Cationic pincer platinum(II) complexes bearing secondary thioamide units showed aggregation‐induced emission (AIE) activity in chloroform/hexane and methanol/water mixtures. Hydrogen bonding of the thioamide units and interionic interactions contributed to the AIE activities.

An amphiphilic pincer platinum(II) complex with a poly(ethylene oxide) (PEO) chain exhibited aggregation-induced emission (AIE) because of micelle formation in water. The AIE activity was enhanced by the addition of 1,3,5-benzenetricarboxylic acid, which induced micelle formation through hydrogen-bonding interactions with the PEO chain.

New PtII complexes of bidendate Ph2S(=N(Ph2)S≡N)2 (ndsdsd) ligand were prepared, including the homoleptic complex, i.e., [Pt(ndsdsd)2](hfac)2 (1) (hfac: 1,1,1,5,5,5-hexafluoro-2,4-pentanedionato), and the heteroleptic complexes, [Pt(N^N)(ndsdsd)]X2 [N^N = 1,10-phenanthroline (phen) (2), 4,7-diphenylphenanthroline (bathophen) (3); X = PF6 (a) and ClO4 (b)] and [Pt(C^N)(ndsdsd)]X [C^N = 2-phenylpyridine (ppy) (4) and benzo[h]quinoline (bzq) (5); X = PF6 (a) and ClO4 (b)]. The complexes were characterized by IR, NMR spectroscopy, and elemental analysis. The molecular structures of complexes 1, 2a, and 4b have been elucidated by X-ray crystallographic analysis. The photophysical properties of all complexes were examined. Complexes 2 and 3a are very weakly luminescent in solution, whereas they show highly emissive in the solid state (Φem = 0.11–0.27).