Title of article
Synthesis and spectroscopic study of diphenylamino-substituted phenylene-(poly)ethynylenes: remarkable effect of acetylenic conjugation modes
Author/Authors
Fang، نويسنده , , Jing-Kun and An، نويسنده , , De-Lie and Wakamatsu، نويسنده , , Kan and Ishikawa، نويسنده , , Takeharu and Iwanaga، نويسنده , , Tetsuo and Toyota، نويسنده , , Shinji and Matsuo، نويسنده , , Daisuke and Orita، نويسنده , , Akihiro and Otera، نويسنده , , Junzo، نويسنده ,
Issue Information
هفته نامه با شماره پیاپی سال 2010
Pages
4
From page
917
To page
920
Abstract
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.
Journal title
Tetrahedron Letters
Serial Year
2010
Journal title
Tetrahedron Letters
Record number
1871046
Link To Document