Abstract
Design and synthesis of charged porphyrin dimers for polyoxometalate recognition
Highlights
Polyoxometalates (POMs) have been widely studied in photovoltaic applications and in the design of electroactive materials despite their absorption in the 200–400 nm region that is a significant drawback regarding their efficiency
Supramolecular chemistry and its toolbox of noncovalent interactions combined with host–guest principles of molecular recognition provide tools for the design of hosts adapted for the binding of diversely shaped polyoxomolybdates
In an attempt to provide a rational approach to the formation of well-defined porphyrin/POM hybrids, charged bisporphyrinic receptors have been synthesized and used in binding studies of Lindqvist-type POMs
Summary
Polyoxometalates (POMs) have been widely studied in photovoltaic applications and in the design of electroactive materials despite their absorption in the 200–400 nm region that is a significant drawback regarding their efficiency. Coordination chemistry has been employed taking advantage of the Lewis acidity of metal ions incorporated in the porphyrin core [9,10], due to the highly negative charge of the POMs, electrostatic interactions have emerged as an efficient self-assembly driving force in the field of porphyrin/POM hybrids [11,12,13]. Despite their performances in photoinduced processes, materials built on electrostatic interactions are structurally poorly defined [14,15,16] which limits the scope of optimization based on molecular properties. Well-defined species provide information on interactions at the molecular scale and a reliable insight on the performance of the resulting molecular materials
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