Author/Authors :
Oda، نويسنده , , Mitsunori and Ogura، نويسنده , , Kazutaka and Thanh، نويسنده , , Nguyen Chung and Kishi، نويسنده , , Sayaka and Kuroda، نويسنده , , Shigeyasu and Fujimori، نويسنده , , Kunihide and Noda، نويسنده , , Tomonori and Abe، نويسنده , , Noritaka، نويسنده ,
Abstract :
The title azaazulene 3 was synthesized either by reaction of tropone with N-{(2-pyridyl)acetyl}pyridinium iodide in the presence of ammonium acetate or by palladium-catalyzed cross-coupling between 2-halo-1-azaazulene and 2-substituted pyridine. The compound shows relatively stronger basicity compared with 2,2′-bipyridyl. While 3 showed no emission from the S1 state but from the S2 state like azulene does, the protonated species of 3 exhibited emission from the S1 state. Cationic metal-dependent absorption and emission relating to complexation were also studied.
Keywords :
emission spectrum , cross-coupling reaction , UV–vis absorption spectrum , Metal complexation , Basicity
