An Asian Journal (2012), 7(12), 2854-2863, S2854/1-S2854/29, database is CAplus and MEDLINE.
A series of pyrene-based Y-shaped blue emitters, namely, 7-tert-butyl-1,3-diarylpyrenes 4 were synthesized by the Suzuki cross-coupling reaction of 7-tert-butyl-1,3-dibromopyrene with a variety of p-substituted phenylboronic acids in good to excellent yields. These compounds were fully characterized by X-ray crystallog., UV/Vis absorption and fluorescence spectroscopy, DFT calculations, thermogravimetric anal., and differential scanning calorimetry. Single-crystal X-ray anal. revealed that the Y-shaped arylpyrenes exhibited a low degree of π stacking owing to the steric effect of the bulky tert-Bu group in the pyrene ring at the 7-position, and thus, the intermol. π-π interactions were effectively suppressed in the solid state. Despite the significantly twisted nonplanar structures, these mols. still displayed efficient intramol. charge-transfer emissions with clear solvatochromic shifts on increasing solvent polarity. An intriguing fact is that all of these mols. show highly blue emissions with excellent quantum yields in the solid state. Addnl., the two compounds containing the strongest electron-accepting groups, CN (4 d) and CHO (4 f), possess high thermal stability, which, together with their excellent solid-state fluorescence efficiency, makes them promising potential blue emitters in organic light-emitting device applications.
Chemistry – An Asian Journal published new progress about 111865-47-5. 111865-47-5 belongs to bromides-buliding-blocks, auxiliary class Benzenes, name is Mono(N,N,N-trimethyl-1-phenylmethanaminium) tribromide, and the molecular formula is C10H16Br3N, HPLC of Formula: 111865-47-5.
Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary