Enhanced bi-stability in a ruthenium alkynyl spiropyran complex

M.C. Walkey, Lindsay Byrne, Matthew Piggott, Paul Low, George Koutsantonis

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© The Royal Society of Chemistry 2015. The inclusion of a ligated ruthenium moiety to ethynyl spiropyran, 5′-ethynyl-1′,3′,3′-trimethyl-6-nitrospiro[chromene-2,2′-indoline], has been shown to increase the lifetime of the ring-opened merocyanine form twentyfold. Calculations suggest that the higher barrier to thermal reversion of the merocyanine form of the metal alkynyl complex arises from the capacity for greater delocalisation of charge consequent of the presence of the ruthenium moiety. The complex may provide a different switching mechanism to the 5,5′-dithienylperfluorocyclopentene electrode decoupling seen previously.
Original languageEnglish
Pages (from-to)8812-8815
JournalDalton Transactions
Issue number19
Early online date15 Apr 2015
Publication statusPublished - 21 May 2015


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