Based on the mixed phthalate (phth) and adipate (ad), [Nd(ad)(phth)(HO)] (I) and [Ln(ad)(phth)(HO)] (Ln = Eu (II), Gd (III), Tb (IV), Dy (V), Er (VI), Tm (VII), 1Eu:10Tb (VIII), 3Eu:10Tb (IX), and 5Eu:10Tb (X)) were synthesized and characterized. Complexes VIII-X show excellent ratiometric temperature sensing behavior in physiological and higher temperature ranges (303-423 K) rendered by the Tb-to-Eu energy transfer process. The efficiency of the process as illustrated through the lifetime measurements depends on both the Eu:Tb mole ratio and the temperature. The performance of X in terms of relative sensitivity ( S), temperature resolution, and measurement repeatability were determined, revealing the maximum S ( S) of 1.21%·K at 303 K with reliable temperature resolution and excellent repeatability.

A unique example of a hydrogen-bonded ionic solid with a porosity of 80 %, [Co(H2O)6]3 [Co2Au3 (d-pen-N,S)6]2 (1; d-H2 pen=d-penicillamine), composed of [Co(H2O)6](2+) cations and [Co2Au3 (d-pen-N,S)6 ](3-) anions, is reported. Solid 1 was kinetically produced and was then transformed stepwise into two more thermodynamically stable solids with lower porosities, [Co(H2O)4 ][Co(H2O)6]2 [Co2Au3 (d-pen-N,S)6]2 (2) and [Co(H2O)4]3 [Co2 Au3 (d-pen-N,S)6]2 (3), through the coordination of the free carboxylate groups in [Co2Au3 (d-pen-N,S)6](3-) to Co(II) centers. Solids 1-3 were structurally characterized, and the selective adsorption of small molecules into their pores was investigated.

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Six new lanthanide metal organic complexes, i.e. [La2(NO2-BDC)3(H2O)4] (1)[Ln(L)0.5(NO2-BDC)(H2O)] • 3H2O (Ln = Eu (2), Tb (3), Dy (4) and Ho (5); L = BDC 2or BDC 2-/NO2-BDC 2-) and [Tm(NO2-BDC)1.5(H2O)]•H2O (6), have been synthesized using mixed ligands of benzene-1,4-dicarboxylic acid (H2BDC) and the in situ generated 2-nitrobenzene-1,4-dicarboxylic acid (NO2-BDC 2-). Single crystal structures and topologies of the complexes are presented based on the single crystal X-ray diffraction and spectroscopic data.Whilst the structures of 1 and 6 contain negligible voids, the frameworks of 2-5 are microporous in nature and stable upon the removal of all the water molecules from the structures and thermal treatment to over 400 C. Based on the study of 2, significant adsorption capacities for carbon dioxide (95 cm 3 •g -1 or 4.2 mmol•g -1 ) and hydrogen (79 cm 3 •g -1 or 4 mmol•g -1 ), as well as the remarkable stability of the framework upon the sorption/desorption experiments are revealed.

A unique pH-controlled synthesis of two metallosupramolecular structures from CoAu complex anions and Zn cations is reported. A dense coordination polymer (porosity ∼13%) was formed at a pH of 5.0, whereas a porous ionic framework (porosity ∼61%) that selectively adsorbs CO and HO was created when the pH was adjusted to 5.5.