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The production of CPNs using combinations of two different conjugated polymers can be used to create nanocomposites, by mixing previously formed CPNs from distinct polymers, and to create blend CPNs, by mixing distinct polymers prior to the formation of the CPNs. These two methods can produce diverse nanoparticle solutions with distinct properties due to the interaction between the chosen conjugated polymers. In this work, we fabricated water-dispersible luminescent CPNs from the combination of two distinct conjugated polymers: Poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene], MEH-PPV, and poly(9,9-di-n-dodecylfluorene-2,7-diyl), PFD. The CPNs prepared separately and subsequently mixed exhibit the combined optical properties of the individual CPNs. More importantly, our results show that in CPNs fabricated with both polymers mixed prior to the formation, PFD can transfer energy by Fo\u0308rster resonance energy transfer (FRET) to MEH-PPV. The FRET efficiency is highly dependent on the concentration and ratio of the polymers, reaching values of efficiency above 90% for distances of the order of 4 nm. This energy transfer in blend nanoparticle samples (CPN\/PFD:MEH-PPV) resulted in an overall enhancement of the photoluminescence quantum yield of the hybrid nanoparticles, reaching values up to two times higher than those measured for pure CPN\/MEH-PPV nanoparticles. These findings show that the donor\u2013acceptor ratio controls energy-transfer efficiency by regulating the fraction of interacting donor\u2013acceptor pairs in hybrid conjugated polymer nanoparticles, enabling applications in luminescent nanostructures, sensing, and photonic devices.<\/jats:p>","DOI":"10.1021\/acsomega.6c07561","type":"journal-article","created":{"date-parts":[[2026,9,12]],"date-time":"2026-09-12T16:01:51Z","timestamp":1789228911000},"page":"57998-58010","source":"Crossref","is-referenced-by-count":0,"title":["Composite and Blends\nof PFD and MEH-PPV Conjugated\nPolymer Nanoparticles: Combined Optical Properties and Quantum Yield\nIncrease by FRET"],"prefix":"10.1021","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0009-0002-1785-5286","authenticated-orcid":true,"given":"Caio Henrique","family":"Viana da Silva","sequence":"first","affiliation":[{"name":"Universidade Federal de Vic\u0327osa , , Av. P.H. Rolfs, s\/n Campus Universita\u0301rio , ,","place":["Vic\u0327osa, Minas Gerais, Brazil, 36570-000"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0006-7943-8524","authenticated-orcid":true,"given":"Milton Lopes","family":"de Lana Junior","sequence":"additional","affiliation":[{"name":"Universidade Federal de Vic\u0327osa , , Av. P.H. Rolfs, s\/n Campus Universita\u0301rio , ,","place":["Vic\u0327osa, Minas Gerais, Brazil, 36570-000"]},{"name":"Instituto de Cie\u0302ncias Exatas , , Av. Anto\u0302nio Carlos, 6627 , , ,","place":["Belo Horizonte, Minas Gerais, Brazil, CEP 31270-901"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thiago","family":"Cazati","sequence":"additional","affiliation":[{"name":"Universidade Federal de Ouro Preto , , Campus Universita\u0301rio Morro Do Cruzeiro , , ,","place":["Ouro Preto, Minas Gerais, Brazil, CEP 35400-000"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mariana P.","family":"Brandao","sequence":"additional","affiliation":[{"name":"Universidade Federal de Vic\u0327osa , , Av. P.H. Rolfs, s\/n Campus Universita\u0301rio , ,","place":["Vic\u0327osa, Minas Gerais, Brazil, 36570-000"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andreza Germana","family":"da Silva Subtil","sequence":"additional","affiliation":[{"name":"Universidade Federal de Vic\u0327osa , , Av. P.H. Rolfs, s\/n Campus Universita\u0301rio , ,","place":["Vic\u0327osa, Minas Gerais, Brazil, 36570-000"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2026,9,12]]},"reference":[{"issue":"10","key":"2026092911083981000_cit1","doi-asserted-by":"publisher","first-page":"6260","DOI":"10.1021\/cr100132y","article-title":"Nanoparticles of Conjugated Polymers","volume":"110","author":"Pecher","year":"2010","journal-title":"Chem. Rev."},{"issue":"11","key":"2026092911083981000_cit2","doi-asserted-by":"publisher","first-page":"3086","DOI":"10.1002\/anie.201205133","article-title":"Highly Fluorescent\nSemiconducting Polymer Dots for\nBiology and Medicine","volume":"52","author":"Wu","year":"2013","journal-title":"Angew. Chem. Int. Ed."},{"key":"2026092911083981000_cit3","doi-asserted-by":"publisher","first-page":"45","DOI":"10.1016\/j.physb.2016.05.033","article-title":"Complementary Study Based on DFT\nto Describe the Structure and Properties Relationship of Diblock Copolymer\nBased on PVK and PPV","volume":"497","author":"Mbarek","year":"2016","journal-title":"Physica B Condens. Matter."},{"key":"2026092911083981000_cit4","doi-asserted-by":"publisher","first-page":"125","DOI":"10.1016\/j.molstruc.2016.05.023","article-title":"The Effect\nof Cross-Linking Yield\nof PVK on the Vibrational and Emissive Properties of New Copolymer\nBased on Vinylcarbazole and Phenylene-Vinylene Units","volume":"1120","author":"Mbarek","year":"2016","journal-title":"J. Mol. Struct."},{"key":"2026092911083981000_cit5","doi-asserted-by":"publisher","first-page":"630","DOI":"10.1016\/j.saa.2018.07.061","article-title":"New Polymer-Matrix\nNanocomposites\nBased on SWCNTs and PVK-PPV Copolymer: Synthesis, Functionalization\nand Characterization","volume":"205","author":"Mbarek","year":"2018","journal-title":"Spectrochim. Acta, Part\nA"},{"issue":"29","key":"2026092911083981000_cit6","doi-asserted-by":"publisher","first-page":"14148","DOI":"10.1021\/jp0618126","article-title":"Energy Transfer Mediated\nFluorescence from Blended Conjugated Polymer Nanoparticles","volume":"110","author":"Wu","year":"2006","journal-title":"J. Phys. Chem. B"},{"issue":"51","key":"2026092911083981000_cit7","doi-asserted-by":"publisher","first-page":"25568","DOI":"10.1021\/jp065990a","article-title":"Size-Dependent\nSpectroscopic Properties of Conjugated Polymer Nanoparticles","volume":"110","author":"Grey","year":"2006","journal-title":"J. Phys. Chem. 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Fluoresc."},{"issue":"3","key":"2026092911083981000_cit10","doi-asserted-by":"publisher","first-page":"408","DOI":"10.3390\/bios13030408","article-title":"Fluorescent Nanocomposite Hydrogels Based on Conjugated\nPolymer Nanoparticles as Platforms for Alkaline Phosphatase Detection","volume":"13","author":"Alacid","year":"2023","journal-title":"Biosensors"},{"key":"2026092911083981000_cit11","doi-asserted-by":"publisher","first-page":"126375","DOI":"10.1016\/j.polymer.2023.126375","article-title":"Controlled Formation\nof the \u03b2-Phase in Poly(9,9-Dioctylfluorene) by Blending with\nLow-Molecular-Weight Polystyrene","volume":"285","author":"Sato","year":"2023","journal-title":"Polymer"},{"issue":"1","key":"2026092911083981000_cit12","doi-asserted-by":"publisher","first-page":"49","DOI":"10.1016\/S0379-6779(00)00221-6","article-title":"Electroluminescence\nProperties of\nPoly[2-(2\u2032-Ethylhexyloxy)-5-Methoxy-1,4-Phenylenevinylene]\/Tris(8-Hydroxyquinoline)Aluminum\nTwo-Layer Devices","volume":"114","author":"Kim","year":"2000","journal-title":"Synth. 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Mater."},{"issue":"1","key":"2026092911083981000_cit19","doi-asserted-by":"publisher","first-page":"19","DOI":"10.1039\/C8NA00108A","article-title":"\u03c0-Conjugated\nNanostructured Materials: Preparation, Properties and Photonic Applications","volume":"1","author":"Tuncel","year":"2019","journal-title":"Nanoscale Adv."},{"issue":"8","key":"2026092911083981000_cit20","doi-asserted-by":"publisher","first-page":"2033","DOI":"10.1016\/j.polymer.2008.02.046","article-title":"An Effect\nof Side Chain Length on the Solution Structure\nof Poly(9,9-Dialkylfluorene)s in Toluene","volume":"49","author":"Knaapila","year":"2008","journal-title":"Polymer"},{"key":"2026092911083981000_cit21","volume-title":"A Common Mistake In Lifetime\nBased FRET Measurement","author":"Becker","year":"2023"},{"issue":"5","key":"2026092911083981000_cit22","doi-asserted-by":"publisher","first-page":"475","DOI":"10.1111\/j.1751-1097.1998.tb09082.x","article-title":"The Correct\nUse of \u201cAverage\u201d Fluorescence\nParameters","volume":"67","author":"Sillen","year":"1998","journal-title":"Photochem. Photobiol."},{"issue":"10","key":"2026092911083981000_cit23","doi-asserted-by":"publisher","first-page":"757","DOI":"10.1002\/1521-4095(20020517)14:10&lt;757::AID-ADMA757&gt;3.0.CO;2-Y","article-title":"Measurements of\nSolid-State Photoluminescence Quantum\nYields of Films Using a Fluorimeter","volume":"14","author":"P\u00e5lsson","year":"2002","journal-title":"Adv. Mater."},{"issue":"3","key":"2026092911083981000_cit24","doi-asserted-by":"publisher","first-page":"230","DOI":"10.1002\/adma.19970090308","article-title":"An Improved Experimental\nDetermination of External Photoluminescence Quantum Efficiency","volume":"9","author":"de Mello","year":"1997","journal-title":"Adv. Mater."},{"issue":"19","key":"2026092911083981000_cit25","doi-asserted-by":"publisher","first-page":"1995","DOI":"10.1002\/polb.24106","article-title":"Spectroscopic\nProperties of Poly(9,9-Dioctylfluorene) Thin Films Possessing Varied\nFractions of \u03b2-Phase Chain Segments: Enhanced Photoluminescence\nEfficiency via Conformation Structuring","volume":"54","author":"Perevedentsev","year":"2016","journal-title":"J Polym\nSci B Polym Phys."},{"issue":"10","key":"2026092911083981000_cit26","doi-asserted-by":"publisher","first-page":"107402","DOI":"10.1103\/PhysRevLett.94.107402","article-title":"Chain Conformations\nand Photoluminescence of Poly(Di-n-Octylfluorene)","volume":"94","author":"Chunwaschirasiri","year":"2005","journal-title":"Phys. Rev. Lett."},{"issue":"8","key":"2026092911083981000_cit27","doi-asserted-by":"publisher","first-page":"765","DOI":"10.1002\/adfm.200305149","article-title":"Understanding the\nOrigin of the 535\nNm Emission Band in Oxidized Poly(9,9-dioctylfluorene): The Essential\nRole of Inter-Chain\/Inter-Segment Interactions","volume":"14","author":"Sims","year":"2004","journal-title":"Adv. Funct. Mater."},{"issue":"43","key":"2026092911083981000_cit28","doi-asserted-by":"publisher","first-page":"18851","DOI":"10.1021\/jp904308h","article-title":"Aggregation Effects on the Emission\nSpectra and Dynamics of Model Oligomers of MEH-PPV","volume":"113","author":"Sherwood","year":"2009","journal-title":"J. Phys. Chem. C"},{"issue":"43","key":"2026092911083981000_cit29","doi-asserted-by":"publisher","first-page":"12389","DOI":"10.1021\/jp073492b","article-title":"Intrachain Photoluminescence\nDynamics of MEH\u2013PPV\nin the Solid State","volume":"111","author":"Kanemoto","year":"2007","journal-title":"J. Phys. Chem. B"},{"issue":"1","key":"2026092911083981000_cit30","doi-asserted-by":"publisher","first-page":"793679","DOI":"10.1155\/2012\/793679","article-title":"Investigation on the\nOptical and Surface Morphology of Conjugated\nPolymer MEH-PPV: ZnO Nanocomposite Thin Films","volume":"2012","author":"Yahya","year":"2012","journal-title":"J. Nanomater."},{"issue":"38","key":"2026092911083981000_cit31","doi-asserted-by":"publisher","first-page":"21062","DOI":"10.1021\/acs.jpcc.7b08336","article-title":"Exciton Dynamics and Formation Mechanism\nof MEH-PPV Polymer-Based Nanostructures","volume":"121","author":"Ghosh","year":"2017","journal-title":"J.\nPhys. Chem. C"},{"issue":"47","key":"2026092911083981000_cit32","doi-asserted-by":"publisher","first-page":"15497","DOI":"10.1021\/jacs.6b10761","article-title":"Anisotropic Conjugated\nPolymer Chain Conformation Tailors the Energy Migration in Nanofibers","volume":"138","author":"Camposeo","year":"2016","journal-title":"J. Am. Chem. Soc."},{"key":"2026092911083981000_cit33","doi-asserted-by":"publisher","first-page":"109011","DOI":"10.1016\/j.dyepig.2020.109011","article-title":"Dual Fo\u0308rster\nResonance Energy Transfer in Ternary PFO\/MEH-PPV\/F7GA Hybrid Thin\nFilms for White Organic Light-Emitting Diodes","volume":"186","author":"Al-Asbahi","year":"2021","journal-title":"Dyes Pigm."},{"key":"2026092911083981000_cit34","doi-asserted-by":"publisher","DOI":"10.1007\/978-0-387-46312-4","volume-title":"Principles of Fluorescence\nSpectroscopy","author":"Lakowicz","year":"2006","edition":"3rd"},{"key":"2026092911083981000_cit35","unstructured":"Becker, W.\n          \n          Bh TCSPC Handbook, 11th ed.,www.becker-hickl.com, 2026; Vol. 1."}],"container-title":["ACS Omega"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/pubs.acs.org\/doi\/pdf\/10.1021\/acsomega.6c07561","content-type":"application\/pdf","content-version":"vor","intended-application":"unspecified"},{"URL":"https:\/\/pubs.acs.org\/acsodf\/article-pdf\/11\/38\/57998\/68492055\/acsomega.6c07561.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/pubs.acs.org\/acsodf\/article-pdf\/11\/38\/57998\/68492055\/acsomega.6c07561.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T15:31:47Z","timestamp":1790695907000},"score":1,"resource":{"primary":{"URL":"https:\/\/pubs.acs.org\/acsodf\/article\/11\/38\/57998\/5428906\/Composite-and-Blends-of-PFD-and-MEH-PPV-Conjugated"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,9,12]]},"references-count":35,"journal-issue":{"issue":"38","published-online":{"date-parts":[[2026,9,12]]},"published-print":{"date-parts":[[2026,9,29]]}},"URL":"https:\/\/doi.org\/10.1021\/acsomega.6c07561","relation":{},"ISSN":["2470-1343"],"issn-type":[{"value":"2470-1343","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,9,12]]}}}