Magnetic and Surface Properties of Metallophthalocyanines (M = Cu, Fe) Grafted Polyethylene

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F44555601%3A13440%2F18%3A43893745" target="_blank" >RIV/44555601:13440/18:43893745 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22310/18:43916707

Výsledek na webu

<a href="http://dx.doi.org/10.1021/acs.jpcc.7b10984" target="_blank" >http://dx.doi.org/10.1021/acs.jpcc.7b10984</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.jpcc.7b10984" target="_blank" >10.1021/acs.jpcc.7b10984</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Magnetic and Surface Properties of Metallophthalocyanines (M = Cu, Fe) Grafted Polyethylene

Popis výsledku v původním jazyce

To employ advantageous tunable magnetic properties of metal phthalocyanines (Pcs) in practical devices it is necessary to bind them to solid substrates. A simple) method to bind Cu(II) and Fe(III) sulfonated phthalocyanines on a plasma-treated surface of polyethylene (PE) is proposed. Formation of reactive centers (radicals) on the PE surface after plasma treatment was observed in electron-spin resonance (ESR) spectra at 330 and 350 mT. The signal at 350 mT disappears after grafting of the Pcs, which suggests the radical is spent on formation of a chemical bond. Successful grafting of Pcs was also confirmed by X-ray photoelectron spectroscopy and SEM-EDS measurements. In UV-vis spectra Q and B bands typical for the pi-pi interaction in Pcs were observed at 620 and 340 nm, respectively. Splitting of the Q band occurred due to a reduction in the symmetry of the peripherally substituted Pcs. Interestingly, a lower concentration of CuPc solution during the grafting process leads to a higher amount grafted to the surface. In the case of FePc the optimum grafting concentration is higher. The ESR spectra of PE samples with grafted FePc were similar to the bulk Pcs with the high-spin state (S = 5/2) of d(5) Fe(III) ions.

Název v anglickém jazyce

Magnetic and Surface Properties of Metallophthalocyanines (M = Cu, Fe) Grafted Polyethylene

Popis výsledku anglicky

To employ advantageous tunable magnetic properties of metal phthalocyanines (Pcs) in practical devices it is necessary to bind them to solid substrates. A simple) method to bind Cu(II) and Fe(III) sulfonated phthalocyanines on a plasma-treated surface of polyethylene (PE) is proposed. Formation of reactive centers (radicals) on the PE surface after plasma treatment was observed in electron-spin resonance (ESR) spectra at 330 and 350 mT. The signal at 350 mT disappears after grafting of the Pcs, which suggests the radical is spent on formation of a chemical bond. Successful grafting of Pcs was also confirmed by X-ray photoelectron spectroscopy and SEM-EDS measurements. In UV-vis spectra Q and B bands typical for the pi-pi interaction in Pcs were observed at 620 and 340 nm, respectively. Splitting of the Q band occurred due to a reduction in the symmetry of the peripherally substituted Pcs. Interestingly, a lower concentration of CuPc solution during the grafting process leads to a higher amount grafted to the surface. In the case of FePc the optimum grafting concentration is higher. The ESR spectra of PE samples with grafted FePc were similar to the bulk Pcs with the high-spin state (S = 5/2) of d(5) Fe(III) ions.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

The journal of physical chemistry C

ISSN

1932-7447

e-ISSN

—

Svazek periodika

122

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

1396-1403

Kód UT WoS článku

000423140500044

EID výsledku v databázi Scopus

2-s2.0-85041439969