Quantifying (n,m) species in single-wall carbon nanotubes dispersions by combining Raman and optical absorption spectroscopies

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dc.creatorRafael Nunes Gontijo
dc.creatorGustavo de Almeida Magalhães Sáfar
dc.creatorAriete Righi
dc.creatorRishabh M. Jain
dc.creatorMichael Steven Strano
dc.creatorCristiano Fantini Leite
dc.date.accessioned2023-06-27T19:13:51Z
dc.date.accessioned2025-09-09T01:28:13Z
dc.date.available2023-06-27T19:13:51Z
dc.date.issued2017
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.sponsorshipFINEP - Financiadora de Estudos e Projetos, Financiadora de Estudos e Projetos
dc.description.sponsorshipINCT – Instituto nacional de ciência e tecnologia (Antigo Instituto do Milênio)
dc.identifier.doihttps://doi.org/10.1016/j.carbon.2017.01.041
dc.identifier.issn1873-3891
dc.identifier.urihttps://hdl.handle.net/1843/55433
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofCarbon
dc.rightsAcesso Restrito
dc.subjectEspectroscopia de Raman
dc.subjectNanotubos de carbono
dc.subjectQuiralidade
dc.subject.otherRaman spectroscopy
dc.subject.otherCarbon nanotubes
dc.subject.otherChirality
dc.titleQuantifying (n,m) species in single-wall carbon nanotubes dispersions by combining Raman and optical absorption spectroscopies
dc.typeArtigo de periódico
local.citation.epage687
local.citation.spage681
local.citation.volume115
local.description.resumoOptical absorption in combination with resonant Raman spectroscopies were used for the determination of (n,m) distribution and the absolute concentration of single-wall carbon nanotubes (SWCNT) species in few chiralities enriched dispersions. Relative (n,m) content was obtained from Raman excitation profiles of the radial breathing modes corrected by the respective Raman cross sections. Absolute concentrations were obtained from the analysis of the optical absorption spectra. The combination of Raman and optical absorption results allowed us to quantify the concentration of each individual species present in the samples and to calculate the oscillator strength for five semiconducting single-wall nanotube species. The oscillator strength is related to the diameter and chiral angle, and their values for E11 and E22 optical transitions present opposite behavior if 2n+m mod 3 = 1 or 2. The proposed protocol can be used as a reliable metrological method for measuring the concentration of SWCNT species in a sample.
local.identifier.orcidhttps://orcid.org/0000-0002-6335-483X
local.identifier.orcidhttps://orcid.org/0000-0003-1354-3138
local.identifier.orcidhttps://orcid.org/0000-0001-8752-9609
local.identifier.orcidhttps://orcid.org/0000-0003-0436-7857
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S0008622317300519

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