Polyelectrolyte diode: Nonlinear current response of a junction between aqueous ionic gels
- Authors
- Cayre, Olivier J.; Chang, Suk Tai; Velev, Orlin D.
- Issue Date
- Sep-2007
- Publisher
- AMER CHEMICAL SOC
- Citation
- JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v.129, no.35, pp 10801 - 10806
- Pages
- 6
- Journal Title
- JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
- Volume
- 129
- Number
- 35
- Start Page
- 10801
- End Page
- 10806
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/28018
- DOI
- 10.1021/ja072449z
- ISSN
- 0002-7863
1520-5126
- Abstract
- We demonstrate that a fixed junction between two aqueous gels containing oppositely charged polyelectrolytes could rectify electric current. The agarose-based gels were "doped" with sodium poly(styrene sulfonic acid) and poly(diallyl dimethylammonium chloride). The unidirectional current response of the interface between the cationic and anionic gels originates directly from anisotropy in the mobile ionic charges in the gels. The current depends on the concentration of polyelectrolyte, the background ionic concentration, and the distance traveled by the ions. The I-V curves from the devices demonstrated a combination of transient and stationary rectification effects. The current densities achieved were comparable to or higher than those obtained with previously reported organic semiconductor diodes. The diodes had good long-term stability in both DC and AC conduction modes. The materials and the process of preparation of these devices are simple, inexpensive, and scalable. They could be used in flexible and biocompatible electronic circuits.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > School of Chemical Engineering and Material Science > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/28018)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.