Programmable Dynamic Information Storage Composite Film with Highly Sensitive Thermochromism and Gradually Adjustable Fluorescence.

The development of an integrated material system capable of effectively organizing and combining multisource information, such as dynamic pigmentary, structural and fluorescent colors, is significant and challenging. Achieving such programmable dynamic information storage could considerably enhance the diversity and security of information deliveries. Here, we present a polymer-stabilized cholesteric liquid crystal (PSCLC) system with highly temperature-sensitive structural color and light-sensitive pigmentary and fluorescence colors. The prepared CLCs can reversibly change its structural color from red to blue within variational 3°C near room temperature, and exhibit a gradually adjustable fluorescence which can transform from blue to pink and finally to bright red. All this dynamic information is programmable and tailored, hundreds of thousands of (>540,000) pattern combinations can easily achieve by optical writing with a "bagua" pattern photomask. Therefore, if the corresponding code combinations to the pattern are assigned particular meanings, encrypted transmission of information with very high security can be achieved by utilizing applicable information encoding tables and decryption rules. This article is protected by copyright. All rights reserved.