Synthesis of self-assembled tubes in direct conjugated porphyrin-gold nanohybrid solution

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dc.creatorDwivedi, Yashashchandra
dc.creatorDe Boni, Leonardo
dc.creatorGonçalves, Pablo José
dc.creatorZilio, Sérgio Carlos
dc.date.accessioned2024-07-08T13:38:06Z
dc.date.available2024-07-08T13:38:06Z
dc.date.issued2013
dc.description.abstractWe report on the formation of self-assembled meso-tetrakis (p-sulfonatofenyl) porphyrin (H2 TPPS4– 4) tubes stabilized by gold nanoparticles (NPs) in basic solution and on their spectroscopic chareterization. The role of the gold NPs in the aggregation dynamics of free-base sulfonated porphyrin (H2TPPS4– 4) is also investigated. The direct conjugation of the gold NPs to the H2TPPS4 molecule quenches the fluorescence intensity, while absorption peaks are blue-shifted, indicating predominant H-type aggregation. It is observed that porphyrin molecules adsorbed on the surface of the gold NP interact and form tubes of maximum diameter ∼1.5 μm and length >100 μm. Steady-state and time-resolved spectroscopic techniques confirm nonradiative energy transfer from porphyrin to gold NP.
dc.identifier.citationDWIVEDI, Yashashchandra; DE BONI, Leonardo; GONÇALVES, Pablo José; ZILIO, Sérgio Carlos. Synthesis of self-assembled tubes in direct conjugated porphyrin-gold nanohybrid solution. Science of Advanced Materials, Los Angeles, v. 5, p. 295-300, 2013. DOI: 10.1166/sam.2013.1458. Disponível em: https://www.ingentaconnect.com/content/asp/sam/2013/00000005/00000003/art00012. Acesso em: 4 jul. 2024.
dc.identifier.doi10.1166/sam.2013.1458
dc.identifier.issn1947-2935
dc.identifier.issne- 1947-2943
dc.identifier.urihttps://www.ingentaconnect.com/content/asp/sam/2013/00000005/00000003/art00012
dc.language.isoeng
dc.publisher.countryEstados unidos
dc.publisher.departmentInstituto de Física - IF (RMG)
dc.rightsAcesso Restrito
dc.subjectGold nanoparticle
dc.subjectLuminescence quenching
dc.subjectNanotube
dc.subjectOptical properties
dc.subjectPorphyrin
dc.subjectSelf-assembly
dc.titleSynthesis of self-assembled tubes in direct conjugated porphyrin-gold nanohybrid solution
dc.typeArtigo

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