The chromatic shift of 1-D photonic crystal films influenced by the alkyl group on imidazolium moiety of ionic liquids
- Authors
- Lim, Jin Youb; Ju, Jeh Beck; Shin, Dong Myung
- Issue Date
- 2017
- Publisher
- TAYLOR & FRANCIS LTD
- Keywords
- 1-dimenional photonic; block copolymers; color crystals; ionic liquids; hydrophobicity; reflecting color
- Citation
- MOLECULAR CRYSTALS AND LIQUID CRYSTALS, v.650, no.1, pp.110 - 116
- Journal Title
- MOLECULAR CRYSTALS AND LIQUID CRYSTALS
- Volume
- 650
- Number
- 1
- Start Page
- 110
- End Page
- 116
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/6966
- DOI
- 10.1080/15421406.2017.1328227
- ISSN
- 1542-1406
- Abstract
- Retaining reflection color developed from the photonic crystals has been our main interest. Persistent reflecting color from polymer photonic crystals using non-volatile solvents has been huddled by permeation of large molecular weight solvents. Some ionic liquids can permeate in between polymer photonic crystal layers. Polystyrene-b-poly-2-vinylpyridine (PS-b-P2VP) was used to obtain photonic crystals. The molecular weight of PS-b-P2VP and the hydrophobicity of the ionic liquids were altered to attain persistent color. Imidazolium and 1-ethyl-3-methylimidazolium were used as cations of ionic liquids where the anion was bis(trifluoromethanesulfonyl) imide. The photonic crystals made with block copolymers of 84k-69k and 57k-57k molecular weights showed the persistent distinct colors by swelling with the ionic liquids.
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Collections - College of Engineering > Chemical Engineering Major > 1. Journal Articles
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