Spirooxazine Photoisomerization and Relaxation in Polymer Matrices
Table 1
Spectral parameters of SPO-7OH in polymers matrices.
Sample
Temperature (K)
(nm)
(a.u.)
(s)
(a.u.)
(s)
SPO-7OH P(MMA-BMA)
303
613
0.569
200
0.167
200
SPO-7OH P(MMA-BMA)
313
613
0.402
200
0.078
200
SPO-7OH P(MMA-BMA)
323
613
0.020
200
0.015
200
SPO-7OH P(MMA-BMA)
333
613
0.084
200
0.000
80
SPO-7OH PVP
303
610
0.194
200
0.115
200
SPO-7OH PVP
313
610
0.170
200
0.110
200
SPO-7OH PVP
323
610
0.126
200
0.083
200
SPO-7OH PVP
333
610
0.084
200
0.058
200
: absorbance of merocyanine measured after time during illumination with light; : absorbance of merocyanine measured after time during thermal relaxation.