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The reaction of the Zintl compound K4Ge9 with Te and Ga2Te3 in ethytenediamine (en) at 190°C gave the germanium polytelluride ([Ga(en)3]2[(GeTe)2(Te5)6-(Te8)4-])n (1). The single-crystal structure analysis revealed that 1 has two different polytelluride fragments: cross-shaped 36-e- TeTe46- anions and boat-shaped 52-e- Te84- rings. The new material is a p-type semiconductor at room temperature and switches to n-type at 380 K. [ABSTRACT FROM AUTHOR]

The article discusses the application of cationic chalcogenide in ionic liquids. It states that cationic chalcogenide is synthesized in acidic and electrophilic media and in strong acceptors. It mentions that chalcogenide clusters adopts a distinctive double-cubane structure, and displays a hexagonal pseudosymmetry. It also notes that ionic liquid stabilization creates synthetic opportunities to discover the cationic character of metal chalcogenides.

A novelBN-fused coronene derivative 1,5,9-triaza-2,6,10-triphenylboracoronene(1) has been successfully synthesized in one step from2,3,6,7,9,10-hexamethoxy-1,5,9-triamino-triphenylene. Compound 1has been investigated using photophysical, electrochemical,and molecular simulation methods. Interestingly, three phenyl groupsat B centers in compound 1can be replaced by hydroxylunits stepwise through hydroxylation in wet organic solvents, leadingto changes in the packing and physical properties. [ABSTRACT FROM AUTHOR]

To achieve ultrahigh density memory devices with the capacity of 3n or larger, organic materials with multilevel stable states are highly desirable. Here, we reported a novel larger stable heteroacene, 2,3,13,14- tetradecyloxy-5,11,16,22-tetraaza-6,10,17,21-tetrachloro- 7,9,18,20-tetraoxa-8,19-dicyanoenneacene (CDPzN), which has two different types of heteroatoms (O and N) and nine linearly fused rings. The sandwich-structure memory devices based on CDPzN exhibited excellent ternary memory behaviors with high ON2/ON1/OFF current ratios of 106.3/104.3/1 and good stability for these three states [ABSTRACT FROM AUTHOR]