Magnetic, Fluorescent, and Copolymeric Silicone Microspheres

Rankin, Jacqueline M.; Neelakantan, Nitin K.; Lundberg, Kimberly E.; Grzincic, Elissa M.; Murphy, Catherine J.; Suslick, Kenneth S.

doi:10.1002/advs.201500114

Cited by 11 publications

(13 citation statements)

References 31 publications

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“…Meanwhile, Fe 3 O 4 /[Eu(BA) 3 phen+Tb(BA) 3 phen]/PANI/PMMA composite microbelts, as a contrast sample, were also fabricated 55 by mixing spinning solution S a4 and spinning solution S b2 together at the volume ratio of 1:1 and electrospun using traditional single-spinneret electrospinning method to study the superiority of the structure of belt-shaped coaxial microcables. The other spinning parameters were the same as they were in the 60 fabrication of belt-shaped coaxial microcables.…”

Section: Fabrication Of Fe 3 O 4 /[Eu(ba) 3 Phen+tb(ba) 3 Phen]/pani/mentioning

confidence: 99%

“…The as-prepared Fe 3 O 4 NPs and [Fe 3 O 4 /PANI/PMMA]@{[Eu(BA) 3 phen+Tb(BA) 3 phen]/PMMA} belt-shaped coaxial microcables were examined by X-ray powder microscope (TEM, Jeol, JEM-2010, Tokyo, Japan). The beltshaped coaxial microcables were observed by a field emission scanning electron microscope (FESEM, Philips, XL-30 SFEG, Eindhoven, Netherlands) equipped with an energy-dispersive Xray spectrometer (EDS).…”

Section: Characterizationsmentioning

confidence: 99%

“…The excitation intensity is 20 increased with introducing more Tb(BA) 3 phen when monitored at 545 nm ( Figure 4A), while the excitation intensity is increased with the increase of Eu 3+ ion concentration ( Figure 4B) when the monitoring wavelength is 615 nm. It offers an approach to tune emission colors by adjusting the mass ratio of Eu(BA) 3 phen to Tb(BA) 3 …”

Section: Photoluminescence Propertymentioning

confidence: 99%

“…From the excitation and emission spectra of codoping samples, there exist two kinds of samples characteristic of red emission and green emission due to Eu 3+ and Tb 3+ ions in Y 2 O 3 host, respectively. Zeng 25 synthesized Gd 2 (WO 4 ) 3 structures which were good host matrixes and showed strong multi-color 70 photoluminescence (PL) emissions. Tunable emissions have been achieved in the Eu 3+ /Tb 3+ co-doped samples, owing to the strong absorption of tungstate ions.…”

Section: Introductionmentioning

confidence: 99%

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Novel flexible belt-shaped coaxial microcables with tunable multicolor luminescence, electrical conductivity and magnetism

Shao

Dong

et al. 2015

Phys. Chem. Chem. Phys.

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A novel type of flexible [Fe3O4/PANI/PMMA]@{[Eu(BA)3phen + Tb(BA)3phen]/PMMA} (PMMA = polymethyl methacrylate, BA = benzoic acid, phen = phenanthroline, PANI = polyaniline) belt-shaped coaxial microcable possessing electrical conductivity, magnetism and color-tunable photoluminescence has been successfully fabricated by electrospinning technology using a specially designed coaxial spinneret. Every strip of belt-shaped coaxial microcable is assembled with a Fe3O4/PANI/PMMA electrically conductive -magnetic bifunctional core and a [Eu(BA)3phen + Tb(BA)3phen]/PMMA insulative and photoluminescence-tunable shell. The conductivity of the core of belt-shaped coaxial microcables reaches up to the order of 10(-2) S cm(-1) and all belt-shaped coaxial microcables are insulated from each other. The tuning of emission color is possible by changing the Eu(3+)/Tb(3+) molar ratio of the belt-shaped coaxial microcables. The electrical conductivity, magnetic and photoluminescence properties of belt-shaped coaxial microcables can be tuned by adjusting the content of PANI, Fe3O4 nanoparticles (NPs) and rare earth complexes. More importantly, the proposed design idea and the construction technique are universal regarding the preparation of other multifunctional one-dimensional micromaterials.

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Section: Fabrication Of Fe 3 O 4 /[Eu(ba) 3 Phen+tb(ba) 3 Phen]/pani/mentioning

confidence: 99%

Section: Characterizationsmentioning

confidence: 99%

Section: Photoluminescence Propertymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Novel flexible belt-shaped coaxial microcables with tunable multicolor luminescence, electrical conductivity and magnetism

Shao

Dong

et al. 2015

Phys. Chem. Chem. Phys.

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“…The latter have been synthesized using methods such as ultrasonic spray pyrolysis [37] (<2 μm) and core-shell microfluidic extrusion [38] (>50 μm). However, most current work with magnetic microspheres occurs with commercially-available spheres in sizes ranging from 1 to 20 μm.…”

Section: Introductionmentioning

confidence: 99%

High-permeability functionalized silicone magnetic microspheres with low autofluorescence for biomedical applications

Evans

Ronecker

Han

et al. 2016

Materials Science and Engineering: C

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Functionalized magnetic microspheres are widely used for cell separations, isolation of proteins and other biomolecules, in vitro diagnostics, tissue engineering, and microscale force spectroscopy. We present here the synthesis and characterization of a silicone magnetic microsphere which can be produced in diameters ranging from 0.5 to 50 μm via emulsion polymerization of a silicone ferrofluid precursor. This bottom-up approach to synthesis ensures a uniform magnetic concentration across all sizes, leading to significant advances in magnetic force generation. We demonstrate that in a size range of 5–20 μm, these spheres supply a full order of magnitude greater magnetic force than leading commercial products. In addition, the unique silicone matrix exhibits autofluorescence two orders of magnitude lower than polystyrene microspheres. Finally, we demonstrate the ability to chemically functionalize our silicone microspheres using a standard EDC reaction, and show that our folate-functionalized silicone microspheres specifically bind to targeted HeLa and Jurkat cells. These spheres show tremendous potential for replacing magnetic polystyrene spheres in applications which require either large magnetic forces or minimal autofluorescence, since they represent order-of-magnitude improvements in each. In addition, the unique silicone matrix and proven biocompatibility suggest that they may be useful for encapsulation and targeted delivery of lipophilic pharmaceuticals.

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Fluorescent CdTe-QD-encoded nanocellulose microspheres by green spraying method

Guan

Song

et al. 2018

Cellulose

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Magnetic, Fluorescent, and Copolymeric Silicone Microspheres

Cited by 11 publications

References 31 publications

Novel flexible belt-shaped coaxial microcables with tunable multicolor luminescence, electrical conductivity and magnetism

Novel flexible belt-shaped coaxial microcables with tunable multicolor luminescence, electrical conductivity and magnetism

High-permeability functionalized silicone magnetic microspheres with low autofluorescence for biomedical applications

Fluorescent CdTe-QD-encoded nanocellulose microspheres by green spraying method

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