New Polypyridyl Ruthenium(II) Sensitizers Carrying Triphenylamine Units and Their Application in Dye Sensitized Solar Cells

摘要

Two new polypyridyl ruthenium(II) sensitizers (D1, D2) containingtriphenylamine units were synthesized and characterized by 1H NMR and FT-IRspectra. Photophysical properties measurements show that two compounds hadstronger absorption in visible light region with molar extinction coefficientsexceeding 2.40×10~3 m~2.mol~(-1). Electrochemical properties measurements reveal thattwo sensitizers possess proper LUMO and HOMO levels, which are advantageous toelectron injection to titania film and fast dyes regeneration. The properties of D1 andD2 indicate that two compounds are candidates for the application in DSSC asphoto-sensitizers.