Electron Spin Relaxation of Photoexcited Porphyrin in Water-Glycerol Glass.
DEER/PELDOR
EPR spectroscopy
distance measurements
electron spin relaxation
porphyrin
spin labels
Journal
Molecules (Basel, Switzerland)
ISSN: 1420-3049
Titre abrégé: Molecules
Pays: Switzerland
ID NLM: 100964009
Informations de publication
Date de publication:
09 Jun 2020
09 Jun 2020
Historique:
received:
17
04
2020
revised:
05
06
2020
accepted:
06
06
2020
entrez:
13
6
2020
pubmed:
13
6
2020
medline:
13
2
2021
Statut:
epublish
Résumé
Recently, the photoexcited triplet state of porphyrin was proposed as a promising spin-label for pulsed dipolar electron paramagnetic resonance (EPR). Herein, we report the factors that determine the electron spin echo dephasing of the photoexcited porphyrin in a water-glycerol matrix. The electron spin relaxation of a water-soluble porphyrin was measured by Q-band EPR, and the temperature dependence and the effect of solvent deuteration on the relaxation times were studied. The phase memory relaxation rate (1/T
Identifiants
pubmed: 32527023
pii: molecules25112677
doi: 10.3390/molecules25112677
pmc: PMC7321249
pii:
doi:
Substances chimiques
Porphyrins
0
Spin Labels
0
Water
059QF0KO0R
Glycerol
PDC6A3C0OX
Serum Albumin, Human
ZIF514RVZR
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Subventions
Organisme : Russian Science Foundation
ID : 18-73-00292
Organisme : Ministry of Science and Higher Education of the Russian Federation
ID : 14.W03.31.0034
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