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Preparation and optical properties of novel bioactive photonic crystals obtained from core-shell poly(styrene/α-tert-butoxy-ω-vinylbenzyl-polyglycidol) microspheres.

Gosecka M, Griffete N, Mangeney C, Chehimi MM, Slomkowski S, Basinska T - Colloid Polym Sci (2011)

Bottom Line: Molar fraction of polyglycidol units in the interfacial layer of the microspheres determined by XPS was equal 42.6 and 34.0%, for the particles with D(n) equal 137 and 271 nm, respectively.Colloidal crystals from the aforementioned particles were prepared by deposition of particle suspensions on the glass slides and subsequent evaporation of water.The coating of particles with ovalbumin resulted in decreasing their refractive index from 1.58 to 1.52.

View Article: PubMed Central - PubMed

ABSTRACT
Optical properties of polymer microspheres with polystyrene cores and polyglycidol-enriched shells poly(styrene/α-tert-butoxy-ω-vinylbenzyl-polyglycidol) (P(S/PGL) particles with number average diameters D(n) determined by scanning electron microscopy equal 237 and 271 nm), were studied before and after immobilization of ovalbumin. The particles were synthesized by emulsifier-free emulsion copolymerization of styrene and polyglycidol macromonomer (poly(styrene/α-tert-butoxy-ω-vinylbenzyl-polyglycidol)) initiated with potassium persulfate. Molar fraction of polyglycidol units in the interfacial layer of the microspheres determined by XPS was equal 42.6 and 34.0%, for the particles with D(n) equal 137 and 271 nm, respectively. Colloidal crystals from the aforementioned particles were prepared by deposition of particle suspensions on the glass slides and subsequent evaporation of water. It was found that optical properties of colloidal crystals from the P(S/PGL) microspheres strongly depend on modification of their interfacial layer by covalent immobilization of ovalbumin. The coating of particles with ovalbumin resulted in decreasing their refractive index from 1.58 to 1.52.

No MeSH data available.


Related in: MedlinePlus

Diffraction spectra of colloidal crystals formed from P(S/PGL1), P(S/PGL2), P(S/PGL1)–OVA, and P(S/PGL2)–OVA microspheres
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Fig5: Diffraction spectra of colloidal crystals formed from P(S/PGL1), P(S/PGL2), P(S/PGL1)–OVA, and P(S/PGL2)–OVA microspheres

Mentions: The P(S/PGL)–OVA microsphere arrays were imaged by SEM in order to check their organization (see Fig. 4), and characterized by diffraction spectra with purpose to determine changes in the Bragg peak positions induced by the immobilized ovalbumin. These spectra registered at 90o for particle arrays P(S/PGL1), P(S/PGL2), P(S/PGL1)–OVA, and P(S/PGL2)–OVA microspheres are shown in Fig. 5.Fig. 4


Preparation and optical properties of novel bioactive photonic crystals obtained from core-shell poly(styrene/α-tert-butoxy-ω-vinylbenzyl-polyglycidol) microspheres.

Gosecka M, Griffete N, Mangeney C, Chehimi MM, Slomkowski S, Basinska T - Colloid Polym Sci (2011)

Diffraction spectra of colloidal crystals formed from P(S/PGL1), P(S/PGL2), P(S/PGL1)–OVA, and P(S/PGL2)–OVA microspheres
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3140920&req=5

Fig5: Diffraction spectra of colloidal crystals formed from P(S/PGL1), P(S/PGL2), P(S/PGL1)–OVA, and P(S/PGL2)–OVA microspheres
Mentions: The P(S/PGL)–OVA microsphere arrays were imaged by SEM in order to check their organization (see Fig. 4), and characterized by diffraction spectra with purpose to determine changes in the Bragg peak positions induced by the immobilized ovalbumin. These spectra registered at 90o for particle arrays P(S/PGL1), P(S/PGL2), P(S/PGL1)–OVA, and P(S/PGL2)–OVA microspheres are shown in Fig. 5.Fig. 4

Bottom Line: Molar fraction of polyglycidol units in the interfacial layer of the microspheres determined by XPS was equal 42.6 and 34.0%, for the particles with D(n) equal 137 and 271 nm, respectively.Colloidal crystals from the aforementioned particles were prepared by deposition of particle suspensions on the glass slides and subsequent evaporation of water.The coating of particles with ovalbumin resulted in decreasing their refractive index from 1.58 to 1.52.

View Article: PubMed Central - PubMed

ABSTRACT
Optical properties of polymer microspheres with polystyrene cores and polyglycidol-enriched shells poly(styrene/α-tert-butoxy-ω-vinylbenzyl-polyglycidol) (P(S/PGL) particles with number average diameters D(n) determined by scanning electron microscopy equal 237 and 271 nm), were studied before and after immobilization of ovalbumin. The particles were synthesized by emulsifier-free emulsion copolymerization of styrene and polyglycidol macromonomer (poly(styrene/α-tert-butoxy-ω-vinylbenzyl-polyglycidol)) initiated with potassium persulfate. Molar fraction of polyglycidol units in the interfacial layer of the microspheres determined by XPS was equal 42.6 and 34.0%, for the particles with D(n) equal 137 and 271 nm, respectively. Colloidal crystals from the aforementioned particles were prepared by deposition of particle suspensions on the glass slides and subsequent evaporation of water. It was found that optical properties of colloidal crystals from the P(S/PGL) microspheres strongly depend on modification of their interfacial layer by covalent immobilization of ovalbumin. The coating of particles with ovalbumin resulted in decreasing their refractive index from 1.58 to 1.52.

No MeSH data available.


Related in: MedlinePlus