Ying Hu, B. Wex, M. Perkovic
Feb 25, 2008
Citations
0
Influential Citations
16
Citations
Journal
Tetrahedron
Abstract
Abstract Light-emitting fluorophores 1–10b based on aryl substituted benzo[1,2-b:4,3-b′]dithiophenes (BDT) and trithia[5]helicenes (T5H) have been synthesized using various combinations of Suzuki coupling, the Wittig, or McMurry reaction, and subsequent photocyclization of the dithienylethenes thus obtained. Photophysical properties of the helical compounds end-capped with different electron-rich and electron-deficient aryl moieties thus resulting were evaluated. Photocyclization of a dithienylethene derivative 10a was investigated, and the X-ray crystal structure of dinaphthyl-substituted BDT (4) was obtained. With this series of compounds 1–10b, we demonstrate that the optical properties of all of the new compounds, and by extension many conjugated materials, can be tuned over the entire blue range (400–480 nm).