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106129 results in Materials Science

Page 152 of 5307

  • Materials challenges in the hydrogen cycle

  • Tim Palucka, Brian J. Ingram
  • Journal:
    MRS Bulletin / Volume 44 / Issue 3 / March 2019
    Published online by Cambridge University Press:
    11 March 2019, pp. 164-166
    Print publication:
    March 2019
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  • 13th New Diamond and Nano Carbons Conference to be held in Taiwan

  • Journal:
    MRS Bulletin / Volume 44 / Issue 3 / March 2019
    Published online by Cambridge University Press:
    11 March 2019, p. 222
    Print publication:
    March 2019
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  • MRS volume 44 issue 3 Cover and Front matter

  • Journal:
    MRS Bulletin / Volume 44 / Issue 3 / March 2019
    Published online by Cambridge University Press:
    11 March 2019, pp. f1-f6
    Print publication:
    March 2019
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  • Binary ionic porphyrin self-assembly: Structures, and electronic and light-harvesting properties

  • Yong Zhong, Jiefei Wang, Yongming Tian
  • Journal:
    MRS Bulletin / Volume 44 / Issue 3 / March 2019
    Published online by Cambridge University Press:
    11 March 2019, pp. 183-188
    Print publication:
    March 2019

  • Porphyrins are a class of conjugated molecules that structurally and functionally resemble natural photosynthetic and enzymatic chromophores. Crystalline solids self-assembled from anionic and cationic porphyrins yield a new class of multifunctional optoelectronic micro- and nanomaterials. In this article, we provide details on the concept of binary ionic self-assembly (ISA) and ionized forms of porphyrins, as well as formation of hierarchical structures, including nanotubes, rods and ribbons, sheets, and three-dimensional clover-like shapes, spheres, and sheaf-like structures. We summarize key physical properties from ultraviolet–visible characterizations of J-aggregate, exciton delocalization and extended π–π stacking, and related electronic and light-harvesting properties of the structures. Depending on the molecular subunits, the functionalities of the ISA materials are altered. These ISA nanostructures possess attractive light-harvesting and charge- and energy-transport functionalities and allow access to a novel class of nanomaterials with potential for applications in sensors, photovoltaics, photocatalysis, and solar power.

  • JMR volume 34 issue 4 Cover and Front matter

  • Journal:
    Journal of Materials Research / Volume 34 / Issue 4 / 28 February 2019
    Published online by Cambridge University Press:
    28 February 2019, pp. f1-f5
    Print publication:
    28 February 2019
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Page 152 of 5307