Guest-induced Assembly of Bis(thiosemicarbazonato) Zinc(II) Coordination Nanotubes
Brett M Paterson, Keith F White, Jonathan M White, Brendan F Abrahams, Paul S Donnelly
Angewandte Chemie International Edition | Wiley | Published : 2017
A ZnII complex of the dianionic tetradentate ligand formed by deprotonation of glyoxal‐bis(4‐phenyl‐3‐thiosemicarbazone) (H2gtsp) is a [3+3] trinuclear triangular prism. Recrystallization of this complex in the presence of either CO2, CS2, or CH3CN leads to the formation of [4+4] open‐ended charge‐neutral tetranuclear coordination nanotubes, approximately 2 nm in length and with internal dimensions large enough to accommodate linear guest molecules, which serve to template their formation. Upon removal of the templating molecules the nanotubes demonstrated reversible sorption of CO2 with an isosteric enthalpy of sorption of 28 kJ mol−1 at low loading.
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Awarded by Australian Research Council
B.M.P. is supported by a Victorian Postdoctoral Research Fellowship (Victorian Government) and an ARC DECRA (Australian Research Council). P.S.D., who is an ARC Future Fellow, acknowledges the support of the Australian Research Council. B.F.A. acknowledges the support of the Science Industry Endowment Fund. Prof. Ken Ghiggino is thanked for his assistance with the solid-state fluorescence measurements.