1209008-83-2Relevant academic research and scientific papers
Synthesis and spectroscopic study of diphenylamino-substituted phenylene-(poly)ethynylenes: remarkable effect of acetylenic conjugation modes
Fang, Jing-Kun,An, De-Lie,Wakamatsu, Kan,Ishikawa, Takeharu,Iwanaga, Tetsuo,Toyota, Shinji,Matsuo, Daisuke,Orita, Akihiro,Otera, Junzo
, p. 917 - 920 (2010)
A series of diphenylamino-substituted phenylene-(poly)ethynylenes were successfully synthesized by a combination of Sonogashira coupling and double elimination protocol of β-substituted sulfones. When UV-light was irradiated, the amino-substituted phenylene-(poly)ethynylene emitted strong luminescence. The emission underwent a large bathochromic shift in polar solvent because of stabilization of their charge-separated excited states. Analyses of fluorescence life times of aminoacetylenes revealed that radiationless process was suppressed in the polar solvent CH2Cl2, resulting in high quantum yields.
