Integrated Imaging Facility

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  • Author(s):
    Angela Meola, Nicole Hondroglannis, Pierce Brown, Maksym Zhukovskyi, Zheng Zheng, Zeev Rosenzweig, Mary Sajini Devadas
    Abstract:

    Icosahedron and [Au25(PPh)10(C6H14S)5Cl2]2+ bi-icosahedron clusters were synthesized. Ligand exchange reactions were carried out with a new coumarin-derived fluorophore (Cou-SH) to label both clusters. Labeled and unlabeled Au25 were compared and the changes in the electronic structure were determined. The labeled clusters showed marked changes in electronic states, as evidenced by the quenching in the UV region and enhancement in the near infrared. The quantum yield from Cou-SH decreased and…

    Date Published:
    2019-08
    Record Visibility:
    Public
  • Author(s):
    Jakub Plášil, Anthony R. Kampf, Peter C. Burns
    Abstract:

    Redcanyonite (IMA2016-082), (NH4)2Mn(UO2)4O4(SO4)24, occursunderground in the Blue Lizard mine, Red Canyon, White Canyon district,San Juan County, Utah, USA. It occurs with natrozippeite, brochantite, devilline, posnjakite, johannite, gypsum, bobcookite, pickingerite, pentahydrite, and the NH4-analog of zippeite, ammoniozippeite. Redcanyonite occurs as radial aggregates of red-orange needles and blades individually reaching up to 0.2 mm in length, with aggregates measuring up to 1 mm i…

    Date Published:
    2018-05
    Record Visibility:
    Public