Deep-Blue Fluorescent Particles via Microwave Heating of Polyacrylonitrile Dispersions.
This study presents a new method to produce fluorescent particles. Established methods are based on the incorporation of conjugated dye molecules into dielectric polymer matrices or preparation of colloids, which are composed of fluorescent conjugated polymer. By contrast, this study presents a method where dielectric polyacrylonitrile is exposed to microwave radiation leading to an intramolecular cyclization reaction producing π-conjugated segments, which fluoresce blue. During this conversion, the particles shrink in diameter but as an ensemble they retain their monodispersity. This work investigates the optimal reaction conditions and characterizes the optical properties.
DWI-Leibniz Institute for Interactive Materials, RWTH Aachen University, Forckenbeckstraße 50, 52076, Aachen, Germany.
Dennis
D
Go
DWI-Leibniz Institute for Interactive Materials, RWTH Aachen University, Forckenbeckstraße 50, 52076, Aachen, Germany.
Alena
A
Jurásková
DWI-Leibniz Institute for Interactive Materials, RWTH Aachen University, Forckenbeckstraße 50, 52076, Aachen, Germany.
Andreas
A
Hoffmann
DWI-Leibniz Institute for Interactive Materials, RWTH Aachen University, Forckenbeckstraße 50, 52076, Aachen, Germany.
Gent
G
Kapiti
DWI-Leibniz Institute for Interactive Materials, RWTH Aachen University, Forckenbeckstraße 50, 52076, Aachen, Germany.
Alexander J C
AJ
Kuehne
D000180:Acrylic Resins / Q000138:chemical synthesis / Q000737:chemistry*; D003116:Color; D005453:Fluorescence; D006358:Hot Temperature; D008872:Microwaves; D015394:Molecular Structure; D010316:Particle Size; D013499:Surface Properties
D000180:Acrylic Resins; C010504:polyacrylonitrile
colloids; cyclization; fluorescence; polyacrylonitrile; stabilization