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The rigid dibenzyl linker of G1 induces a unique zigzag conformation, enabling G1 to form an antiparallel charge transfer complex with CB[8], giving a binding constant as high as 5.49 \u00d7 10\n                    <jats:sup>6<\/jats:sup>\n                    <jats:sc>m<\/jats:sc>\n                    <jats:sup>\u22121<\/jats:sup>\n                    and triggering a nanofiber\u2010to\u2010nanorod topological transformation that boosts energy transfer efficiency. Significantly, multi\u2010level confinement by CB[8] and HACD aligns G1 into donor\u2013acceptor arrays, realizing single\u2010molecule PRET from bromophenyl pyridinium (phosphor donor) to anthracenyl pyridinium (acceptor). This unprecedented process expands 500\u00a0nm phosphorescence to 650\u00a0nm NIR delayed fluorescence with a lifetime recorded as 11.20 \u00b5s, overcoming traditional PRET's short\u2010wavelength limitation. Crucially, the system achieves successful NIR channel labeling\/detection in living cells, demonstrating its bioimaging potential. This work advances supramolecular PRET design via rational structural tailoring and confinement engineering, holding broad significance for cell imaging, information encryption, and anti\u2010counterfeiting.\n                  <\/jats:p>","DOI":"10.1002\/advs.202522017","type":"journal-article","created":{"date-parts":[[2026,2,19]],"date-time":"2026-02-19T08:57:26Z","timestamp":1771491446000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Multi\u2010Level Confinement Single\u2010Molecule Charge Transfer Activated PRET for Near\u2010Infrared Targeted Cell Imaging"],"prefix":"10.1002","volume":"13","author":[{"given":"Zhuo","family":"Lei","sequence":"first","affiliation":[{"name":"College of Chemistry State Key Laboratory of Elemento\u2010Organic Chemistry Nankai University  Tianjin P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sai","family":"Li","sequence":"additional","affiliation":[{"name":"College of Chemistry State Key Laboratory of Elemento\u2010Organic Chemistry Nankai University  Tianjin P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pei\u2010Ao","family":"Sun","sequence":"additional","affiliation":[{"name":"College of Chemistry State Key Laboratory of Elemento\u2010Organic Chemistry Nankai University  Tianjin P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yong","family":"Chen","sequence":"additional","affiliation":[{"name":"College of Chemistry State Key Laboratory of Elemento\u2010Organic Chemistry Nankai University  Tianjin P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xuejian","family":"Zhang","sequence":"additional","affiliation":[{"name":"College of Chemistry State Key Laboratory of Elemento\u2010Organic Chemistry Nankai University  Tianjin P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8723-1896","authenticated-orcid":false,"given":"Yu","family":"Liu","sequence":"additional","affiliation":[{"name":"College of Chemistry State Key Laboratory of Elemento\u2010Organic Chemistry Nankai University  Tianjin P. R. 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