Exploration of the relationship between molecular structure and properties of materials, particularly the multi-stimuli-responsive types, remain a challenge. Herein, we designed, synthesized and tested the photo-physical properties of a multi-stimuli-responsive TPE derivative (TPE-(C3Br)4). The TPE-(C3Br)4 exhibits piezochromic emitting deep-blue to green-blue light under external grinding. Interestingly, both non-ground and ground TPE-(C3Br)4 exhibits vapochromic and thermochromic properties. When exposed to CH₂Cl₂ vapor for 3 min and thereafter heated at 90 °C for 5 min or heat at 140 °C for 3 min and exposed to CH₂Cl₂ vapor for 2 s, TPE-(C3Br)4 reversibly glows between deep-blue and green-blue. The ground sample glows between green-blue and deep-blue under only one stimulus for a few min (e.g. heating or fuming alone). The multi-stimuli-responsive properties of TPE-(C3Br)4 are attributed to variation in intermolecular stacking and intramolecular twisting. The TPE-(C3Br)4 was used to develop a new encryption-decryption method. These findings demonstrate the utility of smart responsive TPE-(C3Br)4 material in developing data protection systems.

探索分子结构与材料特性之间的关系，特别是多刺激响应类型，仍然是一个挑战。在此，我们设计、合成并测试了多刺激响应 TPE 衍生物 (TPE-(C3Br)4) 的光物理特性。TPE-(C3Br)4 在外部研磨下表现出压致变色发射深蓝色至绿蓝色光。有趣的是，未研磨和研磨的 TPE-(C3Br)4 均表现出汽色和热致变色特性。当暴露于 CH ₂ Cl ₂蒸气 3 分钟，然后在 90 °C 下加热 5 分钟或在 140 °C 下加热 3 分钟并暴露于 CH ₂ Cl _{2 时}蒸气 2 秒，TPE-(C3Br)4 在深蓝色和绿蓝色之间可逆地发光。地面样品仅在一种刺激下（例如，单独加热或发烟）在绿蓝色和深蓝色之间发光。TPE-(C3Br)4 的多刺激响应特性归因于分子间堆积和分子内扭曲的变化。TPE-(C3Br)4 被用来开发一种新的加解密方法。这些发现证明了智能响应 TPE-(C3Br)4 材料在开发数据保护系统中的实用性。