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  1. Article ; Online: Photothermal therapeutic ability of copper open-shell nanostructures that are effective in the second biological transparency window based on symmetry breaking-induced plasmonic properties.

    Sugawa, Kosuke / Suzuki, Arisa / Honda, Jotaro / Yabuki, Taiku / Tahara, Hironobu / Hayakawa, Yutaro / Furuya, Masato / Ikake, Hiroki / Kimura, Tsuyoshi / Kosuge, Yasuhiro / Kurumi, Satoshi / Akiyama, Tsuyoshi / Takase, Kouichi / Otsuki, Joe

    Journal of materials chemistry. B

    2023  Volume 11, Issue 29, Page(s) 6837–6852

    Abstract: In this study, a photothermal therapy agent that works efficiently in the second biological transparency window was developed based on the localized surface plasmon (LSP) resonance of symmetry-broken open-shell nanostructures of low-cost Cu (CuOSNs). The ...

    Abstract In this study, a photothermal therapy agent that works efficiently in the second biological transparency window was developed based on the localized surface plasmon (LSP) resonance of symmetry-broken open-shell nanostructures of low-cost Cu (CuOSNs). The strong LSP resonance and superior photothermal conversion ability in the second biological transparency window were achieved by generating the dipolar bonding mode due to the plasmon hybridization between the nanoshell dipole and the nanohole dipole at the opening edge in CuOSNs derived from the symmetry breaking of a Cu nanoshell. Oxidative dissolution of CuOSNs in water was significantly suppressed by successive coating with the self-assembled monolayer of 16-mercaptohexadecanoic acid and a thin silica layer. Furthermore, the stability in phosphate buffered saline, which models the biological environment, was attained by further coating the nanoparticles with polyethylene glycol. It was demonstrated from
    MeSH term(s) Humans ; Copper/pharmacology ; Copper/chemistry ; HeLa Cells ; Nanostructures/chemistry ; Nanoparticles ; Polyethylene Glycols/chemistry
    Chemical Substances Copper (789U1901C5) ; Polyethylene Glycols (3WJQ0SDW1A)
    Language English
    Publishing date 2023-07-26
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2702241-9
    ISSN 2050-7518 ; 2050-750X
    ISSN (online) 2050-7518
    ISSN 2050-750X
    DOI 10.1039/d3tb00443k
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: A New Spin-Correlated Plasmon in Novel Highly Oriented Single-Crystalline Gold Quantum Dots.

    Ong, Bin Leong / Naradipa, Muhammad Avicenna / Fauzi, Angga Dito / Majidi, Muhammad Aziz / Diao, Caozheng / Kurumi, Satoshi / Das, Pranab Kumar / Xiao, Chi / Yang, Ping / Breese, Mark B H / Ong, Sheau Wei / Tan, Khay Ming / Tok, Eng Soon / Rusydi, Andrivo

    Nano letters

    2021  Volume 21, Issue 18, Page(s) 7448–7456

    Abstract: A concept of spin plasmon, a collective mode of spin-density, in strongly correlated electron systems has been proposed since the 1930s. It is expected to bridge between spintronics and plasmonics by strongly confining the photon energy in the ... ...

    Abstract A concept of spin plasmon, a collective mode of spin-density, in strongly correlated electron systems has been proposed since the 1930s. It is expected to bridge between spintronics and plasmonics by strongly confining the photon energy in the subwavelength scale within single magnetic-domain to enable further miniaturizing devices. However, spin plasmon in strongly correlated electron systems is yet to be realized. Herein, we present a new spin correlated-plasmon at room temperature in novel Mott-like insulating highly oriented single-crystalline gold quantum-dots (HOSG-QDs). Interestingly, the spin correlated-plasmon is tunable from the infrared to visible, accompanied by spectral weight transfer yielding a large quantum absorption midgap state, disappearance of low-energy Drude response, and transparency. Supported with theoretical calculations, it occurs due to an interplay of surprisingly strong electron-electron correlations, s-p hybridization and quantum confinement in the s band. The first demonstration of the high sensitivity of spin correlated-plasmon in surface-enhanced Raman spectroscopy is also presented.
    Language English
    Publishing date 2021-09-09
    Publishing country United States
    Document type Journal Article
    ISSN 1530-6992
    ISSN (online) 1530-6992
    DOI 10.1021/acs.nanolett.0c05004
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Correction to A New Spin-Correlated Plasmon in Novel Highly Oriented Single-Crystalline Gold Quantum Dots.

    Ong, Bin Leong / Naradipa, Muhammad Avicenna / Dito Fauzi, Angga / Majidi, Muhammad Aziz / Diao, Caozheng / Kurumi, Satoshi / Das, Pranab Kumar / Xiao, Chi / Yang, Ping / Breese, Mark B H / Ong, Sheau Wei / Tan, Khay Ming / Tok, Eng Soon / Rusydi, Andrivo

    Nano letters

    2021  Volume 21, Issue 21, Page(s) 9364

    Language English
    Publishing date 2021-10-28
    Publishing country United States
    Document type Published Erratum
    ISSN 1530-6992
    ISSN (online) 1530-6992
    DOI 10.1021/acs.nanolett.1c03668
    Database MEDical Literature Analysis and Retrieval System OnLINE

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