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関連する概念動画

Chirality02:25

Chirality

29.7K
Chirality is a term that describes the lack of mirror symmetry in an object. In other words, chiral objects cannot be superposed on their mirror images. For example, our feet are chiral, as the mirror image of the left foot, the right foot, cannot be superposed on the left foot.
Chiral objects exhibit a sense of handedness when they interact with another chiral object. For example, our left foot can only fit in the left shoe and not in the right shoe. Achiral objects — objects that have...
29.7K
Chirality in Nature02:30

Chirality in Nature

17.3K
Chirality is the most intriguing yet essential facet of nature, governing life’s biochemical processes and precision. It can be observed from a snail shell pattern in a macroscopic world to an amino acid, the minutest building block of life. Most of the snails around the world have right-coiled shells because of the intrinsic chirality in their genes. All the amino acids present in the human body exist in an enantiomerically pure state, except for glycine - the sole achiral amino acid.
17.3K
Chirality at Nitrogen, Phosphorus, and Sulfur02:30

Chirality at Nitrogen, Phosphorus, and Sulfur

7.0K
Chirality is most prevalent in carbon-based tetrahedral compounds, but this important facet of molecular symmetry extends to sp3-hybridized nitrogen, phosphorus and sulfur centers, including trivalent molecules with lone pairs. Here, the lone pair behaves as a functional group in addition to the other three substituents to form an analogous tetrahedral center that can be chiral.
A consequence of chirality is the need for enantiomeric resolution. While this is theoretically possible for all...
7.0K
Molecules with Multiple Chiral Centers02:25

Molecules with Multiple Chiral Centers

15.1K
Molecules that possess multiple chiral centers can afford a large number of stereoisomers. For instance, while some molecules like 2-butanol have one chiral center, defined as a tetrahedral carbon atom with four different substituents attached, several molecules like butane-2,3-diol have multiple chiral centers. A simple formula to predict the number of stereoisomers possible for a molecule with n chiral centers is 2n. However, there can be a lower number where some of the stereoisomers are...
15.1K
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

30.9K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
30.9K
Structures of Solids02:22

Structures of Solids

18.0K
Solids in which the atoms, ions, or molecules are arranged in a definite repeating pattern are known as crystalline solids. Metals and ionic compounds typically form ordered, crystalline solids. A crystalline solid has a precise melting temperature because each atom or molecule of the same type is held in place with the same forces or energy. Amorphous solids or non-crystalline solids (or, sometimes, glasses) which lack an ordered internal structure and are randomly arranged. Substances that...
18.0K

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関連する実験動画

Updated: Feb 8, 2026

Assembly of Gold Nanorods into Chiral Plasmonic Metamolecules Using DNA Origami Templates
09:17

Assembly of Gold Nanorods into Chiral Plasmonic Metamolecules Using DNA Origami Templates

Published on: March 5, 2019

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キラルプラズモニックフィールドプローブ バイオインタフェースの構造順序

Christopher Kelly1, Ryan Tullius1, Adrian J Lapthorn1

  • 1School of Chemistry , Joseph Black Building, University of Glasgow , Glasgow G12 8QQ , United Kingdom.

Journal of the American Chemical Society
|June 19, 2018
PubMed
まとめ

超キラリティは 強化されたプラズモニックフィールドで 複雑なタンパク質層の 構造的な順序を監視できます この突破は 既知の成分を必要とせずに 生物学的インターフェースの 研究を可能にします

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Colloidal Synthesis of Nanopatch Antennas for Applications in Plasmonics and Nanophotonics
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Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy
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Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy

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関連する実験動画

Last Updated: Feb 8, 2026

Assembly of Gold Nanorods into Chiral Plasmonic Metamolecules Using DNA Origami Templates
09:17

Assembly of Gold Nanorods into Chiral Plasmonic Metamolecules Using DNA Origami Templates

Published on: March 5, 2019

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Colloidal Synthesis of Nanopatch Antennas for Applications in Plasmonics and Nanophotonics
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Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy
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科学分野:

  • バイオ物理学
  • 表面科学
  • スペクトロスコーピー

背景:

  • バイオポリマーの構造的な順序は,生物学的相互作用にとって重要です.
  • 現存するスペクトル測定法はシンプルで単一成分システムに限られており,しばしばラベルが必要である.
  • 複雑な多成分生物の層は 挑戦的なスペクトルサインを持っています

研究 の 目的:

  • タンパク質層のグローバル・オリエンテーション・オーダーに対する超キラル・プラズモニック・フィールドの感度を示す.
  • 数値シミュレーションとモデルシステムを用いてメソッドを検証する.
  • 複雑な生物学的インターフェイスを分析するためのツールとして,スーパーキラリティを確立する.

主な方法:

  • 超キラルプラズモニックフィールドを使って タンパク質の層を調べる
  • 免疫グロブリンG層の方向性順序の進化を監視する.
  • 血清タンパク質層の構造的な変化を分析する

主要な成果:

  • 超キラリティは,アニゾトロプ的電極-磁気二極反応を検知し,構造的な順序を示します.
  • この方法は,モデル層と複合タンパク質層の両方の指向順序をうまくモニタリングしました.
  • 血清タンパク質層の質的変化は,構造的順序の変化と相関していた.

結論:

  • スーパーキラリティは,タンパク質層のグローバル・オリエンテーション・オーダーに敏感です.
  • この技術は複雑な生物学的インターフェースの 伝統的な方法の限界を克服します
  • スーパーキラリティは,実際の生物学的システムの構造動態を研究するための強力な新しいツールを提供します.