Cu(3)(BTC)(2) with an incorporated Keggin polyoxometalate was demonstrated to be stable under steaming conditions up to 483 K, while the isostructural HKUST-1 degrades and transforms into [Cu(2)OH(BTC)(H(2)O)](n)·2nH(2)O from 343 K onwards.

Self-supported oligo-layered ZnAlEu LDH nanotubes (∅ 20 nm) self-assemble upon controlled hydrolysis of the metal ions (Zn, Al, Eu) in the presence of 1,3,5-benzenetricarboxylate anions and non-ionic worm-like micelles. Their high surface area and easily accessible cylindrical mesopores (175 m g; 0.75 cm g) facilitate interaction with 5 nm CdTe quantum dots, enhancing the overall luminescence behavior.

HKUST-1 is one of the popular metal-organic frameworks (MOFs). The formation of this MOF is significantly accelerated by adding Keggin polyoxometalate anions to the synthesis solution. In this paper the chemistry behind this observation was investigated. Upon addition of Keggin type H 3 PW 12 O 40 heteropolyacid the speciation of Cu 2+ cations in ethanol : H 2 O mixture drastically changes. Combining EPR and XANES measurements with accurate pH measurements and prediction of Cu 2+ hydrolysis provides strong evidence for surface induced hydrolysis and consequent dimerisation of monomeric Cu 2+ species on Keggin ions in acidic conditions. This enables paddle wheel formation, hence explaining the instantaneous precipitation of Cu 3 (BTC) 2 at room temperature and the systematic encapsulation of Keggin ions in its pores.

X‐ray spectroscopy: Substoichiometric encapsulation of polyoxometalate ions into a metal–organic framework results in a fully functional cation exchanger with accessible porosity. Cu2+ cations compensating the charge of [PW12O40]3− in the as‐synthesized material can be exchanged with cations such as Na+ and Eu3+. When exchanged with Eu3+, the material appears bright red under UV irradiation (see figure).