Publications by authors named "A I Yagi"
Pfizer's Abrysvo vaccine is highly effective in preventing severe lower respiratory tract illness in those at high risk from the Respiratory Syncytial Virus (RSV). Japan, like other countries, is promoting RSV vaccination among pregnant women, but it needs to do better. However, Japan is enduring a state of broad vaccine hesitancy.
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- A new class of ferrocene macrocycles with a radially conjugated system was introduced, characterized by their unique stereo configurations determined through X-ray diffraction.
- The ferrocene rings exhibit a specific herringbone stacking pattern in the solid state due to host-guest interactions.
- Investigations using UV-visible spectroscopy, electrochemical measurements, and theoretical calculations revealed important electronic properties, and the macrocycle shows potential for nonlinear optical applications, indicating promise in various chemistry fields.
Article Synopsis
- * A nationwide case-control study aimed to estimate the vaccine's effectiveness against advanced cervical lesions (like CIN3+) among women aged 20-26 from 2013 to 2020, revealing a significant risk reduction for vaccinated individuals.
- * Results showed that vaccinated women had an odds ratio of 0.14 for developing CIN3 or higher compared to unvaccinated women, indicating an 86% effectiveness of the HPV vaccine; notably, none of the squamous cell carcinoma cases were from vaccinated women.
A Double-walled Noncovalent Carbon Nanotube by Columnar Packing of Nanotube Fragments.
Angew Chem Int Ed Engl
January 2025
Herein, we report the synthesis of double-walled noncovalent carbon nanotubes (CNTs) through host-guest complexation of nanotube fragments and tube-forming crystal engineering. As the smallest fragment of double-walled CNTs, a host-guest complex of perfluorocycloparaphenylene (PFCPP) and carbon nanobelt (CNB) was synthesized by mixing them in solvents. The immediate complexation of the PF[12]CPP⸧(6,6)CNB complex with a remarkably high association constant (K) of 2×10 L/mol was observed.
View Article and Find Full Text PDFIn recent years, fluorinated cycloparaphenylenes (FCPPs) have attracted attention as electron-negative CPPs as well as cyclic fluoroarenes. Herein, we report the synthesis of heterogenously polyhalogenated CPPs, chlorinated FCPPs (Cl-F[]CPPs; = 6, 8, 10, 12, 14), through nickel- and gold-based methods. The size-dependent photophysical behaviors of Cl-F[]CPPs, which are different from those of pristine CPPs, have been uncovered in this study.
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