Author/Authors :
Kim، نويسنده , , So Yeon and Lee، نويسنده , , Gyu Yeon and Han، نويسنده , , Sang-Yeop and Lee، نويسنده , , Minyung، نويسنده ,
Abstract :
On the basis of picosecond fluorescence lifetime measurements, we report the fluorescence quenching dynamics of azulene and 2-haloazulenes (halogen=Cl, Br, and I) in cyclohexane by CCl4 in the S2 electronic state. It has been observed that azulene fluorescence is efficiently quenched by carbon tetrachloride with a diffusion-limited rate constant of 8.1×109 M−1 s−1, while 2-haloazulenes do not show fluorescence quenching by CCl4.
