Category: 148231-12-3

Red-Light-Emitting System Based on Aggregation of Donor-Acceptor Derivatives in Polar Aqueous Media was written by Ishi-i, Tsutomu;Ikeda, Kei;Kichise, Yuki;Ogawa, Michiaki. And the article was included in Chemistry – An Asian Journal in 2012.Reference of 148231-12-3 This article mentions the following:

The authors have demonstrated that an efficient red-light-emitting system can be created in polar water media based on the aggregation of donor-acceptor dyes triphenylamine benzothiadiazole, triphenylamine benzoselenodiazole, and triphenylamine quinoxaline aggregates. The UV/Vis absorption and fluorescence spectra of the dyes were measured in a THF/water mixture, in which the concentration was kept at 1 × 10^-5 M and only the water fraction (volume%) was changed from 0% to 90%. The aggregation leads to the restriction of the solvation-induced nonradiative deactivation to recover and enhance the emission. In the experiment, the researchers used many compounds, for example, 5,8-Dibromoquinoxaline (cas: 148231-12-3Reference of 148231-12-3).

5,8-Dibromoquinoxaline (cas: 148231-12-3) belongs to pyrazine derivatives. Pyrazine is an N-heterocyclic moiety, and it can be easily prepared from ethylenediamine and 1,2-diketone, α-hydroxyketone, α-methyl ketone. A number of pyrazine-based derivatives were used as dyes or fluorescent probes.Reference of 148231-12-3

Referemce:
Pyrazine – Wikipedia,
Pyrazine | C4H4N2 – PubChem

Synthesis, Properties, and Reactivity of Bis-BN Phenanthrenes: Stepwise Bromination of the Main Scaffold was written by Zi, Lingjian;Zhang, Jinyun;Li, Chenglong;Qu, Yi;Zhen, Bin;Liu, Xuguang;Zhang, Lei. And the article was included in Organic Letters in 2020.Electric Literature of C8H4Br2N2 This article mentions the following:

Two bis-BN phenanthrenes I (7, R² = H; 8, R²-R² = CH₂CH₂) have been synthesized. Their photophys. properties are different from those of the reported mono-BN phenanthrenes. Moreover, the stepwise bromination of bis-BN phenanthrene 8 gave a series of brominated bis-BN phenanthrenes, with all of the mono-, di-, tri-, and tetrabrominated bis-BN phenanthrenes being successfully isolated and characterized. In addition, preliminary results showed that mono- and dibrominated species can be further functionalized by cross-coupling reactions. In the experiment, the researchers used many compounds, for example, 5,8-Dibromoquinoxaline (cas: 148231-12-3Electric Literature of C8H4Br2N2).

5,8-Dibromoquinoxaline (cas: 148231-12-3) belongs to pyrazine derivatives. Pyrazinesare six-membered aromatic heterocyclic organic compounds with two nitrogen atoms at 1,4-positions. Pyrazine is a weaker base (pKb = 13.4) than pyridine (pKb = 8.8), pyrimidine (pKb = 12.7). Pyrazines are chemical compounds (technically called “methoxypyrazines”) found in grape skin and stems that are responsible for many “green” flavors in wine. Levels of pyrazines are dependent on viticultural practices, climate, and grape variety.Electric Literature of C8H4Br2N2

Referemce:
Pyrazine – Wikipedia,
Pyrazine | C4H4N2 – PubChem

The effect of acceptor structure on emission color tuning in organic semiconductors with D-π-A-π-D structures was written by Ledwon, Przemyslaw;Wiosna-Salyga, Gabriela;Chapran, Marian;Motyka, Radoslaw. And the article was included in Nanomaterials in 2019.Application of 148231-12-3 This article mentions the following:

A series of novel donor-acceptor D-π-A-π-D compounds were synthesized and characterized in order to determine the influence of different acceptor units on their properties. The introduction of acceptor moieties had a direct impact on the HOMO and LUMO energy levels. Fluorescence spectra of compounds can be changed by the choice of an appropriate acceptor and were shifted from the green to the near-IR part of spectra. Due to observed concentration induced emission quenching, the green exciplex type host was used to evaluate the potential of synthesized mols. as emitters in organic light emitting diodes (OLEDs). In the experiment, the researchers used many compounds, for example, 5,8-Dibromoquinoxaline (cas: 148231-12-3Application of 148231-12-3).

5,8-Dibromoquinoxaline (cas: 148231-12-3) belongs to pyrazine derivatives. Pyrazine heterocycles and their benzo derivatives possess many interesting properties, including chemical reactivity profiles, and have diverse applications in total synthesis, medicine, chemical biology, materials, dyes, and imaging. Substituted pyrazines have been found as subunits of multiple synthetically constructed therapeutic agents, as well as several natural products.Application of 148231-12-3

Referemce:
Pyrazine – Wikipedia,
Pyrazine | C4H4N2 – PubChem