Novel Ruthenium Sensitizers Having Different Numbers of Carboxyl Groups for Dye-Sensitized Solar Cells: Effects of the Adsorption Manner at the TiO<sub>2</sub> Surface on the Solar Cell Performance
作者:Hironobu Ozawa、Takahito Sugiura、Ryosuke Shimizu、Hironori Arakawa
DOI:10.1021/ic501479p
日期:2014.9.2
novel ruthenium sensitizers having multiple carboxyl groups ((TBA)[Ru4′-(3,4-dicarboxyphenyl)-4,4″-dicarboxyterpyridine}(NCS)3] (TUS-21) and (TBA)[Ru4′-(3-carboxyphenyl)-4,4″-dicarboxyterpyridine}(NCS)3] (TUS-37); TBA = tetrabutylammonium) have been synthesized as improved model sensitizers for the previously reported ruthenium sensitizer TUS-20 ((TBA)[Ru4′-(3,4-dicarboxyphenyl)terpyridine}(NCS)3])
两种具有多个羧基的新型钌敏化剂((TBA)[Ru 4'-(3,4-二羧基苯基)-4,4″-二羧基叔吡啶}(NCS)3 ](TUS-21)和(TBA)[Ru 已合成4'-(3-羧基苯基)-4,4''-二羧基联吡啶}(NCS)3 ](TUS-37); TBA =四丁基铵)作为先前报道的钌敏化剂TUS-20((TBA )[Ru 4'-(3,4-二羧基苯基)三吡啶}(NCS)3 ])。与TUS-20相比,两个MLCT波段的最大吸收量以及TUS-21和TUS-37的吸收起始点移到了大约30 nm的更长波长处通过将羧基引入到三联吡啶配体的每个末端吡啶环上。TUS-21和TUS-37表现出与TiO 2表面非常相似的吸附行为,并且发现该吸附行为与TUS-20不同。ATR-IR测量表明,TUS-21和TUS-37通过在苯环的3位和三联吡啶配体的一个末端吡啶环上使用两个羧基与TiO 2表面结合,而TUS