Direct comparison of molecular-beam vs liquid-phase pump-probe and two-dimensional spectroscopy on the example of azulene

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F22%3A10452407" target="_blank" >RIV/00216208:11320/22:10452407 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=gkwvsbNDXv" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=gkwvsbNDXv</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0088365" target="_blank" >10.1063/5.0088365</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Direct comparison of molecular-beam vs liquid-phase pump-probe and two-dimensional spectroscopy on the example of azulene

Popis výsledku v původním jazyce

Although azulene&apos;s anomalous fluorescence originating from S(2) rather than from S(1) is a textbook example for the violation of Kasha&apos;s rule, an understanding of the underlying processes is still a subject of investigation. Here, we use action-based coherent two-dimensional electronic spectroscopy (2DES) to measure a single Liouville-space response pathway from S(0) via S(1) to the S(2) state of azulene. We directly compare this sequential excitation in the liquid phase detecting S(2) fluorescence and in a molecular beam detecting photoionized cations, using the S(2) anomalous emission to our advantage. We complement the 2DES study with pump-probe measurements of S(1) excitation dynamics, including vibrational relaxation and passage through a conical intersection. A direct comparison of the liquid and gas phase allows us to assess the effect of the solvent and the interplay of intra- and intermolecular energy relaxation.

Název v anglickém jazyce

Direct comparison of molecular-beam vs liquid-phase pump-probe and two-dimensional spectroscopy on the example of azulene

Popis výsledku anglicky

Although azulene&apos;s anomalous fluorescence originating from S(2) rather than from S(1) is a textbook example for the violation of Kasha&apos;s rule, an understanding of the underlying processes is still a subject of investigation. Here, we use action-based coherent two-dimensional electronic spectroscopy (2DES) to measure a single Liouville-space response pathway from S(0) via S(1) to the S(2) state of azulene. We directly compare this sequential excitation in the liquid phase detecting S(2) fluorescence and in a molecular beam detecting photoionized cations, using the S(2) anomalous emission to our advantage. We complement the 2DES study with pump-probe measurements of S(1) excitation dynamics, including vibrational relaxation and passage through a conical intersection. A direct comparison of the liquid and gas phase allows us to assess the effect of the solvent and the interplay of intra- and intermolecular energy relaxation.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Chemical Physics

ISSN

0021-9606

e-ISSN

1089-7690

Svazek periodika

157

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

044201

Kód UT WoS článku

000835325400003

EID výsledku v databázi Scopus

2-s2.0-85135433695