Hosting Various Guests Including Fullerenes and Free Radicals in Versatile Organic Paramagnetic bTbk Open Frameworks
datasetposted on 05.02.2014, 00:00 by David Bardelang, Michel Giorgi, Virginie Hornebecq, Anatoli Stepanov, Micaël Hardy, Egon Rizzato, Valérie Monnier, Md. Badruz Zaman, Gordon Chan, Konstantin Udachin, Gary Enright, Paul Tordo, Olivier Ouari
The dinitroxide bis(TEMPO) bisketal (bTbk) was shown to crystallize into open frameworks whose structures were determined by single-crystal X-ray diffraction. We show that bTbk can be used as a supramolecular building block for the hosting of a plethora of guests inside the 1D channels of its paramagnetic framework, including other radicals such as TEMPO or 2-azaadamantane-N-oxyl. C60 and C70 were also found to be easily included in this open framework during its crystallization. This resulted in well-defined, nanostructured assemblies of composite radical crystals (bTbk/toluene/C60 or C70) or (bTbk/toluene/TEMPO) by a very simple dissolution/crystallization process with tunable guest content. Selective C60 extraction was also demonstrated directly from fullerene soot.