Scanning codes with the capability for stimuli-triggered decryption are urgently needed to prevent information leakage and counterfeiting. Compared to conventional 1D barcodes and 2D QR codes, 3D codes show promise in this field thanks to the presence of four different colors in the icon, with great information variability. Up to now, encrypted 3D code development has primarily focused on chemical reaction-based systems, leading to information decryption in an irreversible transformation manner. Herein, a novel and intelligent 3D code encryption system has been constructed with full reversibility and a fast response, taking advantage of the luminescent vapochromism of cyanostilbene-based supramolecular assemblies. Information in the inkjet-printed 3D code is specifically decrypted through vapor fuming with chlorinated solvents, while it is reversibly encrypted upon removing the vapor. Hence, this study provides a novel and effective strategy for obtaining high-performance smart scanning codes.

中文翻译：

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基于氰基二苯乙烯的vapo-fluorchromic超分子组件用于可逆3D代码加密。

迫切需要具有触发触发解密功能的扫描代码，以防止信息泄漏和伪造。与传统的1D条码和2D QR码相比，由于3D码在图标中存在四种不同的颜色，因而具有很大的信息可变性，因此在该领域显示出了希望。到目前为止，加密的3D代码开发主要集中在基于化学反应的系统上，从而导致以不可逆的转换方式进行信息解密。在此，利用基于氰基茂金属的超分子组装体的发光气相致变色，构造了具有完全可逆性和快速响应的新颖且智能的3D代码加密系统。喷墨打印的3D代码中的信息是通过使用氯化溶剂进行蒸汽发烟而专门解密的，而在去除蒸气后可逆加密。因此，本研究为获得高性能智能扫描码提供了一种新颖有效的策略。