Fullerols of C 60 and of C 70 \ [C 60 (OH)\-\%n\%, C 70 (OH)\-\%m\%], water\|soluble fullerene derivatives, unlike some other fullerene derivatives (such as C 60 (C\-4H\-6O), C 60 (C\-3H\-7N) and C 60 [C(COOEt)\-2]\-\...Fullerols of C 60 and of C 70 \ [C 60 (OH)\-\%n\%, C 70 (OH)\-\%m\%], water\|soluble fullerene derivatives, unlike some other fullerene derivatives (such as C 60 (C\-4H\-6O), C 60 (C\-3H\-7N) and C 60 [C(COOEt)\-2]\-\%x\%), do not result in excited triplet state but in ionization via monophotonic process in aqueous solutions with 248 nm laser. The quantum yields of formation of hydrated electron ( Φ e - ) are determined to be 0.08 and 0.11 for fullerols of C 60 and of C 70 respectively at room temperature (ca. 15℃) with KI solution used as reference. By laser flash photolysis and oxidation of sulfate radical anion SO -· \-4, the fullerol radical cation or neutral radical of C 60 is confirmed to be existent and the transient absorption spectra of fullerol radical cation of C 70 are observed for the first time.展开更多
文摘Fullerols of C 60 and of C 70 \ [C 60 (OH)\-\%n\%, C 70 (OH)\-\%m\%], water\|soluble fullerene derivatives, unlike some other fullerene derivatives (such as C 60 (C\-4H\-6O), C 60 (C\-3H\-7N) and C 60 [C(COOEt)\-2]\-\%x\%), do not result in excited triplet state but in ionization via monophotonic process in aqueous solutions with 248 nm laser. The quantum yields of formation of hydrated electron ( Φ e - ) are determined to be 0.08 and 0.11 for fullerols of C 60 and of C 70 respectively at room temperature (ca. 15℃) with KI solution used as reference. By laser flash photolysis and oxidation of sulfate radical anion SO -· \-4, the fullerol radical cation or neutral radical of C 60 is confirmed to be existent and the transient absorption spectra of fullerol radical cation of C 70 are observed for the first time.
