Kyosuke Sakai

CCDC 2479448: Experimental Crystal Structure Determination

Leyi Fang, Yusuke Ishigaki, Weijing Huang, Kyosuke Sakai et autres

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, …

CCDC 2479447: Experimental Crystal Structure Determination

Leyi Fang, Yusuke Ishigaki, Weijing Huang, Kyosuke Sakai et autres

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, …

CCDC 2479445: Experimental Crystal Structure Determination

Leyi Fang, Yusuke Ishigaki, Weijing Huang, Kyosuke Sakai et autres

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, …

CCDC 2479446: Experimental Crystal Structure Determination

Leyi Fang, Yusuke Ishigaki, Weijing Huang, Kyosuke Sakai et autres

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, …

A Cascade-Responsive AND-Logic-Activatable Nanoprobe for Intraoperative Fluorescence Imaging of Colorectal Cancer

Leyi Fang, Yusuke Ishigaki, Weijing Huang, Kyosuke Sakai et autres

Precise intraoperative fluorescence (FL) imaging is crucial for improving cancer surgical outcomes. However, currently approved FL probes are consistently “always-on” fluorescent and often accumulate nonspecifically, which leads to suboptimal tumor-to-background ratios (TBR) and hampers an accurate margin assessment. We present duNP-DA, a …

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Toward the molecular rectifier: synthesis and redox properties of donor–acceptor dyad with a disulfide terminal group

Wataru Nojo, Yusuke Ishigaki, Kyosuke Sakai, Takanori Fukushima et autres

By a non-conjugating trimethylene chain, a π-extended p-phenylenediamine unit and a trinitrofluorenone unit are connected to furnish an electron-donor–acceptor dyad, which prefers a π–π stacking geometry between donor and acceptor units exhibiting a charge-transfer band in the visible-near infrared region. Redox-triggered structural …

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Nano‐shaping of chiral photons

Yuji Sunaba, Masaki Ide, Ryo Takei, Kyosuke Sakai et autres

Localized surface plasmon polaritons can confine the optical field to a single-nanometer-scale area, strongly enhancing the interaction between photons and molecules. Theoretically, the ultimate enhancement might be achieved by reducing the "photon size" to the molecular extinction cross-section. In addition, desired control …

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Plasmonic nanostructures for shrinking structured light to access forbidden transitions

Kyosuke Sakai, Hiroki KITAJIMA, Keiji Sasaki

Plasmonic nanostructures have considerable applicability in light-matter interactions owing to their capacity for strong field confinement and enhancement. Nanogap structures allow us to tailor electric field distributions at the nanoscale, bridging the differences in size and shape of atomic and light structures. …

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Optical properties of metal nano-tetramers for quadrupole interactions

Hiroki KITAJIMA, Kyosuke Sakai, Keiji Sasaki

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Hexapole plasmon resonances in the square-lattice nanodisk array

Hiroki KITAJIMA, Kyosuke Sakai, Keiji Sasaki

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Nanofocusing of structured light for quadrupolar light-matter interactions

Kyosuke Sakai, Takeaki Yamamoto, Keiji Sasaki

The spatial structure of an electromagnetic field can determine the characteristics of light-matter interactions. A strong gradient of light in the near field can excite dipole-forbidden atomic transitions, e.g., electric quadrupole transitions, which are rarely observed under plane-wave far-field illumination. Structured light …

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Optical property of metal nano tetramer II -Scattering spectrum-

Hiroki KITAJIMA, Kyosuke Sakai, Keiji Sasaki

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