A Novel Ionic Polymer Metal ZnO Composite (IPMZC)

• Main Authors: Sang-Mun Kim, Kwang J. Kim, Rashi Tiwari
• Format: Article
• Language: English
• Published: MDPI AG 2011-04-01
• Series: Sensors
• Subjects: ionic polymer; sensor; photo-luminescence; quenching
• Online Access: http://www.mdpi.com/1424-8220/11/5/4674/

The presented research introduces a new Ionic Polymer-Metal-ZnO Composite (IPMZC) demonstrating photoluminescence (PL)-quenching on mechanical bending or application of an electric field. The newly fabricated IPMZC integrates the optical properties of ZnO and the electroactive nature of Ionic Polymer Metal Composites (IPMC) to enable a non-contact read-out of IPMC response. The electro-mechano-optical response of the IPMZC was measured by observing the PL spectra under mechanical bending and electrical regimes. The working range was measured to be 375–475 nm. It was noted that the PL-quenching increased proportionally with the increase in curvature and applied field at 384 and 468 nm. The maximum quenching of 53.4% was achieved with the membrane curvature of 78.74/m and 3.01% when electric field (12.5 × 103 V/m) is applied. Coating IPMC with crystalline ZnO was observed to improve IPMC transduction.