Phosphaalkenes in pi-conjugation with acetylenic arenes.
Phosphaalkene inclusion at the periphery of acetylenic arenes results in decreased band gaps of the title compounds as verified by spectroscopic and electrochemical techniques. The electronic coupling between two 1-phosphahex-1-ene-3,5-diyne units is mediated by all para-substituted arenes and increases from 4b to 4d.
Geng
Xue-Li
XL
Department of Photochemistry and Molecular Science, Angstrom Laboratories, Uppsala University, Box 523, 75120 Uppsala, Sweden.
Hu
Qi
Q
Schäfer
Bernhard
B
Ott
Sascha
S