Convenient synthesis and purification of [Bu<inf>4</inf>N]<inf>2</inf>[Ru(4-carboxy-4-carboxylate-2,2′-bipyridine)<inf>2</inf>(NCS)<inf>2</inf>]: A landmark DSC Dye

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Journal Article
Australian Journal of Chemistry, 2008, 61 (6), pp. 405 - 408
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We present here a convenient synthesis of the landmark dye-sensitized solar cell dye [Bu4N]2[Ru(4-carboxy-4-carboxylate-2,2?- bipyridine)2(NCS)2] (N719). Key to this synthetic procedure is the protection of the carboxyl functionalities with iso-butyl ester groups. This strategy allows the use of silica chromatography to remove the less efficient S-bound isomers and significantly reduces the time and difficulty of the synthesis. © CSIRO 2008.
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