Green-light ionization of 3-aminoperylene in SDS micelles-a promising access to hydrated electrons despite a myth debunked

Publication type:
Journal article
Metadata:
Autoren
  • Tim Kohlmann
  • Robert Naumann
  • Christoph Kerzig
  • Martin Goez
Autoren-URL
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000395697000008&DestLinkType=FullRecord&DestApp=WOS_CPL
DOI
10.1039/c6pp00403b
eISSN
1474-9092
Externe Identifier
  • Clarivate Analytics Document Solution ID: EN0JV
  • PubMed Identifier: 27966718
ISSN
1474-905X
Ausgabe der Veröffentlichung
2
Zeitschrift
PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
Paginierung
185 - 192
Datum der Veröffentlichung
2017
Status
Published
Titel
Green-light ionization of 3-aminoperylene in SDS micelles-a promising access to hydrated electrons despite a myth debunked
Sub types
  • Article
Ausgabe der Zeitschrift
16

Data source: Web of Science (Lite)

Other metadata sources:
Autoren
  • Tim Kohlmann
  • Robert Naumann
  • Christoph Kerzig
  • Martin Goez
DOI
10.1039/c6pp00403b
eISSN
1474-9092
ISSN
1474-905X
Ausgabe der Veröffentlichung
2
Zeitschrift
Photochemical & Photobiological Sciences
Sprache
en
Online publication date
2020
Paginierung
185 - 192
Datum der Veröffentlichung
2017
Status
Published
Herausgeber
Springer Science and Business Media LLC
Herausgeber URL
http://dx.doi.org/10.1039/c6pp00403b
Datum der Datenerfassung
2022
Titel
Green-light ionization of 3-aminoperylene in SDS micelles—a promising access to hydrated electrons despite a myth debunked
Ausgabe der Zeitschrift
16

Data source: Crossref

Abstract
Using an improved methodology, we have carefully reinvestigated the title reaction by laser flash photolysis and disproved an earlier study (J. K. Thomas and P. Piciulo, J. Am. Chem. Soc., 1978, 100, 3239), which claimed this green-light ionization to be monophotonic, the only instance of such a scenario ever reported for a stable compound. We show it to be biphotonic instead, in accordance with thermodynamic considerations, and present a photokinetic model that accurately represents the intensity dependences throughout the whole excitation range in the green (532 nm) and the near UV (355 nm), up to near-quantitative electron release in the latter case. A major artifact deceptively similar to a chemical decay arises from an SDS-related laser-induced turbidity but can be eliminated by difference experiments or careful selection of excitation intensities and temporal windows. The ionization step is not accompanied by side processes, and affords an extremely long-lived (0.35 s) radical cation remaining solubilized. The micelles completely block attacks of hydrated electrons or hydroxyl radicals on the starting material and its radical cation but allow a post-ionization regeneration by high concentrations of the hydrophilic ascorbate monoanion.
Addresses
  • Martin-Luther-Universität Halle-Wittenberg, Institut für Chemie, Kurt-Mothes-Str. 2, D-06120 Halle, Saale, Germany. martin.goez@chemie.uni-halle.de.
Autoren
  • Tim Kohlmann
  • Robert Naumann
  • Christoph Kerzig
  • Martin Goez
DOI
10.1039/c6pp00403b
eISSN
1474-9092
Externe Identifier
  • PubMed Identifier: 27966718
Open access
false
ISSN
1474-905X
Ausgabe der Veröffentlichung
2
Zeitschrift
Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology
Schlüsselwörter
  • Ions
  • Sodium Dodecyl Sulfate
  • Perylene
  • Catalysis
  • Micelles
  • Photolysis
  • Light
  • Thermodynamics
Sprache
eng
Medium
Print
Paginierung
185 - 192
Datum der Veröffentlichung
2017
Status
Published
Datum der Datenerfassung
2016
Titel
Green-light ionization of 3-aminoperylene in SDS micelles-a promising access to hydrated electrons despite a myth debunked.
Sub types
  • Journal Article
Ausgabe der Zeitschrift
16

Data source: Europe PubMed Central

Abstract
Using an improved methodology, we have carefully reinvestigated the title reaction by laser flash photolysis and disproved an earlier study (J. K. Thomas and P. Piciulo, J. Am. Chem. Soc., 1978, 100, 3239), which claimed this green-light ionization to be monophotonic, the only instance of such a scenario ever reported for a stable compound. We show it to be biphotonic instead, in accordance with thermodynamic considerations, and present a photokinetic model that accurately represents the intensity dependences throughout the whole excitation range in the green (532 nm) and the near UV (355 nm), up to near-quantitative electron release in the latter case. A major artifact deceptively similar to a chemical decay arises from an SDS-related laser-induced turbidity but can be eliminated by difference experiments or careful selection of excitation intensities and temporal windows. The ionization step is not accompanied by side processes, and affords an extremely long-lived (0.35 s) radical cation remaining solubilized. The micelles completely block attacks of hydrated electrons or hydroxyl radicals on the starting material and its radical cation but allow a post-ionization regeneration by high concentrations of the hydrophilic ascorbate monoanion.
Autoren
  • Tim Kohlmann
  • Robert Naumann
  • Christoph Kerzig
  • Martin Goez
Autoren-URL
https://www.ncbi.nlm.nih.gov/pubmed/27966718
DOI
10.1039/c6pp00403b
eISSN
1474-9092
Ausgabe der Veröffentlichung
2
Zeitschrift
Photochem Photobiol Sci
Schlüsselwörter
  • Catalysis
  • Ions
  • Light
  • Micelles
  • Perylene
  • Photolysis
  • Sodium Dodecyl Sulfate
  • Thermodynamics
Sprache
eng
Country
England
Paginierung
185 - 192
Datum der Veröffentlichung
2017
Status
Published
Datum, an dem der Datensatz öffentlich gemacht wurde
2017
Titel
Green-light ionization of 3-aminoperylene in SDS micelles-a promising access to hydrated electrons despite a myth debunked.
Sub types
  • Journal Article
Ausgabe der Zeitschrift
16

Data source: PubMed

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