Abstract: Acridine derivatives,e. g. amsacrine^[1] and antimicrobial^[2,3] drugs,are known as anticancer drugs from the point of view of biology and 10,10’-dialkyl-9,9’-biacridinium nitrates are called lucigenin which were used as reagent in chemical analysis^[4,5] The solutions of 10. 10’-dialkyl-9,9’-bialkylacridens have strong fluorescence and it is found that the bialkylacridens can be oxidized easily by the air,so they may be used der to investigate the charge donation ability of the biacridens,ten 10,10'-dialkyl-9,9'-biacridens were synthesized by the reduction of corresponding N-alkylacridones with Zn powder and hydrogen chloride and ethyl alcohol.

Key words: 10,10’-dialkyl-9,9’-biacriden, charge transfer complexes, UV, ionization potential