リンク集 RSS/ATOM 記事

US secretary of state Marco Rubio says Central American nation is violating canal treaty’s neutrality clause

Experts warn aggressive trade measures against US allies will hurt consumers and roil supply chains

【今月発売の電子書籍】「歴史文化ライブラリー」新刊2点について

タイトル: Photo-Assisted Bottom-Up Synthesis of Orange Phosphorus著者: Qiu, Pengcheng; Wang, Jiameng; Kojima, Takahiro; Kazumi, Kenji; Sato, Hiroyasu; Komatsu, Naoki; Fukami, Kazuhiro; Sakaguchi, Hiroshi抄録: A tubular strand of phosphorus composed of vectorially aligned pentagons has been theoretically predicted as a new allotrope of phosphorus with a polar structure, expecting potential applications. However, it has not been successfully synthesized yet due to the difficulty of creating isolated strands to avoid interchain bonding. Here, such an allotrope named “orange phosphorus“ was successfully produced using a photo-assisted synthesis from an amorphous film of solution-processable Na₂P₁₆ precursors. A green laser irradiation initiated the phase transition of precursors, inducing chemical reactions like topochemical polymerization and rearrangement, creating a 1D chain of orange phosphorus. 3D electron diffraction crystallography showed that the molecular structu ...

Keir Starmer to join Nato and European leaders at summit on boosting security

US president’s aggressive actions have kick-started a ‘Buy Canadian’ campaign across the border

System disburses trillions of dollars in US government spending each year, including social security

Tariffs on Canada, Mexico and China will harm America’s own economy and diplomatic power

Carmakers, food producers and construction will be worst hit and consumers across the US, Mexico and Canada could suffer