Spontaneous Adsorption of a Co-Phthalocyanine Ionic Derivative on HOPG. An In Situ EPR Study

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F14%3A10210469" target="_blank" >RIV/00216208:11310/14:10210469 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388955:_____/14:00427761 RIV/61388963:_____/14:00427761

Výsledek na webu

<a href="http://dx.doi.org/10.1021/jp410851k" target="_blank" >http://dx.doi.org/10.1021/jp410851k</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/jp410851k" target="_blank" >10.1021/jp410851k</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Spontaneous Adsorption of a Co-Phthalocyanine Ionic Derivative on HOPG. An In Situ EPR Study

Popis výsledku v původním jazyce

The spontaneous adsorption of [N,N',N '',N'''-tetramethyltetra-3,4-pyridino-porphyrazino-Co(II)] ([CoTmtppa](4+)) from an aqueous solution onto highly ordered pyrolytic graphite (HOPG) was followed by in situ electron paramagnetic resonance (EPR). The solution of [CoTmtppa](4+)(CH3SO4)(4)(-) exhibits no EPR signal in the temperature range from 120 to 293 K. At room temperature, on the other hand, the EPR spectra of both spontaneously adsorbed and powdered [CoTmtppa](4+) were unambiguously identified bythe spectral simulations and quantum chemical calculations. The results indicated different geometries for the powdered and adsorbed samples. The time evolution of the EPR spectrum of [CoTmtppa](4+) and that of HOPG during the adsorption made it possibleto obtain a kinetic picture of the process. Finally, the structure and the redox stability of the magnetically active [CoTmtppa](4+) molecular film on HOPG was studied by atomic force microscopy (AFM), X-ray photoelectron spectroscopy (X

Název v anglickém jazyce

Spontaneous Adsorption of a Co-Phthalocyanine Ionic Derivative on HOPG. An In Situ EPR Study

Popis výsledku anglicky

The spontaneous adsorption of [N,N',N '',N'''-tetramethyltetra-3,4-pyridino-porphyrazino-Co(II)] ([CoTmtppa](4+)) from an aqueous solution onto highly ordered pyrolytic graphite (HOPG) was followed by in situ electron paramagnetic resonance (EPR). The solution of [CoTmtppa](4+)(CH3SO4)(4)(-) exhibits no EPR signal in the temperature range from 120 to 293 K. At room temperature, on the other hand, the EPR spectra of both spontaneously adsorbed and powdered [CoTmtppa](4+) were unambiguously identified bythe spectral simulations and quantum chemical calculations. The results indicated different geometries for the powdered and adsorbed samples. The time evolution of the EPR spectrum of [CoTmtppa](4+) and that of HOPG during the adsorption made it possibleto obtain a kinetic picture of the process. Finally, the structure and the redox stability of the magnetically active [CoTmtppa](4+) molecular film on HOPG was studied by atomic force microscopy (AFM), X-ray photoelectron spectroscopy (X

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/GA14-31419S" target="_blank" >GA14-31419S: Počítačový design minimalistických metalopeptidů jako cesta k rozluštění katalytické účinnosti metaloproteinů</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Journal of Physical Chemistry C

ISSN

1932-7447

e-ISSN

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Svazek periodika

118

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

4198-4206

Kód UT WoS článku

000332188100038

EID výsledku v databázi Scopus

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