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Immobilization of Polymeric Luminophor on Nanoparticles Surface.

Bolbukh Y, Podkoscielna B, Lipke A, Bartnicki A, Gawdzik B, Tertykh V - Nanoscale Res Lett (2016)

Bottom Line: Obtained results confirm the chemisorption of luminophor on the nanotubes and silica nanoparticles at the elaborated synthesis techniques.The microstructure of 2,7-NAF.DM molecules after chemisorption was found to be not changed.The elaborated modification approach allows one to obtain nanoparticles uniformly covered with polymeric luminophor.

View Article: PubMed Central - PubMed

Affiliation: Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine, 17 General Naumov Str., 03164, Kyiv, Ukraine. yu_bolbukh@yahoo.com.

ABSTRACT
Polymeric luminophors with reduced toxicity are of the priorities in the production of lighting devices, sensors, detectors, bioassays or diagnostic systems. The aim of this study was to develop a method of immobilization of the new luminophor on a surface of nanoparticles and investigation of the structure of the grafted layer. Monomer 2,7-(2-hydroxy-3-methacryloyloxypropoxy)naphthalene (2,7-NAF.DM) with luminophoric properties was immobilized on silica and carbon nanotubes in two ways: mechanical mixing with previously obtained polymer and by in situ oligomerization with chemisorption after carrier's modification with vinyl groups. The attached polymeric (or oligomeric) surface layer was studied using thermal and spectral techniques. Obtained results confirm the chemisorption of luminophor on the nanotubes and silica nanoparticles at the elaborated synthesis techniques. The microstructure of 2,7-NAF.DM molecules after chemisorption was found to be not changed. The elaborated modification approach allows one to obtain nanoparticles uniformly covered with polymeric luminophor.

No MeSH data available.


Related in: MedlinePlus

Excitation and emission spectra. This shows excitation (*) and emission spectra of the neat polymer (2,7-NAF.DM, λexc = 300 nm) and samples: 4* and 4 the silica with chemisorbed 2,7-NAF.DM; 5* and 5 carbon nanotubes mechanically mixed with the poly2,7-NAF.DM with the MWCNTs/polymer ratio 1:10; 6* and 6 carbon nanotubes with the poly2,7-NAF.DM chemisorbed via in situ grafted polymerization with the MWCNTs/polymer ratio 1:10 (spectra measured at λexc of 450 nm and λdet of 550 nm); 7* carbon nanotubes with the poly2,7-NAF.DM chemisorbed via in situ grafted polymerization with the MWCNTs/polymer ratio 1:40 (spectra measured at λexc of 450 or 300 nm)
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Fig7: Excitation and emission spectra. This shows excitation (*) and emission spectra of the neat polymer (2,7-NAF.DM, λexc = 300 nm) and samples: 4* and 4 the silica with chemisorbed 2,7-NAF.DM; 5* and 5 carbon nanotubes mechanically mixed with the poly2,7-NAF.DM with the MWCNTs/polymer ratio 1:10; 6* and 6 carbon nanotubes with the poly2,7-NAF.DM chemisorbed via in situ grafted polymerization with the MWCNTs/polymer ratio 1:10 (spectra measured at λexc of 450 nm and λdet of 550 nm); 7* carbon nanotubes with the poly2,7-NAF.DM chemisorbed via in situ grafted polymerization with the MWCNTs/polymer ratio 1:40 (spectra measured at λexc of 450 or 300 nm)

Mentions: It has been found that the polymer chemisorption on the modified silica does not worsen its luminescent properties (Fig. 7, curve 4), whereas chemisorption on the modified nanotubes significantly reduces the intensity of excitation and emission bands at wavelengths characteristic for the pure polymer. Mechanical mixing of nanotubes with cured polymer has little effect on its luminescence but does not provide a sufficient composite’s uniformity.Fig. 7


Immobilization of Polymeric Luminophor on Nanoparticles Surface.

Bolbukh Y, Podkoscielna B, Lipke A, Bartnicki A, Gawdzik B, Tertykh V - Nanoscale Res Lett (2016)

Excitation and emission spectra. This shows excitation (*) and emission spectra of the neat polymer (2,7-NAF.DM, λexc = 300 nm) and samples: 4* and 4 the silica with chemisorbed 2,7-NAF.DM; 5* and 5 carbon nanotubes mechanically mixed with the poly2,7-NAF.DM with the MWCNTs/polymer ratio 1:10; 6* and 6 carbon nanotubes with the poly2,7-NAF.DM chemisorbed via in situ grafted polymerization with the MWCNTs/polymer ratio 1:10 (spectra measured at λexc of 450 nm and λdet of 550 nm); 7* carbon nanotubes with the poly2,7-NAF.DM chemisorbed via in situ grafted polymerization with the MWCNTs/polymer ratio 1:40 (spectra measured at λexc of 450 or 300 nm)
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4835396&req=5

Fig7: Excitation and emission spectra. This shows excitation (*) and emission spectra of the neat polymer (2,7-NAF.DM, λexc = 300 nm) and samples: 4* and 4 the silica with chemisorbed 2,7-NAF.DM; 5* and 5 carbon nanotubes mechanically mixed with the poly2,7-NAF.DM with the MWCNTs/polymer ratio 1:10; 6* and 6 carbon nanotubes with the poly2,7-NAF.DM chemisorbed via in situ grafted polymerization with the MWCNTs/polymer ratio 1:10 (spectra measured at λexc of 450 nm and λdet of 550 nm); 7* carbon nanotubes with the poly2,7-NAF.DM chemisorbed via in situ grafted polymerization with the MWCNTs/polymer ratio 1:40 (spectra measured at λexc of 450 or 300 nm)
Mentions: It has been found that the polymer chemisorption on the modified silica does not worsen its luminescent properties (Fig. 7, curve 4), whereas chemisorption on the modified nanotubes significantly reduces the intensity of excitation and emission bands at wavelengths characteristic for the pure polymer. Mechanical mixing of nanotubes with cured polymer has little effect on its luminescence but does not provide a sufficient composite’s uniformity.Fig. 7

Bottom Line: Obtained results confirm the chemisorption of luminophor on the nanotubes and silica nanoparticles at the elaborated synthesis techniques.The microstructure of 2,7-NAF.DM molecules after chemisorption was found to be not changed.The elaborated modification approach allows one to obtain nanoparticles uniformly covered with polymeric luminophor.

View Article: PubMed Central - PubMed

Affiliation: Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine, 17 General Naumov Str., 03164, Kyiv, Ukraine. yu_bolbukh@yahoo.com.

ABSTRACT
Polymeric luminophors with reduced toxicity are of the priorities in the production of lighting devices, sensors, detectors, bioassays or diagnostic systems. The aim of this study was to develop a method of immobilization of the new luminophor on a surface of nanoparticles and investigation of the structure of the grafted layer. Monomer 2,7-(2-hydroxy-3-methacryloyloxypropoxy)naphthalene (2,7-NAF.DM) with luminophoric properties was immobilized on silica and carbon nanotubes in two ways: mechanical mixing with previously obtained polymer and by in situ oligomerization with chemisorption after carrier's modification with vinyl groups. The attached polymeric (or oligomeric) surface layer was studied using thermal and spectral techniques. Obtained results confirm the chemisorption of luminophor on the nanotubes and silica nanoparticles at the elaborated synthesis techniques. The microstructure of 2,7-NAF.DM molecules after chemisorption was found to be not changed. The elaborated modification approach allows one to obtain nanoparticles uniformly covered with polymeric luminophor.

No MeSH data available.


Related in: MedlinePlus