Limits...
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

TEM images. a Pristine multiwalled carbon nanotubes (MWCNTs). b The mechanical mixture of carbon nanotubes with the poly2,7-NAF.DM. The MWCNTs/polymer ratio was 1:10 (sample 5 in Table 1). c Carbon nanotubes with chemisorbed layer of the poly2,7-NAF.DM. Chemisorption was realized via in situ grafted polymerization of the monomer on the nanotubes surface functionalized with vinyl trialkoxysilane. The MWCNTs/poly2,7-NAF.DM ratio was 1:40 (sample 7 in Table 1)
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4835396&req=5

Fig5: TEM images. a Pristine multiwalled carbon nanotubes (MWCNTs). b The mechanical mixture of carbon nanotubes with the poly2,7-NAF.DM. The MWCNTs/polymer ratio was 1:10 (sample 5 in Table 1). c Carbon nanotubes with chemisorbed layer of the poly2,7-NAF.DM. Chemisorption was realized via in situ grafted polymerization of the monomer on the nanotubes surface functionalized with vinyl trialkoxysilane. The MWCNTs/poly2,7-NAF.DM ratio was 1:40 (sample 7 in Table 1)

Mentions: Implementation of chemisorption with simultaneous polymerization of the monomer on the surface of the vinylated nanotubes results in formation of homogeneous and amorphous polymeric layer. It was confirmed by TEM images (Fig. 5c). For mechanical mixture, nanotube/poly2,7-NAF.DM material contains a separated phase of polymer and carrier (Fig. 5b).Fig. 5


Immobilization of Polymeric Luminophor on Nanoparticles Surface.

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

TEM images. a Pristine multiwalled carbon nanotubes (MWCNTs). b The mechanical mixture of carbon nanotubes with the poly2,7-NAF.DM. The MWCNTs/polymer ratio was 1:10 (sample 5 in Table 1). c Carbon nanotubes with chemisorbed layer of the poly2,7-NAF.DM. Chemisorption was realized via in situ grafted polymerization of the monomer on the nanotubes surface functionalized with vinyl trialkoxysilane. The MWCNTs/poly2,7-NAF.DM ratio was 1:40 (sample 7 in Table 1)
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

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

Fig5: TEM images. a Pristine multiwalled carbon nanotubes (MWCNTs). b The mechanical mixture of carbon nanotubes with the poly2,7-NAF.DM. The MWCNTs/polymer ratio was 1:10 (sample 5 in Table 1). c Carbon nanotubes with chemisorbed layer of the poly2,7-NAF.DM. Chemisorption was realized via in situ grafted polymerization of the monomer on the nanotubes surface functionalized with vinyl trialkoxysilane. The MWCNTs/poly2,7-NAF.DM ratio was 1:40 (sample 7 in Table 1)
Mentions: Implementation of chemisorption with simultaneous polymerization of the monomer on the surface of the vinylated nanotubes results in formation of homogeneous and amorphous polymeric layer. It was confirmed by TEM images (Fig. 5c). For mechanical mixture, nanotube/poly2,7-NAF.DM material contains a separated phase of polymer and carrier (Fig. 5b).Fig. 5

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