Excitation Spectra and Stokes Shift Measurements of Single Organic Dyes at Room Temperature

M.H.W. Stopel, Christian Blum, Vinod Subramaniam

Research output: Contribution to journalArticleAcademicpeer-review

14 Citations (Scopus)

Abstract

We report measurements of excitation and emission spectra of single, polymer-embedded, perylene dye molecules at room temperature. From these measurements, we can derive the Stokes shift for each single molecule. We determined the distribution of excitation and emission peak energies and, thus, the distribution of single molecule Stokes shifts. Single molecule Stokes shifts have not been recorded to date, and the Stokes shift has often been assumed to be constant in single molecule studies. Our data show that the observed spectral heterogeneity in single molecule emission originates not only from synchronous energetic shifts of the excitation and the emission spectra but also from variations in the Stokes shift, speaking against the assumption of constant Stokes shift.
Original languageUndefined
Pages (from-to)3259-3264
Number of pages6
JournalJournal of physical chemistry letters
Volume5
Issue number18
DOIs
Publication statusPublished - 2014

Keywords

  • METIS-306436
  • IR-94971

Cite this

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title = "Excitation Spectra and Stokes Shift Measurements of Single Organic Dyes at Room Temperature",
abstract = "We report measurements of excitation and emission spectra of single, polymer-embedded, perylene dye molecules at room temperature. From these measurements, we can derive the Stokes shift for each single molecule. We determined the distribution of excitation and emission peak energies and, thus, the distribution of single molecule Stokes shifts. Single molecule Stokes shifts have not been recorded to date, and the Stokes shift has often been assumed to be constant in single molecule studies. Our data show that the observed spectral heterogeneity in single molecule emission originates not only from synchronous energetic shifts of the excitation and the emission spectra but also from variations in the Stokes shift, speaking against the assumption of constant Stokes shift.",
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language = "Undefined",
volume = "5",
pages = "3259--3264",
journal = "Journal of physical chemistry letters",
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Excitation Spectra and Stokes Shift Measurements of Single Organic Dyes at Room Temperature. / Stopel, M.H.W.; Blum, Christian; Subramaniam, Vinod.

In: Journal of physical chemistry letters, Vol. 5, No. 18, 2014, p. 3259-3264.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Excitation Spectra and Stokes Shift Measurements of Single Organic Dyes at Room Temperature

AU - Stopel, M.H.W.

AU - Blum, Christian

AU - Subramaniam, Vinod

PY - 2014

Y1 - 2014

N2 - We report measurements of excitation and emission spectra of single, polymer-embedded, perylene dye molecules at room temperature. From these measurements, we can derive the Stokes shift for each single molecule. We determined the distribution of excitation and emission peak energies and, thus, the distribution of single molecule Stokes shifts. Single molecule Stokes shifts have not been recorded to date, and the Stokes shift has often been assumed to be constant in single molecule studies. Our data show that the observed spectral heterogeneity in single molecule emission originates not only from synchronous energetic shifts of the excitation and the emission spectra but also from variations in the Stokes shift, speaking against the assumption of constant Stokes shift.

AB - We report measurements of excitation and emission spectra of single, polymer-embedded, perylene dye molecules at room temperature. From these measurements, we can derive the Stokes shift for each single molecule. We determined the distribution of excitation and emission peak energies and, thus, the distribution of single molecule Stokes shifts. Single molecule Stokes shifts have not been recorded to date, and the Stokes shift has often been assumed to be constant in single molecule studies. Our data show that the observed spectral heterogeneity in single molecule emission originates not only from synchronous energetic shifts of the excitation and the emission spectra but also from variations in the Stokes shift, speaking against the assumption of constant Stokes shift.

KW - METIS-306436

KW - IR-94971

U2 - 10.1021/jz501536a

DO - 10.1021/jz501536a

M3 - Article

VL - 5

SP - 3259

EP - 3264

JO - Journal of physical chemistry letters

JF - Journal of physical chemistry letters

SN - 1948-7185

IS - 18

ER -