2,6-Bis(thiazol-2-yl)pyridines functionalized with 9-anthryl (L1), 9-phenanthryl (L2), and 1-pyrenyl (L3) groups were used for the preparation of [Pt(Ln)Cl]CF3SO3 (1–3) with high cytotoxic activity against ovarian cancer cells.

Five novel derivatives of pyrene, substituted at positions 1,3,6,8 with 4-(2,2-dimethylpropyloxy)pyridine (P1), 4-decyloxypyridine (P2), 4-pentylpyridine (P3), 1-decyl-1,2,3-triazole (P4), and 1-benzyl-1,2,3-triazole (P5), are obtained through a Suzuki-Miyaura cross-coupling reaction or Cu -catalyzed 1,3-dipolar cycloaddition reaction, respectively, and characterized thoroughly. TGA measurements reveal the high thermal stability of the compounds. Pyrene derivatives P1-P5 all show photoluminescence (PL) quantum yields (Φ) of approximately 75 % in solution. Solid-state photo- and electroluminescence characteristics of selected compounds as organic light-emitting diodes are tested. In the guest-host configuration, two matrixes, that is, poly(N-vinylcarbazole) (PVK) and a binary matrix consisting of PVK and 2-tert-butylphenyl-5-biphenyl-1,3,4-oxadiazole (PBD) (50:50 wt %), are applied. The diodes show red, green, or blue electroluminescence, depending on both the compound chemical structure and the actual device architecture. In addition, theoretical studies (DFT and TD-DFT) provide a deeper understanding of the experimental results.

New catalytically or high pressure activated reactions and routes, including coupling, double bond migration in allylic systems, and various types of cycloaddition and dihydroamination have been used for the synthesis of novel bithiophene derivatives. Thanks to the abovementioned reactions and routes combined with non-catalytic ones, new OPEN ACCESSMolecules 2015, 20 4566 acetylene, butadiyne, isoxazole, 1,2,3-triazole, pyrrole, benzene, and fluoranthene derivatives with one, two or six bithiophenyl moieties have been obtained. Basic sources of crucial substrates which include bithiophene motif for catalytic reactions were 2,2'-bithiophene, gaseous acetylene and 1,3-butadiyne.

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New mono‐ and diruthenium, symmetrical and unsymmetrical complexes, bridged by a new cyclometalating 1,3,6,8‐tetra(4‐substituted‐2‐pyridyl)pyrene derivative containing the solubilizing group 2,2‐dimethylpropyloxy, with the terminal 4′‐phenyl‐2,2′:6′,2′′‐terpyridine ligands containing diethylamine and a 2‐ethynyl‐9,9‐dioctylfluorene moiety, were synthesized and thoroughly characterized. Thermal studies show that the obtained complexes retain high thermal stability. Spectroscopic studies show the metal‐to‐ligand charge‐transfer excitation. Further, electrochemical studies show delocalization of the electronic charge (mixed valance). In addition, density functional theory and time‐dependent density functional theory calculations have provided more detail about the structural properties and a deeper understanding of the experimental results. All of the obtained results show the considerable differences between the mono‐ and diruthenium and symmetrical and unsymmetrical complexes.