Research Article

Resonance Two-Photon Ionization of Diarylethene in the Presence of Cyclodextrin

Table 1

Ionization quantum yields and fluorescence lifetimes of DE (6.1 × 10−5 M) in the presence of α-CD (10−3 or 5 × 10−3 M), β-CD (10−3 M), m-β-CD (10−3 or 5 × 10−3 M), or γ-CD (10−3 or 5 × 10−3 M) in H2O/ACN (9 : 1).

CDmM (ns) (ns) (ns) (%) (%) (%)CHI (%)

-CD100.30.59.7801641.060.8
-CD500.42.816672671.030.6
-CD100.73.732722621.000.8
m -CD100.53.71990911.040.6
m -CD501.03.720514451.011.1
-CD100.74.43391811.010.9
-CD500.83.828891011.020.7