Synthesis and properties of polysiloxane-based electrooptic materials

Abstract

In this study, new functionalized polysiloxane material was synthesized. The polysiloxane‐based electrooptic material with side‐chain charge‐transporting functionalities and nonlinear optical chromophores was investigated through a three‐step synthetic route. Elementary analysis and NMR spectra indicate that the polymer has a high degree of substitution. Detailed physical properties showed that the polymer has a glass transition of around 91°C, and its photoconductivity and electrooptic coefficient increase with the increasing applied electric field. Photorefractivity of the system has been demonstrated through the asymmetric energy transfer in a two‐beam coupling experiment. © 1999 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 37: 3854–3860, 1999

A Printed and Microfabricated Sensor Device for the Sensitive Low Volume Measurement of Aqueous Ammonia

“…Water vapour is a long‐established interferent in many sensors, including previous polyaniline resistometric and impedimetric types and has often been a barrier to successful sensor development and implementation . However, it is also well‐established that water molecules interact with polyaniline in a different manner to ammonia.…”