A new compound of merocyanine dye based on [60]fullerene unit (2) was designed, synthesized and characterized by MALDI-TOF, FT-IR, NMR and UV-vis spectra and the allochroic processes were also studied. Compound 2 had allochroic processes in polar solvents such as methanol or DMF. Acids or alkali such as acetic acid or NaOC_2H_5 also showed apparent influence on the allochroic process. The photochroic process was much slower than that of merocyanine dye itself due to the influence of [60] fullerene unit on the merocyanine moiety.

Key words: C60, MS, 1HNMR, IR, STRUCTURE CHARACTERISTICS, PHOTOCHROMISM