Journal
JOURNAL OF MATERIALS CHEMISTRY
Volume 19, Issue 33, Pages 5952-5955Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b905760a
Keywords
-
Funding
- Ministry of Science and Technology of China [2007CB936401]
- National Natural Scientific Foundation of China (NNSFC) Projects [20574065, 20725414, 50333050]
- Hong Kong Special Administration Region (HKSAR) Earmarked Project [CUHK4037/08P, 2160361]
Ask authors/readers for more resources
Electrically tunable full color display photonic crystals (PCs) made of a thin film of block copolymer, polystyrene-b-poly(2-vinyl pyridine) (PS-b-P2VP), have been developed. The phase separation of PS and P2VP blocks leads to a one-dimensional periodic lamellar structure parallel to the surface of the thin film. In a solvent mixture of water and ethanol, each P2VP layer is swollen and partially charged. Applying a low voltage (<2.5 V) to such a thin film can lead to the repeatable expansion or contraction of each P2VP layer, depending on the direction and strength of the electrical potential. Such a variation of the lamellar periodicity leads to a full color display over a wide range from ultraviolet to near infrared. The advantages of such PCs are their facile preparation, low driving voltage and good durability, which make them potentially useful in information technologies.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available