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The ligands were synthesized by condensing chiral cyclohexanediamine with either 1\u2010hydroxy\u20102\u2010naphthaldehyde or 2\u2010hydroxy\u20101\u2010naphthaldehyde, followed by complexation with boron difluoride (BF<jats:sub>2<\/jats:sub>) to yield CNB1 and CNB2, respectively. While the parent Schiff bases exhibited no CPL, BF<jats:sub>2<\/jats:sub> coordination induced strong CPL signals in solution. Remarkably, upon aggregation in a mixed solvent system, CNB2 displayed enhanced and inverted CPL, whereas its isomer CNB1 showed attenuated emission. Through comprehensive characterization and singlecrystal analysis, we attribute this divergent behavior to distinct molecular packing modes: CNB2 forms tightly stacked aggregates with efficient \u03c0\u2500\u03c0 interactions, while CNB1 adopts a less ordered arrangement. This study establishes a clear correlation between subtle structural modifications, supramolecular packing, and CPL performance, offering a rational strategy for tailoring chiroptical properties through precise molecular design and controlled self\u2010assembly.<\/jats:p>","DOI":"10.1002\/asia.202500506","type":"journal-article","created":{"date-parts":[[2025,5,20]],"date-time":"2025-05-20T09:05:37Z","timestamp":1747731937000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Nanoaggregation\u2010Enhanced and Inverted Circularly Polarized Luminescence in Isomeric Schiff Base Bis(boron difluoride) Complexes"],"prefix":"10.1002","volume":"20","author":[{"given":"Sipeng","family":"Wang","sequence":"first","affiliation":[{"name":"Henan Institute of Advanced Technology Zhengzhou University  Zhengzhou 450003 P. R. 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