((3-))

Claire H Woo1, Barry C Thompson, Bumjoon J Kim

  • 1Department of Chemical Engineering, University of California, Berkeley, California 94720, USA.

PubMed
まとめ

ポリ ((3-ヘキシルチオフェン) のより低い地域規則性は,効率を犠牲にすることなく,ポリマーフルレンの太陽電池の熱安定性を高めます. これは,制御された障害がポリマー太陽電池の設計を改善できることを示唆しています.

関連する概念動画

Thermal Electrocyclic Reactions: Stereochemistry01:17

Thermal Electrocyclic Reactions: Stereochemistry

The stereochemistry of electrocyclic reactions is strongly influenced by the orbital symmetry of the polyene HOMO. Under thermal conditions, the reaction proceeds via the ground-state HOMO.
Selection Rules: Thermal Activation
Conjugated systems containing an even number of π-electron pairs undergo a conrotatory ring closure. For example, thermal electrocyclization of (2E,4E)-2,4-hexadiene, a conjugated diene containing two π-electron pairs, gives trans-3,4-dimethylcyclobutene.
Thermal and Photochemical Electrocyclic Reactions: Overview01:26

Thermal and Photochemical Electrocyclic Reactions: Overview

Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.