Ferrocenylethynyl-terminated　derivatives　8-12　have　been　synthesized　and　characterized　by　electrochemistry　and　UV/Vis　spectroscopy.　The　electrochemical　and　photophysical　studies　indicate　that　the　electronic　communication　in　ferrocenylethynyl-substituted　derivatives　is　strongly　influenced　by　the　substituted　position　of　the　ferrocenylethynyl　moiety.　In　situ　electrochemical　oxidation　or　chemical　oxidation　caused　a　characteristically　weak　ligand-to-metal　charge-transfer　(LMCT)　band　to　appear　at　700-1000　nm.　Subsequent　electrochemical　reduction　or　chemical　reduction　recovered　the　most　of　the　original　curve　and　the　color　of　the　solution　as　well.　Among　the　derivatives,　compound　8　exhibits　the　highest　cis/trans　molar　ratio　(64:　36)　in　the　photostationary　state　(PSS)　upon　light　irradiation　at　365　nm.　Compound　8　exhibits　excellent　fatigue　resistance　and　reversibility　under　several　repeated　reversible　isomerization　cycles.