So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Tsiko, Uliana; Bezvikonnyi, Oleksandr; Volyniuk, Dmytro; Minaev, Boris F.; Keruckas, Jonas; Cekaviciute, Monika; Jatautiene, Egle; Andruleviciene, Viktorija; Dabuliene, Asta; Grazulevicius, Juozas Vidas researched the compound: PD2DBA3( cas:60748-47-2 ).Name: PD2DBA3.They published the article 《TADF quenching properties of phenothiazine or phenoxazine-substituted benzanthrones emitting in deep-red/near-infrared region towards oxygen sensing》 about this compound( cas:60748-47-2 ) in Dyes and Pigments. Keywords: TADF quenching property phenothiazine phenoxazine substituted benzanthrones; emitting deep red NIR region oxygen sensing. We’ll tell you more about this compound (cas:60748-47-2).
Aiming to develop new deep-red/near-IR emitters, benzanthrone as a new acceptor moiety with a rigid mol. structure was used. For the design of target compounds phenothiazine and phenoxazine moieties with strong electron-donating ability were also used. Such combination allowed new materials demonstrating thermally activated delayed fluorescence (TADF) in the long wavelength region to be obtained. The maximum intensity of fluorescence of the solid samples of the synthesized compounds was observed at 700 nm. Electroluminescence was peaked at similar wavelength when the compounds were used as emitters for the fabrication of non-doped organic light-emitting diodes. Due to the different substitutions of benzanthrone moieties, the values of TADF lifetimes at room temperature were found to be in the range of 291-1198 μs which are directory related to their different oxygen sensing properties. Due to high sensitivity to the presence of oxygen in the atm., one of the obtained compounds was used for radiometric oxygen sensing. The film of mol. dispersion of phenoxazine containing compound in inert polymer ZEONEX showed the ratio of intensity of TADF taken in vacuum and of prompt fluorescence taken under oxygen purge of 15.2. The oxygen sensitivity of the film estimated by Stern-Volmer constant was found to be of 1.6 x 10-4 ppm-1, demonstrating good reversibility. The time dependent d. functional theory (DFT) calculations were used for the interpretation of the exptl. results related to the structure and photophys. properties of the compounds
After consulting a lot of data, we found that this compound(60748-47-2)Name: PD2DBA3 can be used in many types of reactions. And in most cases, this compound has more advantages.
Reference:
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method