Bispyrrolotetrathiafulvalene-containing [2]catenanes

作者：Tomesi Michael R; Stoddart J Fraser^*

来源：Journal of Organic Chemistry, 2007, 72(24): 9335-9338.

DOI：10.1021/jo7013746

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Two [2]catenanes incorporating bispyrrolotetrathiafulvalene (BPTTF) and weaker aryl donors, hydroquinone (HQ) and 1,5-dioxynaphthalene (DNP), respectively, have been prepared and characterized. These [2]catenanes show a predominant amount (>95 : 5) of the co-conformation in which either the HQ or the DNP unit is encircled by a tetracationic cyclophane, cyclobis(paraquat-p-phenylene) (CBPQT(4+)), contrary to what is observed in systems based on the parent tetrathiafulvalene (TTF). These new [2]catenanes act effectively as molecular switches which are always configured in the "on" state.

• 出版日期2007-11-23