中文摘要：

利用激光光解装置检测了C60-地塞米松（C60-DE）的苯溶液在355nm激光照射下产生的激发三重态,^3C60-DE^＊出现四个吸收峰,分别位于700、440、350和310nm.在330nm处观察到了它的漂白吸收最大值,这与其基态吸收最大值相对应.^3C60-DE^＊能够将能量转移给O2分子而淬灭.与^3C60^＊相比,^3C60-DE^＊的三重态-三重态（T-T）淬灭速率常数减小（^3C60^＊为（5.03±1.31）×10^9L·mol^-1·s^-1,^3C60-DE^＊为（3.53±0.87）×10^9L·mol^-1·s^-1）,而寿命增加了（^3C60^＊为（12.0±2.6）μs,^3C60-DE^＊为（18.0±3.3）μs）,这可能是C60分子上连接了地塞米松分子后减小了C60球之间碰撞的几率所致.

英文摘要：

Laser flash photolysis technique was employed to characterize the triplet excited state behavior of C60- dexamethasone （C60-DE） in benzene. The time-resolved triplet-triplet （T-T） difference absorption spectrum of ^3C60-DE^＊ with optical excitation （355 nm laser pulse） was recorded. The spectrum of ^3C60-DE^＊ exhibited maxima at 700, 440, 350, and 310 nm. The bleaching maximum observed at 330 nm coincides well with the ground-state maximum in this region, ^3C60-DE^＊ could be quenched by oxygen. Compared with ^3C60^＊, the T-T annihilation rate constant of ^3C60-DE^＊ deduced （（5.03±1.31）×10^9L·mol^-1·s^-1 for ^3C60-DE^＊ and （3.53±0.87）×10^9L·mol^-1·s^-1 for ^3C60-DE^＊）, and the life time of ^3C60-DE^＊ increased （（12.0＋2.6） p,s for ^3C60^＊, （18.0±3.3）μs for ^3C60-DE^＊）. The reason may be that the connection of dexamethasone decreased the colliding probability of the C60 ball.