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Photonic porous silicon as a pH sensor.

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.

SUBMITTER: Pace S

PROVIDER: S-EPMC4147967 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature

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Photonic porous silicon as a pH sensor.

Pace Stephanie S Vasani Roshan B RB Zhao Wei W Perrier Sébastien S Voelcker Nicolas H NH

Nanoscale research letters 20140821 1

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 fr ...[more]

PMID: 25177227

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