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Stable suspensions with concentrations of the particles ranging from 10\u00a0\u00b5g\/mL (surfactant\u2010free, by solvent mixing) to 5.88\u00a0mg\/mL (precipitation, containing surfactant) were generated with zeta\u2010potentials from \u22125 to \u221250\u00a0mV. Characterization of the nanoparticles by SEC, DSC, and XRD showed no significant changes in molecular weight, thermal behavior, or crystallinity via the solvent\u2010based methods, compared to the pristine polymer, highlighting their suitability for producing standardized nanoparticle dispersions. Fluorescence spectroscopy of the Alexa\u2010dye\u2010labeled particles confirmed the successful incorporation of the Alexa dyes, so improving monitoring of their biological profiles of the PEF\u2010MP\/NPs. s\u2010SNOM (near field imaging) could identify individual PEF\u2010particles sized \u223c200\u00a0nm by direct imaging.<\/jats:p>","DOI":"10.1002\/marc.202500839","type":"journal-article","created":{"date-parts":[[2025,12,24]],"date-time":"2025-12-24T19:42:01Z","timestamp":1766605321000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Generating Tagged Micro\u2010 and Nanoparticles of Poly(ethylene furanoate) and Poly(ethylene terephthalate) as Reference Materials"],"prefix":"10.1002","volume":"47","author":[{"ORCID":"https:\/\/orcid.org\/0009-0000-8713-210X","authenticated-orcid":false,"given":"Redoy Gazi","family":"Shuvo","sequence":"first","affiliation":[{"name":"Macromolecular Chemistry Division of Technical and Macromolecular Chemistry Faculty of Natural Sciences II (Chemistry, Physics, Mathematics) Institute of Chemistry Martin\u2010Luther University Halle\u2010Wittenberg  Halle Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9883-6134","authenticated-orcid":false,"given":"Andreas F.","family":"Th\u00fcnemann","sequence":"additional","affiliation":[{"name":"Federal Institute for Materials Research and Testing (BAM)  Berlin Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4485-1037","authenticated-orcid":false,"given":"Zviadi","family":"Katcharava","sequence":"additional","affiliation":[{"name":"Macromolecular Chemistry Division of Technical and Macromolecular Chemistry Faculty of Natural Sciences II (Chemistry, Physics, Mathematics) Institute of Chemistry Martin\u2010Luther University Halle\u2010Wittenberg  Halle Germany"},{"name":"Institute of Chemistry, Martin Luther University Halle Wittenberg; 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