Effect of Freezing out Vibrational Modes on Gas-Phase Fluorescence Spectra of Small Ionic Dyes

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Effect of Freezing out Vibrational Modes on Gas-Phase Fluorescence Spectra of Small Ionic Dyes. / Vogt, Emil; Langeland, Jeppe; Kjær, Christina; Lindkvist, Thomas Toft; Kjaergaard, Henrik G.; Nielsen, Steen Brøndsted.

I: Journal of Physical Chemistry Letters, Bind 12, Nr. 46, 2021, s. 11346-11352.

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt

Harvard

Vogt, E, Langeland, J, Kjær, C, Lindkvist, TT, Kjaergaard, HG & Nielsen, SB 2021, 'Effect of Freezing out Vibrational Modes on Gas-Phase Fluorescence Spectra of Small Ionic Dyes', Journal of Physical Chemistry Letters, bind 12, nr. 46, s. 11346-11352. https://doi.org/10.1021/acs.jpclett.1c03259

APA

Vogt, E., Langeland, J., Kjær, C., Lindkvist, T. T., Kjaergaard, H. G., & Nielsen, S. B. (2021). Effect of Freezing out Vibrational Modes on Gas-Phase Fluorescence Spectra of Small Ionic Dyes. Journal of Physical Chemistry Letters, 12(46), 11346-11352. https://doi.org/10.1021/acs.jpclett.1c03259

Vancouver

Vogt E, Langeland J, Kjær C, Lindkvist TT, Kjaergaard HG, Nielsen SB. Effect of Freezing out Vibrational Modes on Gas-Phase Fluorescence Spectra of Small Ionic Dyes. Journal of Physical Chemistry Letters. 2021;12(46):11346-11352. https://doi.org/10.1021/acs.jpclett.1c03259

Author

Vogt, Emil ; Langeland, Jeppe ; Kjær, Christina ; Lindkvist, Thomas Toft ; Kjaergaard, Henrik G. ; Nielsen, Steen Brøndsted. / Effect of Freezing out Vibrational Modes on Gas-Phase Fluorescence Spectra of Small Ionic Dyes. I: Journal of Physical Chemistry Letters. 2021 ; Bind 12, Nr. 46. s. 11346-11352.

Bibtex

@article{364e9e87fefe495882c4fc3fefe1f963,

title = "Effect of Freezing out Vibrational Modes on Gas-Phase Fluorescence Spectra of Small Ionic Dyes",

abstract = "While action spectroscopy of cold molecular ions is a well-established technique to provide vibrationally resolved absorption features, fluorescence experiments are still challenging. Here we report the fluorescence spectra of pyronin-Y and resorufin ions at 100 K using a newly constructed setup. Spectra narrow upon cooling, and the emission maxima blueshift. Temperature effects are attributed to the population of vibrational excited levels in S1, and that frequencies are lower in S1 than in S0. This picture is supported by calculated spectra based on a Franck-Condon model that not only predicts the observed change in maximum, but also assigns Franck-Condon active vibrations. In-plane vibrational modes that preserve the mirror plane present in both S0 and S1 of resorufin and pyronin Y account for most of the observed vibrational bands. Finally, at low temperatures, it is important to pick an excitation wavelength as far to the red as possible to not reheat the ions. ",

author = "Emil Vogt and Jeppe Langeland and Christina Kj{\ae}r and Lindkvist, {Thomas Toft} and Kjaergaard, {Henrik G.} and Nielsen, {Steen Br{\o}ndsted}",

note = "Publisher Copyright: {\textcopyright} 2021 American Chemical Society.",

year = "2021",

doi = "10.1021/acs.jpclett.1c03259",

language = "English",

volume = "12",

pages = "11346--11352",

journal = "Journal of Physical Chemistry Letters",

issn = "1948-7185",

publisher = "American Chemical Society",

number = "46",

}

RIS

TY - JOUR

T1 - Effect of Freezing out Vibrational Modes on Gas-Phase Fluorescence Spectra of Small Ionic Dyes

AU - Vogt, Emil

AU - Langeland, Jeppe

AU - Kjær, Christina

AU - Lindkvist, Thomas Toft

AU - Kjaergaard, Henrik G.

AU - Nielsen, Steen Brøndsted

PY - 2021

Y1 - 2021

N2 - While action spectroscopy of cold molecular ions is a well-established technique to provide vibrationally resolved absorption features, fluorescence experiments are still challenging. Here we report the fluorescence spectra of pyronin-Y and resorufin ions at 100 K using a newly constructed setup. Spectra narrow upon cooling, and the emission maxima blueshift. Temperature effects are attributed to the population of vibrational excited levels in S1, and that frequencies are lower in S1 than in S0. This picture is supported by calculated spectra based on a Franck-Condon model that not only predicts the observed change in maximum, but also assigns Franck-Condon active vibrations. In-plane vibrational modes that preserve the mirror plane present in both S0 and S1 of resorufin and pyronin Y account for most of the observed vibrational bands. Finally, at low temperatures, it is important to pick an excitation wavelength as far to the red as possible to not reheat the ions.

AB - While action spectroscopy of cold molecular ions is a well-established technique to provide vibrationally resolved absorption features, fluorescence experiments are still challenging. Here we report the fluorescence spectra of pyronin-Y and resorufin ions at 100 K using a newly constructed setup. Spectra narrow upon cooling, and the emission maxima blueshift. Temperature effects are attributed to the population of vibrational excited levels in S1, and that frequencies are lower in S1 than in S0. This picture is supported by calculated spectra based on a Franck-Condon model that not only predicts the observed change in maximum, but also assigns Franck-Condon active vibrations. In-plane vibrational modes that preserve the mirror plane present in both S0 and S1 of resorufin and pyronin Y account for most of the observed vibrational bands. Finally, at low temperatures, it is important to pick an excitation wavelength as far to the red as possible to not reheat the ions.

U2 - 10.1021/acs.jpclett.1c03259

DO - 10.1021/acs.jpclett.1c03259

M3 - Journal article

C2 - 34780698

AN - SCOPUS:85120004525

VL - 12

SP - 11346

EP - 11352

JO - Journal of Physical Chemistry Letters

JF - Journal of Physical Chemistry Letters

SN - 1948-7185

IS - 46

ER -

ID: 286858336

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