Publications by authors named "Y Kanematsu"
Deuterium isotope effects on interaction energies and geometrical parameters in several HO(DO)ene and HO+(DO)yne complexes, which involve O-H(D)π interactions, have been analyzed using the MP2 level of the multi-component molecular orbital method (MC_MP2), which can incorporate the nuclear quantum effects of light nuclei, such as protons and deuterons. The MC_MP2 calculations revealed that DO replacement reduced the interaction energies of the complexes and induced changes in geometrical parameters. In addition, natural energy decomposition analysis (NEDA) revealed a strong correlation between the H/D isotope effects on the H/Dπ distances and on each energy component.
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- The study aimed to analyze the ischemic penumbra and prognosis in patients with acute cerebral infarction using multi-delay pseudo-continuous arterial spin-labeling (pCASL) imaging data, focusing on cerebral blood flow (CBF) and delay time (DT).
- The participant group consisted of 25 patients treated for cerebral infarction, with evaluations including CBF, DT, infarct sizes, and clinical outcomes through NIHSS scores, alongside treatment variations such as tPA and thrombectomy.
- Results indicated a significant relationship between CBF and infarct size and NIHSS scores, with DT at the penumbra identified as the most reliable predictor of infarct enlargement, particularly in patients who did not achieve recanalization
Article Synopsis
- - The study investigates how charge transfer occurs during chemical reactions at metal-organic interfaces, focusing on a self-assembled monolayer (Im-SAM) on gold, using various spectroscopic techniques and theoretical calculations.
- - Researchers aimed to see if adding atomic hydrogen to the imidazole groups in the Im-SAM would lead to the formation of stable imidazolium cations and promote electron transfer to the gold substrate.
- - Results showed that hydrogen irradiation resulted in imidazolium cation formation and confirmed changes in work function, indicating successful electron transfer processes despite the insulating layer of alkanethiolate.
Purpose: The preoperative assessment of carotid plaques is necessary to render revascularization safe and effective. The aim of this study is to evaluate the usefulness of chemical exchange saturation transfer (CEST)-MRI, particularly amide proton transfer (APT) imaging as a preoperative carotid plaque diagnostic tool.
Methods: We recorded the APT signal intensity on concentration maps of 34 patients scheduled for carotid endarterectomy.
By introducing main-group elements such as boron and bismuth to π-conjugated systems, it is possible to modify the optical properties of π-conjugated materials through orbital interactions between the orbital on the elements and π/π*-orbitals, and the heavy atom effect. Moreover, bismuth, which is the heaviest stable element, induces a significant heavy atom effect, making organobismuth compounds promising for applications as phosphorescent materials. In this study, we synthesized new room-temperature phosphorescent materials by incorporating bismuth into thiophene units.
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