Two new meroterpenoids, penicianstinoids A and B (1 and 2), and eight new isocoumarins, peniciisocoumarins A−H (3−10), together with 10 known analogues (11−20) were obtained from the mangrove-derived fungus Penicillium sp. TGM112. The structures and absolute configurations of 1−10 were determined by interpretation of detailed NMR, MS spectroscopic data, X-ray diffraction analyses, modified Mosher's method, and calculated electronic circular dichroism data. Compounds 1−4, 7, 8, 10, 12, 13, and 16 showed growth inhibition activity against newly hatched larvae of Helicoverpa armigera Hubner with IC 50 values ranging from 50 to 200 μg/mL, respectively. Compounds 1, 2, and 11−15 displayed activity against Caenorhabditis elegans with EC 50 values ranging from 9.4 (± 1.0) to 38.2 (± 0.6) μg/mL, respectively. Compound 1 represents an austinoid-like meroterpenoid that is reported here for the second time, in which a carbon−carbon double bond was oxidized to a carbonyl group at C-1′−C-2′.

Four new anthraquinone derivatives (1-4) and four new alterporriol-type anthranoid dimers (14-17), along with 17 analogues, were isolated from the solid rice fermentation of the fungus Stemphylium sp. 33231 obtained from the mangrove Bruguiera sexangula var. rhynchopetala collected from the South China Sea. Their structures were elucidated using comprehensive spectroscopic methods. The absolute configurations of 1, 3, and 4 were determined by single-crystal X-ray diffraction of their derivatives (1a, 3b, and 4a). The absolute configurations of the chiral 17-19 were determined by comparing their CD spectra with 21. The inhibitory activities of most of the compounds against seven terrestrial pathogenic bacteria and two cancer cell lines were evaluated.

A series of fluorene-based Ln-MOFs with 3D neutral network are reported. Eu-MOF can act as the highly sensitive sensor to Pb2+ and Fe3+ ions in aqueous solution by fluorescence enhancement and quenching, respectively. The dynamic and static quenching constants of Fe3+ are obtained.

Seven cyclometalated iridium(III) complexes Ir1−Ir7 based on phenylpyrazole derivatives as main ligands and tetraphenylimidodiphosphinate (tpip) as the ancillary ligand were synthesized and fully characterized. The proligands of 1-), and 1-[4-(trifluoromethyl)phenyl]-1H-indazole (cf 3 -7-pidz, 2g)} were prepared with good yields. The emission maxima of all Ir(III) complexes can be tuned from 453 to 576 nm with different photoluminescence quantum yields (10.4−70.9%) by varying the type of substituent on the different main ligand frameworks. The organic light-emitting diodes using Ir(III) complexes as the emitters with blue, bluish-green, and yellow colors exhibit a maximum current efficiency and an external quantum efficiency of 39.2 cd A −1 and 14.8%, respectively.