A series of metal-organic gels (MOGs) were formed in CH 3 OH-CHCl 3 solution based on L1 and Pd(COD)(NO 3 ) 2 (L1 ) 4,4′,4′′-(1,3,5-triazine-2,4,6-triyl)tris(N-(pyridin-3-ylmethyl)benzamide, COD ) cycloocta-1,5-diene) at different ratios. FT-IR, NMR, and fluorescence spectroscopy show that hydrogen bonding, π-π interaction, and coordination bonding are involved in the gel formation. The morphologies of these metallogels are Pd/L1 ratio dependent ranging from spheres to fibers. The fibrous networked gel shows higher catalytic activity in Suzuki-Miyaura coupling reaction than the spherical gel, acting as recyclable Pd(II) catalyst supported by the air-stable networked gel/xerogel.

Hepatocellular carcinoma (HCC) is the predominant subject of liver malignancies which arouse global concern. Advanced studies have found that long noncoding RNAs (lncRNAs) are differentially expressed in HCC and implicate they may play distinct roles in the pathogenesis and metastasis of HCC. However, the underlying mechanisms remain largely unclear. In this review, we summarized the functions and mechanisms of those known aberrantly expressed lncRNAs identified in human HCC tissues. We hope to enlighten more comprehensive researches on the detailed mechanisms of lncRNAs and their application in clinic, such as being used as diagnostic and prognostic biomarkers and the targets for potential therapy. Although studies on lncRNAs in HCC are still deficient, an improved understanding of the roles played by lncRNAs in HCC will lead to a much more effective utilization of those lncRNAs as novel candidates in early detection, diagnosis, prevention and treatment of HCC.

Reaction of a rigid triangular ligand 2,4,6-tris[4-(1H-imidazole-1-yl)phenyl]-1,3,5-triazine (TIPT) with Cd2+ ions affordedrare non-interpenetrating CdI2-type networks which display high thermostability and potential porosity; the topological character of the CdI2-type networks have been analyzed in comparison with three common uniform (4,4), (6,3) and (3,6) plane nets.

Two asymmetric ligands, 2-(3-pyridyl)benzimidazole (3-PyBim) and 2-(4-pyridyl)benzimidazole (4-PyBim) which are positional isomers and versatile to provide both coordination donors (NPy and NBim) and hydrogen bonding sites (NBim and HNBim), were utilized to synthesize a series of transition metal complexes, namely [Ag2(3-PyBim)2](X)2 (X = BF4 – (1), NO3 – (2), ClO4 – (3), CF3SO3 – (4)), [Ag(4-PyBim)](NO3)·(H2O) (5), [Cu(3-PyBim)2(H2O)2](ClO4)2 (6), [Co(3-PyBim)2(H2O)4](NO3)2·(H2O)4(7), [Cu(4-PyBim)2(Cl)2](H2O)2 (8), [Zn(4-PyBim)2(H2O)2(NO3)2] (9), and [Cu2(3-PyBim)2(OAc)4] (10). These simple complexes show diversified intermolecular interaction modes and can behave as basic structural units to be assembled into higher dimensional structures via dimension increasing. In complexes 1–4, every two Ag (I) atoms are connected by two 3-PyBim ligands to form a discrete [Ag2(PyBim)2]2+ cyclic unit, while in complex 5, Ag (I) atoms are bridged by 4-PyBim ligands into a one-dimensional “zigzag” chain. This is due to positional isomerization of the ligands 3-PyBim and 4-PyBim, but they both display the similar end-to-end coordination mode. In contrast, these two ligands show the end-on coordination mode in complexes 6–9 with the Cu (II), Co (II), or Zn (II) ions taking on square or octahedral coordination geometries to form monomeric structural units containing one metal and two ligands, as well as additional water molecules or counteranions wherever necessary. In complex 10, the well-known dimetal paddle-wheel motif is formed with two Cu (II) ions adopting a square pyramidal geometry, but the two 3-PyBim ligands also take the same end-on coordination mode as that in complexes 6–9. The different coordination modes of the ligands in together with the influences from the counteranions play essential roles to propagate these basic structural units into 1D (1, 10), 2D (2–6, 8), or 3D (7, 9) frameworks via hydrogen bonding and other weak interactions. Thermogravimetric properties of some complexes were also measured.