Synthesis and Characterization of a New Semiconductor Oligomer Having Quinoline and Fluorene Units

Synthesis and Characterization of a New Semiconductor Oligomer Having Quinoline and Fluorene Units

A new oligomer having fluorenylene and quinolinylene groups was straightforwardly synthesized by Suzuki reaction and proven to be readily soluble in common organic solvents. The chemical structure of the copolymer was confirmed and characterized by 1H nuclear magnetic resonance (NMR), Fourier transform infrared (FTIR), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and gel permeation chromatography (GPC) measurements. In solution, the oligomer presented two absorption maxima at 314 and 245 nm, along with a high fluorescence quantum yield (82%), characterized by an emission maximum at 419 nm. The band gap of the material was estimated to be around 2.60 eV by cyclic voltammetry, however the optical band gap for the thin film observed by UV-Vis spectroscopy was 3.10 eV. The divergence was attributed to charge transfer interactions due to the presence of donor and acceptor units in the copolymer.

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Main Authors: Correia,Fábio C., Santos,Thays C. F., Garcia,Jarem R., Peres,Laura O., Wang,Shu H.
Format: Digital revista
Language:English
Published: Sociedade Brasileira de Química 2015
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532015000100084
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spelling oai:scielo:S0103-505320150001000842015-02-03Synthesis and Characterization of a New Semiconductor Oligomer Having Quinoline and Fluorene UnitsCorreia,Fábio C.Santos,Thays C. F.Garcia,Jarem R.Peres,Laura O.Wang,Shu H. conjugated material fluorene quinoline Suzuki OLEDs A new oligomer having fluorenylene and quinolinylene groups was straightforwardly synthesized by Suzuki reaction and proven to be readily soluble in common organic solvents. The chemical structure of the copolymer was confirmed and characterized by 1H nuclear magnetic resonance (NMR), Fourier transform infrared (FTIR), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and gel permeation chromatography (GPC) measurements. In solution, the oligomer presented two absorption maxima at 314 and 245 nm, along with a high fluorescence quantum yield (82%), characterized by an emission maximum at 419 nm. The band gap of the material was estimated to be around 2.60 eV by cyclic voltammetry, however the optical band gap for the thin film observed by UV-Vis spectroscopy was 3.10 eV. The divergence was attributed to charge transfer interactions due to the presence of donor and acceptor units in the copolymer.info:eu-repo/semantics/openAccessSociedade Brasileira de QuímicaJournal of the Brazilian Chemical Society v.26 n.1 20152015-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532015000100084en10.5935/0103-5053.20140217
institution SCIELO
collection OJS
country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-scielo-br
tag revista
region America del Sur
libraryname SciELO
language English
format Digital
author Correia,Fábio C.
Santos,Thays C. F.
Garcia,Jarem R.
Peres,Laura O.
Wang,Shu H.
spellingShingle Correia,Fábio C.
Santos,Thays C. F.
Garcia,Jarem R.
Peres,Laura O.
Wang,Shu H.
Synthesis and Characterization of a New Semiconductor Oligomer Having Quinoline and Fluorene Units
author_facet Correia,Fábio C.
Santos,Thays C. F.
Garcia,Jarem R.
Peres,Laura O.
Wang,Shu H.
author_sort Correia,Fábio C.
title Synthesis and Characterization of a New Semiconductor Oligomer Having Quinoline and Fluorene Units
title_short Synthesis and Characterization of a New Semiconductor Oligomer Having Quinoline and Fluorene Units
title_full Synthesis and Characterization of a New Semiconductor Oligomer Having Quinoline and Fluorene Units
title_fullStr Synthesis and Characterization of a New Semiconductor Oligomer Having Quinoline and Fluorene Units
title_full_unstemmed Synthesis and Characterization of a New Semiconductor Oligomer Having Quinoline and Fluorene Units
title_sort synthesis and characterization of a new semiconductor oligomer having quinoline and fluorene units
description A new oligomer having fluorenylene and quinolinylene groups was straightforwardly synthesized by Suzuki reaction and proven to be readily soluble in common organic solvents. The chemical structure of the copolymer was confirmed and characterized by 1H nuclear magnetic resonance (NMR), Fourier transform infrared (FTIR), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and gel permeation chromatography (GPC) measurements. In solution, the oligomer presented two absorption maxima at 314 and 245 nm, along with a high fluorescence quantum yield (82%), characterized by an emission maximum at 419 nm. The band gap of the material was estimated to be around 2.60 eV by cyclic voltammetry, however the optical band gap for the thin film observed by UV-Vis spectroscopy was 3.10 eV. The divergence was attributed to charge transfer interactions due to the presence of donor and acceptor units in the copolymer.
publisher Sociedade Brasileira de Química
publishDate 2015
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532015000100084
work_keys_str_mv AT correiafabioc synthesisandcharacterizationofanewsemiconductoroligomerhavingquinolineandfluoreneunits
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