journal article·2019-10-02

Preparation of an Interpenetrating Network of a Poly(ampholyte) and a Cholesteric Polymer and Investigation of Its Hydrochromic Properties

Zixuan Deng, Guofu Zhou, Laurens T. de Haan

ACS Applied Materials & Interfaces· Volume 11· Issue 39
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Abstract

A new water-responsive photonic coating based on a hygroscopic amphoteric poly(ampholyte) has been developed. The material consists of an interpenetrating network between the poly(ampholyte) and a cholesteric liquid crystalline polymer that reflects light. Swelling of this hybrid material upon contact with water causes a red-shift of the reflection band. As both cation and anion are incorporated in the ionic network, this coating possesses a high stability of its water responsiveness after prolonged and/or repeated exposure to water, even if the water contains dissolved ions. In addition, optimization of the water response of the coatings is demonstrated by changing the composition of the base cholesteric mixture, and color patterns were prepared through selective UV exposure.
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Research context

OpenAlex topics: Analytical Chemistry and Sensors · Photonic Crystals and Applications · Photochromic and Fluorescence Chemistry

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

SCNU-TUE Joint Laboratory of Device Integrated Responsive Materials (DIRM), National Center for International Research on Green Optoelectronics, and Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, Guangdong, China

Shenzhen Guohua Optoelectronics Tech. Co. Ltd., Shenzhen 518110, P. R. China

Academy of Shenzhen Guohua Optoelectronics, Shenzhen 518110, P. R. China

Funding

State Administration of Foreign Experts Affairs · Ministry of Education of the People's Republic of China · National Natural Science Foundation of China · Yunnan expert workstation · Guangdong Province · Guangdong Provincial Key Laboratory of Optical Information Materials and Technology · MOE International Laboratory for Optical Information Technologies · Shenzhen Science and Technology Plan · Guangdong Innovative Research Team Program · Longhua District

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