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  1. Article ; Online: Conjugated Metal-Organic Macrocycles: Synthesis, Characterization, and Electrical Conductivity.

    Zasada, Leo B / Guio, Lorenzo / Kamin, Ashlyn A / Dhakal, Diwash / Monahan, Madison / Seidler, Gerald T / Luscombe, Christine K / Xiao, Dianne J

    Journal of the American Chemical Society

    2022  Volume 144, Issue 10, Page(s) 4515–4521

    Abstract: The dimensional reduction of solids into smaller fragments provides a route to achieve new physical properties and gain deeper insight into the extended parent structures. Here, we report the synthesis of CuTOTP-OR ( ... ...

    Abstract The dimensional reduction of solids into smaller fragments provides a route to achieve new physical properties and gain deeper insight into the extended parent structures. Here, we report the synthesis of CuTOTP-OR (TOTP
    Language English
    Publishing date 2022-03-07
    Publishing country United States
    Document type Journal Article
    ZDB-ID 3155-0
    ISSN 1520-5126 ; 0002-7863
    ISSN (online) 1520-5126
    ISSN 0002-7863
    DOI 10.1021/jacs.1c12596
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Conjugated Metal–Organic Macrocycles: Synthesis, Characterization, and Electrical Conductivity

    Zasada, Leo B. / Guio, Lorenzo / Kamin, Austin A. / Dhakal, Diwash / Monahan, Madison / Seidler, Gerald T. / Luscombe, Christine K. / Xiao, Dianne J.

    Journal of the American Chemical Society. 2022 Mar. 07, v. 144, no. 10

    2022  

    Abstract: The dimensional reduction of solids into smaller fragments provides a route to achieve new physical properties and gain deeper insight into the extended parent structures. Here, we report the synthesis of CuTOTP-OR (TOTPⁿ– = 2,3,6,7- ... ...

    Abstract The dimensional reduction of solids into smaller fragments provides a route to achieve new physical properties and gain deeper insight into the extended parent structures. Here, we report the synthesis of CuTOTP-OR (TOTPⁿ– = 2,3,6,7-tetraoxidotriphenylene), a family of copper-based macrocycles that resemble truncated fragments of the conductive two-dimensional (2D) metal–organic framework Cu₃(HHTP)₂ (HHTP = 2,3,6,7,10,11-hexahydroxytriphenylene). The planar metal–organic macrocycles self-assemble into ordered nanotubes with internal diameters of ∼2 nm and short interlayer distances of ∼3.20 Å. Strong π–π stacking interactions between macrocycles facilitate out-of-plane charge transport, and pressed pellet conductivities as high as 2(1) × 10–³ S cm–¹ are observed. Peripheral alkyl functionalization enhances solution processability and enables the fabrication of thin-film field-effect transistor devices. Ambipolar charge transport is observed, suggesting that similar behavior may be operative in Cu₃(HHTP)₂. By coupling the attractive features of metal–organic frameworks with greater processability, these macrocycles enable facile device integration and a more nuanced understanding of out-of-plane charge transport in 2D conductive metal–organic frameworks.
    Keywords coordination polymers ; copper ; electrical conductivity ; nanotubes ; transistors
    Language English
    Dates of publication 2022-0307
    Size p. 4515-4521.
    Publishing place American Chemical Society
    Document type Article
    ZDB-ID 3155-0
    ISSN 1520-5126 ; 0002-7863
    ISSN (online) 1520-5126
    ISSN 0002-7863
    DOI 10.1021/jacs.1c12596
    Database NAL-Catalogue (AGRICOLA)

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  3. Article ; Online: The evolution of solvation symmetry and composition in Zn halide aqueous solutions from dilute to extreme concentrations.

    Dhakal, Diwash / Driscoll, Darren M / Govind, Niranjan / Stack, Andrew G / Rampal, Nikhil / Schenter, Gregory / Mundy, Christopher J / Fister, Timothy T / Fulton, John L / Balasubramanian, Mahalingam / Seidler, Gerald T

    Physical chemistry chemical physics : PCCP

    2023  Volume 25, Issue 34, Page(s) 22650–22661

    Abstract: The emergence of cation-anion species, or contact ion pairs, is fundamental to understanding the physical properties of aqueous solutions when moving from the ideal, low-concentration limit to the manifestly non-ideal limits of very high solute ... ...

    Abstract The emergence of cation-anion species, or contact ion pairs, is fundamental to understanding the physical properties of aqueous solutions when moving from the ideal, low-concentration limit to the manifestly non-ideal limits of very high solute concentration or constituent ion activity. We focus here on Zn halide solutions both as a model system and also as an exemplar of the applications spanning from (i) electrical energy storage
    Language English
    Publishing date 2023-08-30
    Publishing country England
    Document type Journal Article
    ZDB-ID 1476244-4
    ISSN 1463-9084 ; 1463-9076
    ISSN (online) 1463-9084
    ISSN 1463-9076
    DOI 10.1039/d3cp01559a
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Design of a containment apparatus for synchrotron XAS measurements of radioactive fluid samples under high temperatures and pressures.

    Dhakal, Diwash / Mayanovic, Robert A / Baker, Jason L / Boukhalfa, Hakim / Xu, Hongwu / Sun, Cheng-Jun

    The Review of scientific instruments

    2019  Volume 90, Issue 8, Page(s) 83108

    Abstract: The simple working principles and versatility of the hydrothermal diamond-anvil cell (HDAC) make it highly useful for synchrotron x-ray studies of aqueous and fluid samples at high pressure-temperature (P-T) conditions. However, safety concerns need to ... ...

    Abstract The simple working principles and versatility of the hydrothermal diamond-anvil cell (HDAC) make it highly useful for synchrotron x-ray studies of aqueous and fluid samples at high pressure-temperature (P-T) conditions. However, safety concerns need to be overcome in order to use the HDAC for synchrotron studies of aqueous radioactive samples at high temperatures and pressures. For accomplishment of such hydrothermal experiments of radioactive materials at synchrotron beamlines, the samples are required to be enclosed in a containment system employing three independent layers of airtight sealing at some synchrotron facilities while enabling access to the sample using several experimental probes, including incoming and outgoing x-rays. In this article, we report the design and implementation of a complete radiological safety enclosure system for an HDAC specialized for high P-T x-ray absorption spectroscopy (XAS) measurements of aqueous solutions containing the actinides at synchrotron beamlines. The enclosure system was successfully tested for XAS experiments using the HDAC with aqueous samples containing depleted uranium at temperatures ranging from 25 to 500 °C and pressures ranging from vapor pressure to 350 MPa.
    Language English
    Publishing date 2019-08-21
    Publishing country United States
    Document type Journal Article
    ZDB-ID 209865-9
    ISSN 1089-7623 ; 0034-6748
    ISSN (online) 1089-7623
    ISSN 0034-6748
    DOI 10.1063/1.5100887
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Effect of Antisolvent Additives in Aqueous Zinc Sulfate Electrolytes for Zinc Metal Anodes: The Case of Acetonitrile.

    Ilic, Stefan / Counihan, Michael J / Lavan, Sydney N / Yang, Yingjie / Jiang, Yinke / Dhakal, Diwash / Mars, Julian / Antonio, Emma N / Kitsu Iglesias, Luis / Fister, Timothy T / Zhang, Yong / Maginn, Edward J / Toney, Michael F / Klie, Robert F / Connell, Justin G / Tepavcevic, Sanja

    ACS energy letters

    2023  Volume 9, Issue 1, Page(s) 201–208

    Abstract: Aqueous zinc-ion batteries (ZIBs) employing zinc metal anodes are gaining traction as batteries for moderate to long duration energy storage at scale. However, corrosion of the zinc metal anode through reaction with water limits battery efficiency. Much ... ...

    Abstract Aqueous zinc-ion batteries (ZIBs) employing zinc metal anodes are gaining traction as batteries for moderate to long duration energy storage at scale. However, corrosion of the zinc metal anode through reaction with water limits battery efficiency. Much research in the past few years has focused on additives that decrease hydrogen evolution, but the precise mechanisms by which this takes place are often understudied and remain unclear. In this work, we study the role of an acetonitrile antisolvent additive in improving the performance of aqueous ZnSO
    Language English
    Publishing date 2023-12-20
    Publishing country United States
    Document type Journal Article
    ISSN 2380-8195
    ISSN 2380-8195
    DOI 10.1021/acsenergylett.3c02504
    Database MEDical Literature Analysis and Retrieval System OnLINE

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