A fiber-optic spectroscopic setup for isomerization quantum yield determination.
UV–vis spectroscopy
isomerization
molecular photoswitches
photochemistry
photon flux
Journal
Beilstein journal of organic chemistry
ISSN: 1860-5397
Titre abrégé: Beilstein J Org Chem
Pays: Germany
ID NLM: 101250746
Informations de publication
Date de publication:
2024
2024
Historique:
received:
14
05
2024
accepted:
10
07
2024
medline:
30
7
2024
pubmed:
30
7
2024
entrez:
30
7
2024
Statut:
epublish
Résumé
A spectroscopic setup for isomerization quantum yield determination is reported. The setup combines fiber-coupled LEDs, a commercially calibrated thermopile detector for measurement of the photon flux, and a fiber-coupled UV-vis spectrometer. By solving the rate equations numerically, isomerization quantum yields can be obtained from the UV-vis absorption spectra. We show that our results for the prototypical photoswitch azobenzene are in excellent agreement with the literature. The analysis of the errors showed that the quantum yields determined using this method are in the same order of magnitude as when using actinometry, thus demonstrating the reliability of our setup.
Identifiants
pubmed: 39076298
doi: 10.3762/bjoc.20.150
pmc: PMC11285046
doi:
Banques de données
figshare
['10.6084/m9.figshare.25818016']
Types de publication
Journal Article
Langues
eng
Pagination
1684-1692Informations de copyright
Copyright © 2024, Volker et al.