Xiao, Yang published the artcileThermally stable red electroluminescent hybrid polymers derived from functionalized silsesquioxane and 4,7-bis(3-ethylhexyl-2-thienyl)-2,1,3-benzothiadiazole, Synthetic Route of 303734-52-3, the publication is Journal of Polymer Science, Part A: Polymer Chemistry (2009), 47(21), 5661-5670, database is CAplus.
Hyperbranched organic-inorganic hybrid conjugated polymers P1 and P2 were prepared via FeCl3-oxidative polymerization of 4,7-bis(3-ethylhexyl-2-thienyl)-2,1,3-benzothiadiazole (A) and octa(3-ethylhexyl-2-thienyl-phenyl)polyhedral oligomeric silsesquioxane (POSS) (B) at different POSS concentrations Compared to linear polymer PM derived from A, P1, and P2 exhibit much higher PL quantum efficiency (ϕPL-f) in condensed state with improved thermal stability. ϕPL-f of P1 and P2 increased by 80% and 400%, and the thermal degradation temperatures of P1 and P2 are increased by 35° and 46°, resp. Light-emitting diodes were fabricated using P1, P2, and PM. While the electroluminescent spectra of both P1 and PM show λmax at 660 nm, P1 exhibits a much narrower EL spectrum and higher electroluminescence (∼500%) compared with PM at a same voltage and film thickness. The maximum current efficiency of P1 is more than seven times of that of PM. The turn-on voltages of the LEDs are in the order of P2>PM>P1. LED prepared by blending P1 with MEH-PPV shows a maximum luminescence of 2.6 × 103 cd/m2 and a current efficiency of 1.40 cd/A, which are more than twice (1.1 × 103 cd/m2) and five times (0.27 cd/A) of LED of PM/MEH-PPV blend, resp.
Journal of Polymer Science, Part A: Polymer Chemistry published new progress about 303734-52-3. 303734-52-3 belongs to bromides-buliding-blocks, auxiliary class Thiophene,Bromide, name is 2-Bromo-3-(2-ethylhexyl)thiophene, and the molecular formula is C14H31NO2, Synthetic Route of 303734-52-3.
Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary