A network of tetrahedral vertices can fill three-dimensional (3D) spaces in a beautiful and isotropic manner, which is found as diamonds with sp3-h...

Nature Communications - Mechanical motions in hybrid sp2/sp3 -hybrid nanocarbon peapods might lead to promising materials applications, but have been insufficiently explored. Here the authors...

Multiple fused pentagon–heptagon pairs are frequently found as defects at the grain boundaries of the hexagonal graphene lattice and are suggested to have a fundamental influence on graphene-related...

Communications Chemistry - Incommensurate double-wall carbon nanotubes give rise to unique stereochemistry originating from twisted stacks of hexagon arrays, but atomic-level studies of molecular...

Coronoids, polycyclic aromatic hydrocarbons with geometrically defined cavities, are promising model structures of porous graphene. Here, we report the on-surface synthesis of C168 and C140 coronoi...

This paper describes a synthetic approach to the synthesis of 1,2,4,5-tetraarylbenzene derivatives from cyclopropenes. The Lewis acid-mediated dimerization of cyclopropenes gives tricyclo[3.1.0.02,...

Amazon有機化学を深く理解するために有効な方法は，演習問題を解き，知識の定着を確認することである．有機化学の初期で大学生がつまずきやすい一つが化合物の命名法．有機化学では，この命名法を理解していることが前提となって講義が進むが，きちんと学習する機会は少ない．本書では，基本的な命名法のルールを理解できるまで繰り返せるように，1000問超の問題を掲載．あとは「身体に染みつく」まで解いて解いて...

Nature Communications - Diatomic carbon (C2) is historically an elusive chemical species, considered to require high physical energy for its generation. Here, the authors describe the first...

５ちゃんねるをスマートフォン ( iphone android )で快適に楽しめます。5chスマホ専用ブラウザ！アプリインストール不要。

今回は、「アート×化学」というこれまでにないチャレンジです。学問の細分化が進む昨今、感情や表現を扱うアーティスト、データや現実を扱うサイエンティストの両者は分断されがちです。しかし、芸術家のレオナルド・ダ・ヴィンチはサイエンスにも造詣が深く、化学者ケクレは絵画や製図の能力にも優れていました。目まぐるしく変化を続ける予測不能性の高い現代では、ひとつの専門分野に固執する姿勢はどんどん時代遅れにな...

Seminar Archive Seminar Series “The Career of…” Klaus Müllen (April 3, 2020 — Sergey Fisher) Yoshito Tobe (April 7, 2020 — Anna Möckel) Kenichiro Itami (April 14, 2020&n…

Molecular compounds with zigzag carbon nanotube geometries are exceedingly rare. Here we report the synthesis and characterization of carbon-based nanotubes with zigzag geometry, best described as...

Expanded porphyrins represent emerging structures in realizing topological chirality; however, their inherent flexibility has hampered the effective chiral resolution. Herein, we rationally designed...

A cylindrical molecule with D3-symmetry was found to serve as versatile vertices to form 2-dimensional, honeycomb networks of host–guest complexes. Varying the structural elements of the layered...

東京大学の学食に新しくオープンしたハンバーガー店が話題になっている。SNSには、1000円も払ったのに、クオリティがいまいちだったとの苦言も。実食したところ、残念ながら「何の感動も覚えなかった」と筆者は綴っている

Nature Communications - Incommensurate pairing is a type of stereoisomerism, observed in carbon bilayers, that arises from the twisted orientations of the graphitic layers. Here, the authors create...

The 101st CSJ Annual Meeting,Alternate arrangement of two different panels in chiral cylindrical molecules with belt persistency

The synthesis of cycloarenes in solution is challenging because of their low solubility and the often hindered cyclodehydrogenation reaction of their nonplanar precursors. Using an alternative...