Ultraviolet photochemical reaction of [Fe(III)(C2O4)3]3MINUS SIGN in aqueous solutions studied by femtosecond time-resolved X-ray absorption spectroscopy using an X-ray free electron laser

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F15%3A43900337" target="_blank" >RIV/60461373:22340/15:43900337 - isvavai.cz</a>

Výsledek na webu

<a href="http://scitation.aip.org/content/aca/journal/sdy/2/3/10.1063/1.4918803" target="_blank" >http://scitation.aip.org/content/aca/journal/sdy/2/3/10.1063/1.4918803</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/1.4918803" target="_blank" >10.1063/1.4918803</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Ultraviolet photochemical reaction of [Fe(III)(C2O4)3]3MINUS SIGN in aqueous solutions studied by femtosecond time-resolved X-ray absorption spectroscopy using an X-ray free electron laser

Popis výsledku v původním jazyce

Time-resolved X-ray absorption spectroscopy was performed for aqueous ammonium iron(III) oxalate trihydrate solutions using an X-ray free electron laser and a synchronized ultraviolet laser. The spectral and time resolutions of the experiment were 1.3 eVand 200 fs, respectively. A femtosecond 268 nm pulse was employed to excite [Fe(III)(C2O4)(3)](3-) in solution from the high-spin ground electronic state to ligand-to-metal charge transfer state(s), and the subsequent dynamics were studied by observingthe time-evolution of the X-ray absorption spectrum near the Fe K-edge. Upon 268 nm photoexcitation, the Fe K-edge underwent a red-shift by more than 4 eV within 140 fs; however, the magnitude of the redshift subsequently diminished within 3 ps. The Fe K-edge of the photoproduct remained lower in energy than that of [Fe(III)(C2O4)(3)](3-). The observed red-shift of the Fe K-edge and the spectral feature of the product indicate that Fe(III) is upon excitation immediately photoreduced to F

Název v anglickém jazyce

Ultraviolet photochemical reaction of [Fe(III)(C2O4)3]3MINUS SIGN in aqueous solutions studied by femtosecond time-resolved X-ray absorption spectroscopy using an X-ray free electron laser

Popis výsledku anglicky

Time-resolved X-ray absorption spectroscopy was performed for aqueous ammonium iron(III) oxalate trihydrate solutions using an X-ray free electron laser and a synchronized ultraviolet laser. The spectral and time resolutions of the experiment were 1.3 eVand 200 fs, respectively. A femtosecond 268 nm pulse was employed to excite [Fe(III)(C2O4)(3)](3-) in solution from the high-spin ground electronic state to ligand-to-metal charge transfer state(s), and the subsequent dynamics were studied by observingthe time-evolution of the X-ray absorption spectrum near the Fe K-edge. Upon 268 nm photoexcitation, the Fe K-edge underwent a red-shift by more than 4 eV within 140 fs; however, the magnitude of the redshift subsequently diminished within 3 ps. The Fe K-edge of the photoproduct remained lower in energy than that of [Fe(III)(C2O4)(3)](3-). The observed red-shift of the Fe K-edge and the spectral feature of the product indicate that Fe(III) is upon excitation immediately photoreduced to F

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

<a href="/cs/project/GA13-34168S" target="_blank" >GA13-34168S: Ab initio simulace rentgenové fotodynamiky a spektroskopie ve vodných roztocích</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Structural Dynamics

ISSN

2329-7778

e-ISSN

—

Svazek periodika

2

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

20

Strana od-do

034901

Kód UT WoS článku

000357690900001

EID výsledku v databázi Scopus

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