Photonic porous silicon as a pH sensor.
- Authors
- Type
- Published Article
- Journal
- Nanoscale Research Letters
- Publisher
- Springer (Biomed Central Ltd.)
- Publication Date
- Jan 01, 2014
- Volume
- 9
- Issue
- 1
- Pages
- 420–420
- Identifiers
- DOI: 10.1186/1556-276X-9-420
- PMID: 25177227
- Source
- Medline
- Keywords
- License
- Unknown
Abstract
Chronic wounds do not heal within 3 months, and during the lengthy healing process, the wound is invariably exposed to bacteria, which can colonize the wound bed and form biofilms. This alters the wound metabolism and brings about a change of pH. In this work, porous silicon photonic films were coated with the pH-responsive polymer poly(2-diethylaminoethyl acrylate). We demonstrated that the pH-responsive polymer deposited on the surface of the photonic film acts as a barrier to prevent water from penetrating inside the porous matrix at neutral pH. Moreover, the device demonstrated optical pH sensing capability visible by the unaided eye.