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Updated: Jul 10, 2026

Combining Single-molecule Manipulation and Imaging for the Study of Protein-DNA Interactions
14:43

Combining Single-molecule Manipulation and Imaging for the Study of Protein-DNA Interactions

Published on: August 27, 2014

圧力下でのブタジエンの二酸化対ポリメリゼーションのレーザー誘発選択性

Margherita Citroni1, Matteo Ceppatelli, Roberto Bini

  • 1Dipartimento di Chimica dell'Università di Firenze, Polo Scientifico, Via della Lastruccia 3, I-50019 Sesto Fiorentino, Firenze, Italy.

Science (New York, N.Y.)
|March 16, 2002
PubMed
まとめ

高圧でブタジエンがビニルサイクロヘクセンに二酸化する. しかし,レーザー照射は純粋なトランスポリブタジエンの形成を促進し,選択的な化学反応経路を明らかにします.

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Synthesis and Characterization of Supramolecular Colloids

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Creating Highly Specific Chemically Induced Protein Dimerization Systems by Stepwise Phage Selection of a Combinatorial Single-Domain Antibody Library10:17

Creating Highly Specific Chemically Induced Protein Dimerization Systems by Stepwise Phage Selection of a Combinatorial Single-Domain Antibody Library

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Photochemical Electrocyclic Reactions: Stereochemistry

The absorption of UV–visible light by conjugated systems causes the promotion of an electron from the ground state to the excited state. Consequently, photochemical electrocyclic reactions proceed via the excited-state HOMO rather than the ground-state HOMO. Since the ground- and excited-state HOMOs have different symmetries, the stereochemical outcome of electrocyclic reactions depends on the mode of activation; i.e., thermal or photochemical.
Selection Rules: Photochemical Activation
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Radical Formation: Homolysis

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Cycloaddition Reactions: MO Requirements for Photochemical Activation

Some cycloaddition reactions are activated by heat, while others are initiated by light. For example, a [2 + 2] cycloaddition between two ethylene molecules occurs only in the presence of light. It is photochemically allowed but thermally forbidden.
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