The Optical Characteristics of 1D Lamellar Photonic Crystal with PS-b-P2VP Block Copolymer
The lamellar-forming 1-dimensional photonic films were prepared by three different molecular weight, but nearly symmetric poly(styrene-b-2-vinyl pyridine) (PS-b-P2VP) block copolymers. Propylene glycol monomethyl ether acetate (PGMEA) was used as solvent to spin-cast the
films. The films were submerged into ethanol to swell P2VP block. As the molecular weight of the block copolymer increases, the film shows red-shifted color, because of longer periodic distance. In addition, the color of the films in ethanol was tuned by blending the PS-b-P2VP block
copolymers.
Keywords: 1D Lamellar Structure; Block Copolymer; Photonic Crystal; Various Colors
Document Type: Research Article
Affiliations: 1: Department of Chemical Engineering, Hongik University, Seoul 121-791, Korea 2: Princeton High School, 151 Moore St, Princeton, NJ 08540, United States
Publication date: 01 August 2016
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