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Introduction of sp\n                    <jats:sup>3<\/jats:sup>\n                    quantum defects (QDs) creates novel NIR emission features, which promise huge potential for (bio)photonics. However, so far defect chemistry based on diazonium salts is mainly limited to benzene derivatives. The reaction side products also quench SWCNT fluorescence and impair additional surface chemistry. Here, we introduce a photochemical strategy based on arylazo sulfonates to a) create more complex aromatic QDs and b) avoid side products that adsorb and quench. We show that this way coumarin and other QDs are incorporated, which increases overall NIR emission by more than 90% without purification. These materials can be non\u2010covalently modified with biocompatible polymers (polyethyleneglycoles, DNA) without a change in photophysical properties and we demonstrate mechanical (viscosity) and chemical (neurotransmitter dopamine) sensing. This one\u2010pot approach creates QDs in SWCNTs and provides access to advanced hybrid materials for photonic applications.\n                  <\/jats:p>","DOI":"10.1002\/anie.202521215","type":"journal-article","created":{"date-parts":[[2025,12,24]],"date-time":"2025-12-24T06:27:56Z","timestamp":1766557676000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["One\u2010Pot Incorporation of Quantum Defects into Single\u2010Walled Carbon Nanotubes with Arylazo Sulfonates"],"prefix":"10.1002","volume":"65","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3055-2936","authenticated-orcid":false,"given":"Valeriia D.","family":"Andreeva","sequence":"first","affiliation":[{"name":"Department of Chemistry and Biochemistry Ruhr University Bochum  44801 Bochum Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9233-2739","authenticated-orcid":false,"given":"Justus 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