Thanikachalam, Venugopal; Jayabharathi, Jayaraman; Karunakaran, Uthirapathy; Anudeebhana, Jagathratchagan; Thilagavathy, Shanmugam; Sivaraj, Seker published the artcile< Angular shaped AIE generator based luminophores for mechanochromism: An explosive sensor>, Reference of 3893-18-3, the main research area is aggregation induced emission enhancement generator based luminophore mechanochromism.
We have synthesized (E)-N,N-diphenyl-4-(2-(2-(4′-(1,2,2-triphenylvinyl)-[1,1′-biphenyl]- 4-yl)vinyl)- 1H-phenanthro[9,10-d]imidazol-1-yl)aniline (TPE-DBPPI) and (E)- 2-(4′-(2-(1-(4-(diphenylamino)phenyl)- 1H-phenanthro[9,10-d]imidazol-2-yl)vinyl)-[1,1′-biphenyl]- 4-yl)- 3,3-diphenylacrylonitrile (TPA-PPICN) consist of triphenylamine (donor), phenanthroimidazole (acceptor) and tetraphenylethylene (AIE generator). The twisted TPE-DBPPI and TPA-PPICN depict aggregation induced emission enhancement (AIEE) and demonstrated mechanochromic (MC) behavior between blue and green emission. The restricted-intramol.-rotation (RIR) of aryl rings of TPE (TPE-DBPPI) and TPA (TPA-PPICN) in the aggregated phase reduced the non-radiative relaxation channel hence, increase of emission intensity with high photoluminescence quantum yield (PLQY) in film state was observed The PLQY of TPE-DBPPI / TPA-PPICN in various phases are of 58/76% (pristine), 62/83% (grinding) and 65/88% (annealing). The film optical studies and powder XRD (PXRD) analyses implies that the change of twisted crystalline phase of TPE-DBPPI and TPA-PPICN to planar amorphous state results in mechanochromism. Also, these materials detect picric acid in aqueous and film owing to the proton-binding ability of azomethine nitrogen of imidazole which was confirmed by both NMR and DFT studies. The high neg. ΔGet [- 3.01 eV (TPE-DBPPI) and – 3.06 eV (TPA-PPICN)] indicates the thermodn. feasibility of photo electron transfer (PET) process.
Materials Today Communications published new progress about Absorption. 3893-18-3 belongs to class bromides-buliding-blocks, and the molecular formula is C9H7BrO, Reference of 3893-18-3.
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary