A laser induced luminescence study of fullerene[70]: The significance of cage size, matrix environment and multiply addends.

We show that the absolute frequency position of the O[sup0][sub0] band in C[sub60] and C[sub70] in several different matrices/environments is altered by less than 125 cm[sup-1]. In contrast, the effect of different environmental conditions for a multi-derivatised (C[sub70]Ph[sub10]) fullerene is shown to be very pronounced (c.a. 2500cm[sup-1]) noting also that the presence of 10 phenyl addends greatly perturbs the fullerene cage also up to c.a. 5000 cm[sup-1] relative to C[sub70]. The effect of different addends upon [70]fullerene has been studied using phenyl and fluorophenyl addends, monitored by laser-induced luminescence. Different spectral characteristics are observed, thereby demonstrating that the fullerene cage is sensitive to the type of addend present. [ABSTRACT FROM AUTHOR]