Author/Authors :
G. Burdzinski، نويسنده , , G and Maciejewski، نويسنده , , A and Buntinx، نويسنده , , G and Poizat، نويسنده , , P. Toele، نويسنده , , P and Zhang، نويسنده , , H and Glasbeek، نويسنده , , M، نويسنده ,
Abstract :
We have studied for the first time the photophysics of the thioketone, 4H-1-benzopyrane-4-thione (BPT), in water and deuterated water, by using femtosecond fluorescence up-conversion and transient absorption spectroscopies. We propose that the S2-state deactivation occurs in the hydrogen-bonded BPT–water complex. The lifetime of the complex in the S2 state is found to be as short as 1.0 ± 0.1 ps in H2O, and 2.2 ± 0.1 ps in D2O.
