Spectroscopic studies of different poly3hexylthiophene chain environments in a polyfluorene matrix

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dc.creatorPaloma Lays dos Santos
dc.creatorLuiz Alberto Cury
dc.creatorFernando Manuel Baião Dias
dc.creatorAndrew Paul Monkman
dc.date.accessioned2025-02-23T17:45:58Z
dc.date.accessioned2025-09-09T00:25:32Z
dc.date.available2025-02-23T17:45:58Z
dc.date.issued2016
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.description.sponsorshipINCT – Instituto nacional de ciência e tecnologia (Antigo Instituto do Milênio)
dc.identifier.doihttps://doi.org/10.1016/j.jlumin.2015.11.045
dc.identifier.issn1872-7883
dc.identifier.urihttps://hdl.handle.net/1843/80339
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofJournal of Luminescence
dc.rightsAcesso Restrito
dc.subjectEspectroscopia de fluorescência
dc.subjectPolímeros conjugados
dc.subjectTransferência de energia
dc.subject.otherConjugated polymers
dc.subject.otherAggregate states
dc.subject.otherExciton energy transfer
dc.subject.otherPolyfluorenes
dc.subject.otherPolythiophenes
dc.subject.otherForster energy transfer
dc.subject.otherAggregation of P3HT blocks
dc.titleSpectroscopic studies of different poly3hexylthiophene chain environments in a polyfluorene matrix
dc.typeArtigo de periódico
local.citation.epage123
local.citation.spage118
local.citation.volume172
local.description.resumoOptical properties of blends made of poly(9,9-dioctyl-fluorene-2,7-diyl) (PFO) and poly(3-hexylthiophene-2,5-diyl) (P3HT) were investigated and compared to those of poly(9,9-dioctylfluorene-alt-bithiophene) (F8T2) by steady state optical spectroscopy. In addition to the individual emissions of PFO and P3HT chromophores, the blends composed by these two polymers show a new peak emission around 590 nm. The new peak is attributed to well dissolved, “isolated”, P3HT chains dispersed into the PFO matrix. It was observed that the well dissolved P3HT chains are activated by Förster energy transfer, where PFO and P3HT molecules act as a donor and an acceptor, respectively. Further, emission from ordered aggregates of P3HT is clearly observed and the interplay between aggregate and isolate P3HT chains was studied. In contrast to the PFO:P3HT blends, the emission spectra from F8T2 co-polymer show clear interaction in the ground state between the dioctylfluorene and bithiophene monomer-units, giving rise to a wholly new chromophore conformation on the backbone.
local.identifier.orcidhttps://orcid.org/0000-0002-6975-9600
local.identifier.orcidhttps://orcid.org/0000-0002-0763-4431
local.identifier.orcidhttps://orcid.org/0000-0002-0784-8640
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S0022231315304440?via%3Dihub

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