AGGREGATION OF CHLOROPHYLL & B IN POLYMER FILMS

荧光发射各向异性、r和平均寿命 4-dimethylamino-omega-diphenylphosphinyl-trans-styrene(DDPS)是 在20至80xC的不同温度下在正丁醇中测量 单光子和双光子激发。当提高温度时， 寿命从32ps下降到12ps。然而，各向异性值， 保持恒定(对于单光子和双光子激发，分别为0.315和0.445， 分别)，并被发现与温度无关。对于DDPS 在-5xC的甘油中，在此过程中不会发生旋转扩散 激发态寿命，极限发射各向异性为R0 =0.382，对于单光子和双光子激发，R0=0.545， 分别与基波辐射差别很小 各向异性Rf=2/5和Rf=4/7。Rf-R0的微小差异可以 是由于DDPS分子激发后发生的振动 由于最初的震惊。

Fluorescence emission anisotropies, r, and mean lifetimes of 4-dimethylamino-omega-diphenylphosphinyl-trans-styrene (DDPS) were measured in n-butanol at different temperatures from 20 to 80xC for one- and two-photon excitation. When increasing the temperature, the lifetime decreased from 32 to 12 ps. The anisotropy values, however, remained constant (0.315 and 0.445 for one- and two-photon excitation, respectively) and were found to be temperature independent. For DDPS in glycerol at -5xC, where rotational diffusion does not occur during the excited state lifetime, the limiting emission anisotropies were r0 = 0.382 and r0 = 0.545 for one- and two-photon excitation, respectively, very little differing from the fundamental emission anisotropies rf = 2/5 and rf= 4/7. The small differences rf - r0 can be due to vibrations performed after excitation by the DDPS molecule as a result of the initial shock.