A series of uranyl-organic frameworks (UOFs), {[(UO2)2(H2TTHA)(H2O)]·4,4'-bipy·2H2O}n (1), {[(UO2)3(TTHA)(H2O)3]}n (2), and {[(UO2)5(TTHA) (HTTHA)(H2O)3]·H3O}n (3), have been obtained by the hydrothermal reaction of uranyl acetate with a flexible hexapodal ligand (1,3,5-triazine-2,4,6-triamine hexaacetic acid, H6TTHA). These compounds exhibited three distinct 3D self-assembly architectures as a function of pH by single-crystal structural analysis, although the used ligand was the same in each reaction. Surprisingly, all of the coordination modes of the H6TTHA ligand in this work are first discovered. Furthermore, the photoluminescent results showed that these compounds displayed high-sensitivity luminescent sensing functions for nitrobenzene. Additionally, the surface photovoltage spectroscopy and electric-field-induced surface photovoltage spectroscopy showed that compounds 1-3 could behave as p-type semiconductors.

Based on the luminescence properties of lanthanide complexes, we found that very fast and extremely sensitive optical detection of thiamines can be achieved for the first time.

The antimicrobial activity of a series of rare earth complexes was investigated in detail.

= 5-((4-carboxybenzyl)oxy)isophthalic acid, H 4 L 2 = 4,4'-oxydiphthalic acid, and H 2 L 3 = 4,4'-((6-chloro-1,3,5-triazine-2,4-diyl)bis(azanediyl))dibenzoic acid}, have been designed and synthesized under solvothermal and hydrothermal reaction conditions. All of these ligands are firstly used in the syntheses of uranyl hybrid materials. We investigated the main factors on the uranyl hydrolysis systematically and discussed the in situ reaction mechanism in detail. Furthermore, physical properties of these uranyl complexes are dependent on structural variations, such as unusual solvent-impressionable fivepeak photoluminescence for 2, surface photoelectric behavior as potential p-type semiconductors for 2 and 3, and the remarkable superiorities toward selective removal of dye pollutant for the anionic framework 1 compared with the neutral ones 2 and 3. Results and Discussion SynthesisWith this purpose of exploring the porous UOFs, a series of aromatic polycarboxylate ligands were employed to combine [a] J.

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