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https://www.selleckchem.com/products/lee011.html Topological insulators (TIs) gained high interest due to their protected electronic surface states that allow dissipation-free electron and information transport. In consequence, TIs are recommended as materials for spintronics and quantum computing. Yet, the number of well-characterized TIs is rather limited. To contribute to this field of research, we focused on new bismuth-based subiodides and recently succeeded to synthesize a new compound Bi12Rh3Sn3I9, which is structurally closely related to Bi14Rh3I9 - a stable, layered material. In fact, Bi14Rh3I9 is the first experimentally supported weak 3D TI. Both structures are composed of well-defined intermetallic layers of ∞2[(Bi4Rh)3I]2+ with topologically protected electronic edge-states. The fundamental difference between Bi14Rh3I9 and Bi12Rh3Sn3I9 lies in the composition and the arrangement of the anionic spacer. While the intermetallic 2D TI layers in Bi14Rh3I9 are isolated by ∞1[Bi2I8]2- chains, the isoelectronic substitution of bismuth(III) with tin(II) leads to ∞2[Sn3I8]2- layers as anionic spacers. First transport experiments support the 2D character of this material class and revealed metallic conductivity.This article gives key reasons for the UK's tardy and confused attempts to react to the COVID-19 pandemic. It explains very poor outcomes in the UK (in terms of the spread of the virus and high mortality, already striking at the time of writing), in terms of an initial lack of political will to prioritise public health, itself a product of a strong Prime Minister who made the "wrong call". It also highlights a failure to "follow the science", except in so far as the "science" had already accepted some dubious political judgements and the lack of capacity to test as the starting-point.Introduction Detecting volatile organic compounds in exhaled breath enables the diagnosis of cancer. We investigated whether a handheld version of an electronic nose is able to

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