Cited by 28Photochemistry and Electron Transfer StudiesSpectroscopy and Quantum Chemical StudiesLuminescence and Fluorescent Materials

Hydrogen-Bond-Assisted Excited-State Deactivation at Liquid/Water Interfaces

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Fita, Piotr, Fedoseeva, Marina, Vauthey, Eric·2011·Langmuir

Abstract

The excited-state dynamics of eosin B (EB) at dodecane/water and decanol/water interfaces has been investigated with polarization-dependent and time-resolved surface second harmonic generation. The results of the polarization-dependent measurements vary substantially with (1) the EB concentration, (2) the age of the sample, and (3) the nature of the organic phase. All of these effects are ascribed to the formation of EB aggregates at the interface. Aggregation also manifests itself in the time-resolved measurements as a substantial shortening of the excited-state lifetime of EB. However, independently of the dye concentration used, the excited-state lifetime of EB at both dodecane/water and decanol/water interfaces is much longer than in bulk water, where the excited-state population undergoes hydrogen-bond-assisted non-radiative deactivation in a few picoseconds. These results indicate that hydrogen bonding between EB and water molecules at liquid/water interfaces is either much less efficient than in bulk water or does not enhance non-radiative deactivation. This strong increase of the excited-state lifetime of EB at liquid/water interfaces opens promising avenues of applying this molecule as a fluorescent interfacial probe.

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Crossref · 10.1021/la104801h

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Authors
Fita, P., Fedoseeva, M., & Vauthey, E.
Affiliations
University of Geneva (CH)
Corresponding author
Vauthey, Eric
Venue
Langmuir
Published
2011-03-15
Volume
27
Issue
8
Pages
4645-4652
ISSN
  • 0743-7463 (ISSN-L)
  • 1520-5827
OpenAlex
W2008818815
Cited by
28
References
55
Citations by year
2025: 3 · 2022: 3 · 2021: 1 · 2020: 1 · 2018: 3 · 2017: 3 · 2016: 1 · 2015: 2 · 2014: 4 · 2013: 3 · 2012: 4
FWCI
2.34
Type
journal article
Language
en
Open access
Licence
other-oa
Locations
  • Langmuir (publishedVersion)
  • PubMed (publishedVersion)
  • Archive ouverte UNIGE (University of Geneva) (publishedVersion, other-oa)
  • Archive ouverte UNIGE (University of Geneva) (submittedVersion, cc-by)
Funders
  • Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (115942, 200020)
  • Fundacja na rzecz Nauki Polskiej
  • Université de Genève
Topics
  • Physical Sciences › Chemistry › Physical and Theoretical Chemistry › Photochemistry and Electron Transfer Studies
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Spectroscopy and Quantum Chemical Studies
  • Physical Sciences › Materials Science › Materials Chemistry › Luminescence and Fluorescent Materials
Keywords
eosin B, excited-state dynamics, hydrogen bonding, non-radiative deactivation, excited state lifetime, dye aggregation, dodecane/water interface, surface second harmonic generation

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