Incorporation of pyrene in polypyrrole/polystyrene magnetic beads.
Pyrene, a fluorescent dye, was incorporated into polystyrene particles coated with polypyrrole. The incorporation was achieved by treating the polypyrrole/polystyrene (PPy/PS) beads in a tetrahydrofuran (THF) solution of the pyrene fluorophore followed by rinsing with methanol. The polystyrene cores of the beads swell in THF, allowing penetration of pyrene molecules into the polystyrene structure. The addition of methanol causes contraction of the swollen polystyrene, which encapsulates the dye molecules inside the beads. It is shown that the polypyrrole coating is permeable with respect to both the dye and the solvent, allowing the transport of molecules between the polystyrene cores and the contacting solution. The polypyrrole adlayer can be used as a matrix for the incorporation of magnetic nanoparticles. Embedded particles provide magnetic functionality to the PPy/PS beads. It is demonstrated that the pyrene-loaded beads can be manipulated with an external magnetic field.
University of Warsaw, Department of Chemistry, Pasteura 1, 02-093 Warsaw, Poland.
Paulina
P
Głowala
University of Warsaw, Department of Chemistry, Pasteura 1, 02-093 Warsaw, Poland.
Adam
A
Budniak
University of Warsaw, Department of Chemistry, Pasteura 1, 02-093 Warsaw, Poland.
Pamela
P
Krug
University of Warsaw, Department of Chemistry, Pasteura 1, 02-093 Warsaw, Poland.
Barbara
B
Wysocka
University of Warsaw, Department of Chemistry, Pasteura 1, 02-093 Warsaw, Poland.
Sylwia
S
Berbeć
University of Warsaw, Department of Chemistry, Pasteura 1, 02-093 Warsaw, Poland.
Robert
R
Dec
University of Warsaw, Department of Chemistry, Pasteura 1, 02-093 Warsaw, Poland.
Izabela
I
Dołęga
University of Warsaw, Department of Chemistry, Pasteura 1, 02-093 Warsaw, Poland.
Kamil
K
Kacprzak
University of Warsaw, Department of Chemistry, Pasteura 1, 02-093 Warsaw, Poland.
Jarosław
J
Wojciechowski
University of Warsaw, Department of Chemistry, Pasteura 1, 02-093 Warsaw, Poland.
Jakub
J
Kawałko
University of Warsaw, Department of Chemistry, Pasteura 1, 02-093 Warsaw, Poland.
Paweł
P
Kępka
University of Warsaw, Department of Chemistry, Pasteura 1, 02-093 Warsaw, Poland.
Daria
D
Kępińska
University of Warsaw, Department of Chemistry, Pasteura 1, 02-093 Warsaw, Poland.
Krystyna
K
Kijewska
University of Warsaw, Department of Chemistry, Pasteura 1, 02-093 Warsaw, Poland. Electronic address: mmazur@chem.uw.edu.pl.
Maciej
M
Mazur
D005456:Fluorescent Dyes / Q000008:administration & dosage / Q000737:chemistry*; D005663:Furans / Q000737:chemistry; D060328:Magnetic Phenomena; D059346:Magnets / Q000737:chemistry*; D053758:Nanoparticles / Q000737:chemistry / Q000648:ultrastructure; D011108:Polymers / Q000737:chemistry*; D011137:Polystyrenes / Q000737:chemistry*; D011721:Pyrenes / Q000008:administration & dosage / Q000737:chemistry*; D011758:Pyrroles / Q000737:chemistry*
D005456:Fluorescent Dyes; D005663:Furans; D011108:Polymers; D011137:Polystyrenes; D011721:Pyrenes; D011758:Pyrroles; C067635:polypyrrole; C018674:tetrahydrofuran; C030984:pyrene
Core–shell particles; Magnetic nanoparticles; Polystyrene beads; Pyrene fluorescence