Photochromic C2-symmetric chiral diarylethene: from the initial state to the final State
type: Distribution
access URL: https://hal.science/hal-00674314
format: HTML
issued: 2026-05-26T21:25:25.599501
modified: 2026-05-26T21:25:25.552732

test_moissonnage_selune
type: Agent

Photochromic C2-symmetric chiral diarylethene: from the initial state to the final State
type: Dataset
contact point: Organization
  fn: CCSD
keyword: fluorescent-brighteners
keyword: dyes
keyword: organic-pigments
keyword: photographic-sensitizers
keyword: journal-articles
keyword: chimtheochemical-sciencestheoretical-andor-physical-chemistry
keyword: infoeu-reposemanticsarticle
landing page: 0022-3263
description: The behavior of 1,2-bis[(R)-2-(1-methoxymethoxyethyl)-3-benzo[b]thienyl] hexafluorocyclopentene before and upon UV irradiation and during thermal evolution of the photoirradiated solution has been thoroughly investigated by multinuclear NMR spectroscopy. A dynamic NMR study of the initial state was performed, providing a detailed description of the perceived conformational processes in the system. Before irradiation, three open conformations are in equilibrium, whereas UV irradiation generated the two expected cyclized diastereomers. The minor diastereomer was thermally less stable than the major one, thus leading to an unexpected increase in the diastereoselectivity when raising the photoirradiation temperature. In addition, a long thermal evolution induced slow rearrangement of the stable diastereomer into byproducts that were identified.
issued: 2026-05-26T21:25:25.574264
language: en
modified: 2026-05-26T21:25:25.574272