Investigations on the interaction of water-soluble semiconductor polymer with thioglycolic acid (TGA) capped CdTe quantum dots

Página do item simplificado
dc.creatorMilton Lopes de Lana Junior
dc.creatorThamiris Ranquine Cardoso
dc.creatorPaula Duarte de Carvalho Souza
dc.creatorVirgilio de Carvalho dos Anjos
dc.creatorMaria José Valenzuela Bell
dc.creatorLuiz Alberto Cury
dc.creatorAndreza Germana da Silva Subtil
dc.creatorMariana da Costa Novo Pimenta Brandão
dc.date.accessioned2025-02-24T18:20:58Z
dc.date.accessioned2025-09-09T00:34:08Z
dc.date.available2025-02-24T18:20:58Z
dc.date.issued2019
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.identifier.doihttps://doi.org/10.1016/j.optmat.2019.05.001
dc.identifier.issn1873-1252
dc.identifier.urihttps://hdl.handle.net/1843/80361
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofOptical Materials
dc.rightsAcesso Restrito
dc.subjectTransferência de energia
dc.subjectPontos quânticos
dc.subjectNanocompósitos
dc.subjectFluorescência
dc.subject.otherEnergy transfer
dc.subject.otherQuantum dots
dc.subject.otherNanocomposites
dc.subject.otherWater-soluble polymer
dc.subject.otherFluorescence
dc.titleInvestigations on the interaction of water-soluble semiconductor polymer with thioglycolic acid (TGA) capped CdTe quantum dots
dc.typeArtigo de periódico
local.citation.epage75
local.citation.spage70
local.citation.volume93
local.description.resumoStudies of nanocomposites produced by the association of quantum dots (QDs) and polymers, in general, use the nanocrystals as the energy's donor and the polymer's molecules as acceptors. The production of nanocomposites in which a water-soluble polymer is the energy donor species and the quantum dots the acceptors species is particularly difficult due to low luminescence quantum yield and low fluorescence lifetimes of these molecules when compared to the QDs. In this work, we associated colloidal CdTe QDs stabilized with thioglycolic acid (TGA) with water-soluble semiconductor luminescent polymer Poly{[2,5-bis(2-(N,N-diethylamino)ethoxy)-1,4- phenylene]-alt-1,4-phenylene} (PPE-DBE) to produce nanocomposites that favors the polymers as donors and QDs as acceptors. We characterized the composites by absorption, static fluorescence, and dynamic fluorescence. Our results showed the intensification of the QDs emission and its quantum yield on the nanocomposite and the decrease of the polymer lifetime. Thus, we verified the occurrence of energy transfer from the polymer to the quantum dots, especially for samples which the ratio of PPP-DBE monomers per number of QDs in solution is approximately 465, achieving an increase of 11.34% on the QDs' fluorescence quantum yield.
local.identifier.orcidhttps://orcid.org/0009-0006-7943-8524
local.identifier.orcidhttps://orcid.org/0000-0001-8338-6081
local.identifier.orcidhttps://orcid.org/0000-0003-3190-9295
local.identifier.orcidhttps://orcid.org/0000-0003-2279-0384
local.identifier.orcidhttps://orcid.org/0000-0001-7038-4570
local.identifier.orcidhttps://orcid.org/0000-0002-0763-4431
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S092534671930299X?via%3Dihub

Arquivos

Licença do pacote

Agora exibindo 1 - 1 de 1
Imagem de Miniatura
Nome:
License.txt
Tamanho:
1.99 KB
Formato:
Plain Text
Descrição:
Baixar

Coleções

Artigo de Periódico

Logo UFMG