Photophysical properties of a crown ether-bearing [60]fulleropyrrolidine

The photophysical properties of the first crown ether-bearing [60]fulleropy rrolidine (CFP) have been studied. The absorption and fluorescence spectra are hypsochromically shifted by metal ions complexation via intramolecular electron transfer which is confirmed by AMI computation. The third-order op tical nonlinearity of CFP is measured by time-resolved degenerate four-wave -mixing experiment. The third-order optical susceptibility chi((3)) Of CFP is 8.97 x 10(-14) esu. The nonlinear optical temporal response is second-or der exponential, the fast process is determined as 120 ps.