55453-06-0Relevant articles and documents
Effect of conjugation on the optoelectronic properties of pyrazine-based push-pull chromophores: Aggregation-induced emission, solvatochromism, and acidochromism
Park, Hyung-Ha,Meti, Puttavva,Gong, Young-Dae
, (2021)
A series of pyrazine-based bipodal D-π-A-π-D and D-π-A-π-A molecules with multi-stimuli response have been synthesized via Suzuki and Sonogashira cross-coupling reactions. We present a joint theoretical and experimental study to elucidate structure-property relationship of these push-pull chromophores. The modification of the end-capped donor-acceptor units and the extension of π-conjugation are key factors in tuning their optical, thermal and electrochemical properties. Depending on the different electron-donating substituents, the chromophores emit blue to orange fluorescence. The solvent dependent emission was observed and their Dimroth-Reichardt plots show a linear correlation. The aggregation-induced study shows enhanced emission in aggregates. Our work has elucidated that these small structural isomers can be utilized to develop a promising multi-stimuli responsive fluorescent materials.
Highly efficient synthesis of 2,5-disubstituted pyrazines from (Z)-β-haloenol acetates
Chen, Zhengwang,Ye, Dongnai,Xu, Guohai,Ye, Min,Liu, Liangxian
supporting information, p. 6699 - 6702 (2013/10/01)
A highly efficient synthesis of a wide range of 2,5-disubstituted pyrazines from (Z)-β-haloenol acetates is described. The reactions are conducted under convenient conditions and provide products with excellent regioselectivity in moderate to excellent yields with a broad substrate scope, including a variety of aromatic and aliphatic haloenol acetates.