Aggregation-induced emission luminogens (AIEgens) exhibit excellent luminescence properties in the aggregated state. For chiral AIEgens, a combination of right- and left-handed objects can be packed more tightly than homochiral objects due to Wallach’s rule. However, the manner in which Wallach’s rule can affect the luminescence properties of chiral AIEgens remains unclear. We report that, in contrast to their homochiral counterparts, racemic AIEgens obtained using binaphthyl-2,2′-diamine salicylaldehyde Schiff-bases ( BINAPAS) exhibit racemism-enhanced emission. It was found that the intramolecular motion of racemic BINAPAS is more restricted than that of chiral BINAPAS due to its denser packing mode, which significantly enhances the emission intensity of racemic BINAPAS. Based on this finding, a novel single-molecule cryptographic information storage system was constructed. This work offers a new perspective for understanding the influence of Wallach’s rule on the aggregation-induced emission properties of organic molecules, and more importantly, extends Wallach’s rule to the fundamental difference in chiral-photophysics.

聚集诱导发射发光体（AIEgens）在聚集状态下表现出优异的发光特性。对于手性 AIEgens，由于 Wallach 规则，右手和左手对象的组合可以比纯手性对象更紧密地包装。然而，Wallach 规则影响手性 AIEgen 发光特性的方式仍不清楚。我们报告说，与它们的纯手性对应物相比，使用联萘-2,2'-二胺水杨醛席夫碱获得的外消旋 AIEgens ( 比纳帕斯) 表现出外消旋增强的排放。发现外消旋体的分子内运动 比纳帕斯比手性更受限制 比纳帕斯由于其更密集的堆积方式，显着增强了外消旋体的发射强度 比纳帕斯. 基于这一发现，构建了一种新型的单分子密码信息存储系统。这项工作为理解 Wallach 规则对有机分子聚集诱导发射特性的影响提供了新的视角，更重要的是，将 Wallach 规则扩展到了手性光物理学的根本差异。