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関連する概念動画

Newman Projections02:06

Newman Projections

Different notations are used to represent the three-dimensional structure of molecules on two-dimensional surfaces. One of the most commonly used representations is the dash-wedge formula. The dashed wedges, solid wedges, and the plane lines indicate the groups situated behind the plane, coming out of the plane, and in the plane, respectively.
The organic molecules rotate across the single bonds leading to numerous temporary three-dimensional structures of varying energy known as conformers.
The Phragmoplast01:59

The Phragmoplast

Cell division is essential for organismal growth and development. In animal cells, the central spindle and its associated proteins form the midbody, a structure that has an essential role in cytokinesis. In plants, the central spindle, along with the microtubules, actin, and other cell components, matures into the phragmoplast, which is necessary for cytokinesis. Unlike the stationary midbody, the phragmoplast expands centrifugally, eventually leading to the formation of the new cell wall.
The...
Distribution of Cytoplasmic Content02:33

Distribution of Cytoplasmic Content

Cytokinesis segregates a cell’s chromosomes and organelles into its daughter cells. Organelles divide and grow prior to cell division but cannot be synthesized de novo; therefore, cells must receive at least one copy of each organelle to survive. Currently, many of the details of how the organelles are distributed are not yet fully elucidated.
Distribution of cytoplasmic determinants
The cytoplasm contains various organelles, as well as salts, proteins, and water. The distribution of small...
Deformation in a Circular Shaft01:10

Deformation in a Circular Shaft

One of the distinctive characteristics of circular shafts is their ability to maintain their cross-sectional integrity under torsion. In other words, each cross-section continues to exist as a flat, unaltered entity, simply rotating like a solid, rigid slab. To understand the distribution of shearing stress within such a shaft, consider a cylindrical section inside this circular shaft. This section has a length of L and a radius of R, with one end fixed. The radius of the cylindrical section is...
Microbial Morphologies01:29

Microbial Morphologies

Bacterial and archaeal cells exhibit remarkable diversity in shape and structure, critical in their adaptability and functionality. Among bacteria, the most commonly observed shapes include cocci and bacilli. Cocci are spherical and may exist singly or in groupings such as pairs (diplococci), chains (streptococci), clusters (staphylococci), or tetrads. Bacilli, in contrast, are rod-shaped and can also occur as single cells, in pairs, or chains, depending on their environmental and genetic...
Symmetry01:26

Symmetry

The equation of an ellipse centered at the origin defines all points whose distances from the center maintain a constant ratio between the horizontal and vertical axes. This equation results in a smooth, closed curve that extends further along the x-axis than the y-axis, giving it a horizontal orientation. Such an ellipse demonstrates three kinds of symmetry: across the x-axis, across the y-axis, and about the origin. These symmetries are essential in understanding the graph's structure and...

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関連する実験動画

Updated: Jul 13, 2026

Culturing and Applications of Rotating Wall Vessel Bioreactor Derived 3D Epithelial Cell Models
12:22

Culturing and Applications of Rotating Wall Vessel Bioreactor Derived 3D Epithelial Cell Models

Published on: April 3, 2012

サイクロトリフォスファゼネスの柱状メソモルフィック組織

Joaquín Barberá1, Manuel Bardají, Josefina Jiménez

  • 1Polymer and Liquid Crystal Group--Departamento de Química Orgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-C.S.I.C., 50009 Zaragoza, Spain.

Journal of the American Chemical Society
|June 23, 2005
PubMed
まとめ

アロマティックエステル単位を持つ新しいオーガノサイクロトリフォスファゼンは,調節可能なメソモルフィズムを示します. 端末鎖の構造に応じて,高熱安定性を持つ円筒状 (カリミット型) または円盤状 (柱状) の液晶相を形成します.

さらに関連する動画

Self-assembly of Complex Two-dimensional Shapes from Single-stranded DNA Tiles
10:23

Self-assembly of Complex Two-dimensional Shapes from Single-stranded DNA Tiles

Published on: May 8, 2015

Initial 3D Cell Cluster Control in a Hybrid Gel Cube Device for Repeatable Pattern Formations
05:22

Initial 3D Cell Cluster Control in a Hybrid Gel Cube Device for Repeatable Pattern Formations

Published on: March 21, 2019

関連する実験動画

Last Updated: Jul 13, 2026

Culturing and Applications of Rotating Wall Vessel Bioreactor Derived 3D Epithelial Cell Models
12:22

Culturing and Applications of Rotating Wall Vessel Bioreactor Derived 3D Epithelial Cell Models

Published on: April 3, 2012

Self-assembly of Complex Two-dimensional Shapes from Single-stranded DNA Tiles
10:23

Self-assembly of Complex Two-dimensional Shapes from Single-stranded DNA Tiles

Published on: May 8, 2015

Initial 3D Cell Cluster Control in a Hybrid Gel Cube Device for Repeatable Pattern Formations
05:22

Initial 3D Cell Cluster Control in a Hybrid Gel Cube Device for Repeatable Pattern Formations

Published on: March 21, 2019

科学分野:

  • マテリアルサイエンス 材料科学
  • 超分子化学 超分子化学
  • 有機化学 オーガニック・ケミストリー

背景:

  • オーガノサイクロトリフォスファゼンは,多用途の分子プラットフォームです.
  • 液晶は,固体状態と同位体状態の間の秩序ある相を示す.
  • メソモルフィズムは分子構造と分子間相互作用の影響を受けます.

研究 の 目的:

  • 新型オーガノサイクロトリフォスファゼンの合成戦略を開発する.
  • 分子構造とメソモルフィック行動の関係を調査する.
  • 調節可能な液体結晶の性質の可能性を調査する.

主な方法:

  • ポリケネナー芳香エステル単位を持つサイクロトリフォスファゼンの合成.
  • 合成された化合物の特徴は,X線微分などの技術を用いて記述される.
  • メソフェーズ行動と安定性を決定するための熱分析.

主要な成果:

  • 特定のプロメソゲンユニットを持つオーガノサイクロトリフォスファゼンの成功合成.
  • シングル端のアルキル鎖で円筒形の上部構造を形成するカラミット性メソモルフィズムの実証.
  • ディスコティック構造を形成する3つの長い末端の鎖を持つ柱状メソフェーズの観察.
  • X線 difraktionでは,柱状の段階での螺旋的な順序が確認されました.
  • すべての合成化合物は,高い熱安定性を示した.

結論:

  • 硬い部分と柔軟な部分の微分離がメソモルフィズムを決定する.
  • 分子設計は,形成された液晶相の種類を制御することを可能にします.
  • これらのオルガノサイクロトリフォスファゼンは,高度な応用のための有望な材料のクラスです.