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In this work, we synthesized a three \u03b4\u2010carboline\u2010capped highly efficient propeller\u2010like organic radical TTM\u20103\u03b4PyID with a D\u2212A structure. The radical showed pure red emission with PLQY of 77.3\u2009% in cyclohexane and kept 35.2\u2009% even in the polar solvent dichloromethane, indicating potential applications in fluorescence sensing. Radical TTM\u20103\u03b4PyID also showed stepwise proton\u2010responsive properties and different emissions at the different states. Furthermore, by taking advantage of the nitrogen site of the radical, we have achieved a fluorescent\u2010quenched radical derivative TTM\u20103\u03b4PyID\u2010AB by introducing of 2\u2010bromoethyl chain through a quaternary ammonium salt reaction. The radical TTM\u20103\u03b4PyID\u2010AB showed turn\u2010on fluorescence in the presence of primary organic amines. Finally, this turn\u2010on fluorescent property is successfully used to distinguish aliphatic amines from aromatic amines.<\/jats:p>","DOI":"10.1002\/asia.202401229","type":"journal-article","created":{"date-parts":[[2024,12,5]],"date-time":"2024-12-05T10:49:58Z","timestamp":1733395798000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["A Highly Efficient Propeller\u2010Like Organic Radical with Less Solvent Sensitivity and Selective Detection of Aromatic Amines from Aliphatic Amines through Turn\u2010on Fluorescence"],"prefix":"10.1002","volume":"20","author":[{"given":"Zhaoze","family":"Ding","sequence":"first","affiliation":[{"name":"College of Chemistry and Chemical Engineering Xinjiang Agricultural University  East Road No. 311 Urumqi 830052 P. R. 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