Quality Control of 4,4′-Dibromobiphenyl. Recently I am researching about ACTIVATED DELAYED FLUORESCENCE; PHOTOPHYSICAL PROPERTIES; 2-PHOTON ABSORPTION; CATALYZED SYNTHESIS; ELECTRON-ACCEPTOR; BUILDING-BLOCKS; ORGANIC-SOLIDS; DESIGN; EMITTER; PROBES, Saw an article supported by the Ministry of science and technology, TaiwanMinistry of Science and Technology, Taiwan; Academy of FinlandAcademy of FinlandEuropean Commission [317903]. Published in WILEY-V C H VERLAG GMBH in WEINHEIM ,Authors: Belyaev, A; Cheng, YH; Liu, ZY; Karttunen, AJ; Chou, PT; Koshevoy, IO. The CAS is 92-86-4. Through research, I have a further understanding and discovery of 4,4′-Dibromobiphenyl
The D-pi-A type phosphonium salts in which electron acceptor (A=-+PR3) and donor (D=-NPh2) groups are linked by polarizable pi-conjugated spacers show intense fluorescence that is classically ascribed to excited-state intramolecular charge transfer (ICT). Unexpectedly, salts with pi=-(C6H4)(n)- and -(C10H6C6H4)- exhibit an unusual dual emission (F-1 and F-2 bands) in weakly polar or nonpolar solvents. Time-resolved fluorescence studies show a successive temporal evolution from the F-1 to F-2 emission, which can be rationalized by an ICT-driven counterion migration. Upon optically induced ICT, the counterions move from -+PR3 to -NPh2 and back in the ground state, thus achieving an ion-transfer cycle. Increasing the solvent polarity makes the solvent stabilization dominant, and virtually stops the ion migration. Providing that either D or A has ionic character (by static ion-pair stabilization), the ICT-induced counterion migration should not be uncommon in weakly polar to nonpolar media, thereby providing a facile avenue for mimicking a photoinduced molecular machine-like motion.
About 4,4′-Dibromobiphenyl, If you have any questions, you can contact Belyaev, A; Cheng, YH; Liu, ZY; Karttunen, AJ; Chou, PT; Koshevoy, IO or concate me.. Quality Control of 4,4′-Dibromobiphenyl
Reference:
Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem