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Herein, we report imine\u2010bond directed formation of a rigid organic cage (<jats:bold>TPE\u2010cage<\/jats:bold>) that was synthesized by [2+4] imine condensation of a TPE\u2010cored tetra\u2010aldehyde (<jats:bold>TPE\u2010TA<\/jats:bold>) with a clip\u2010like diamine (<jats:bold>XA<\/jats:bold>) to illustrate confinement\u2010induced fluorescence enhancement. Compared to the non\u2010emissive <jats:bold>TPE\u2010TA<\/jats:bold> (<jats:italic>\u03d5<\/jats:italic><jats:sub>F<\/jats:sub>=0.26\u2009%) in the dichloromethane (DCM) solution, the <jats:bold>TPE\u2010cage<\/jats:bold> achieved a remarkable (~520\u2010fold) emission enhancement (<jats:italic>\u03d5<\/jats:italic><jats:sub>F<\/jats:sub>=70.38\u2009%). In contrast, a monomeric tetra\u2010imine model compound (<jats:bold>TPE\u2010model<\/jats:bold>) showed only a minor enhancement (<jats:italic>\u03d5<\/jats:italic><jats:sub>F<\/jats:sub>=0.56\u2009%) in emission compared to the parent tetra\u2010aldehyde <jats:bold>TPE\u2010TA<\/jats:bold>. The emission of <jats:bold>TPE\u2010cage<\/jats:bold> was further enhanced by ~1.5\u2010fold (<jats:italic>\u03d5<\/jats:italic><jats:sub>F<\/jats:sub>=80.96\u2009%) in the aggregated state owing to aggregation\u2010induced emission enhancement (AIEE). This approach establishes the potential for synthesizing luminescent materials with high emission in both solution and solid\u2010state by employing a single\u2010step imine condensation reaction.<\/jats:p>","DOI":"10.1002\/chem.202303101","type":"journal-article","created":{"date-parts":[[2023,12,20]],"date-time":"2023-12-20T07:14:45Z","timestamp":1703056485000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":14,"title":["Enhancing Fluorescence in Both Solution and Solid States Induced by Imine Cage Formation"],"prefix":"10.1002","volume":"30","author":[{"given":"Pallab","family":"Bhandari","sequence":"first","affiliation":[{"name":"Department of Inorganic and Physical Chemistry Indian Institute of Science  Bangalore 560012 India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shakil","family":"Ahmed","sequence":"additional","affiliation":[{"name":"Department of Inorganic and Physical Chemistry Indian 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