Color tuning of photonic gel films by UV irradiation
- Authors
- Shin, S.E.; Kim, S.Y.; Shin, D.M.
- Issue Date
- 2010
- Publisher
- SPIE-INT SOC OPTICAL ENGINEERING
- Keywords
- Photonic crystal; Photonic gel; UV irradiation
- Citation
- Proceedings of SPIE - The International Society for Optical Engineering, v.7599
- Journal Title
- Proceedings of SPIE - The International Society for Optical Engineering
- Volume
- 7599
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/21604
- DOI
- 10.1117/12.841649
- ISSN
- 0277-786X
- Abstract
- Block copolymers have drawn increasing attention for fabricating functional nanomaterials due to their properties of self-assembly. In particular, photonic crystals hold promise for multiple optical applications. We prepared 1D photonic crystals with polystyrene-b-poly(2-vinyl pyridine) (PS-b-P2VP) lamellar films which is hydrophobic block-hydrophilic polyelectrolyte block polymer of 57 kg /mol-b-57 kg/mol. The lamellar stacks, which are alternating layers of hydrophilic and hydrophobic moiety of PS-b-P2VP, are obtained by exposing the spin coated film under chloroform vapor. The band gaps of the lamellar films interestingly varied after immersion into the quaternizing solvents containing 5wt% of iodomethane solubilized in n-hexane. We demonstrate about the influence of UV light on those photonic gel films. To study of different properties of films, UV-visible absorption spectra were measured as a different UV irradiation time at swollen films with distilled water. The UV-visible maximum absorption spectra shifted by UV irradiation time. Dependent on the time of UV irradiations, we can change the photonic band gap. © 2010 Copyright SPIE - The International Society for Optical Engineering.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > Chemical Engineering Major > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/21604)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.