NEW FLUORESCENT CROSSLINKED AROMATIC POLYAMIDES CONTAINING THIOPHENEAND FURANE IN THEIR BACKBONE

New fluorescent crosslinked aromatic polyamides containing phenylen, thiophene and furane groups in the main chain were synthesized by self-condensation from 3-(5-aminothiophen-2-yl)propenoic acid, 3-(5-aminofuran-2-yl)propenoic acid and 3-(4-((5-aminothiophen-2-yl)methyleneamino)phenyl)propenoic ac...

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Autores principales:	SÁNCHEZ,C. O, SOBARZO,P, GATICA,N, MAC-LEOD-CAREY,D
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2015
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072015000300014
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spelling	oai:scielo:S0717-970720150003000142015-12-04NEW FLUORESCENT CROSSLINKED AROMATIC POLYAMIDES CONTAINING THIOPHENEAND FURANE IN THEIR BACKBONESÁNCHEZ,C. OSOBARZO,PGATICA,NMAC-LEOD-CAREY,DNew fluorescent crosslinked aromatic polyamides containing phenylen, thiophene and furane groups in the main chain were synthesized by self-condensation from 3-(5-aminothiophen-2-yl)propenoic acid, 3-(5-aminofuran-2-yl)propenoic acid and 3-(4-((5-aminothiophen-2-yl)methyleneamino)phenyl)propenoic acid using the phosphorylation method and triphenylphosphite as initiator. The amino compounds were obtained from 3-(5-nitrothiophen-2-yl)propenoic acid, 3-(5-nitrofuran-2-yl)propenoic acid and 3-(4-((5-nitrothiophen-2-yl)methyleneamino)phenyl)propenoic by selective reduction of each nitro group and was confirmed by ¹H-NMR and FT-IR spectroscopy. Crosslinking of polyamides ocurr by mechanism between vinyl side groups reacts with the vinyl carbon of another chain, giving rise to interchain linear crosslinking. Depending on the structure the polymers have higher degree of crosslinking. Some vinyl groups react by thermal treatmentat 200 °C. Partially crosslinked polyamides with high emission fluorescence were obtained. Consequently amide bond formation, crosslinking and conjugation are the main factors that influence the fluorescence process. While polymers have several factors that affect the fluorescence, we believe that the most significant is the crosslinking of vinyl bonds. Subsequent thermal treatment of polyamides provoked crosslinking increase and fluorescence loss. The effect of the chemical structure was correlated with the thermal decomposition. Polyamides were characterized by UV-visible, FT-IR and ¹H-NMR spectroscopy, inherent viscosity and thermogravimetric analysis (TGA). The synthesized polyamides exhibited potential for heat sensitive devices application since the fluorescence can be activated or quenched according to a heating process.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.60 n.3 20152015-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072015000300014en10.4067/S0717-97072015000300014
institution	Scielo Chile
collection	Scielo Chile
language	English
description	New fluorescent crosslinked aromatic polyamides containing phenylen, thiophene and furane groups in the main chain were synthesized by self-condensation from 3-(5-aminothiophen-2-yl)propenoic acid, 3-(5-aminofuran-2-yl)propenoic acid and 3-(4-((5-aminothiophen-2-yl)methyleneamino)phenyl)propenoic acid using the phosphorylation method and triphenylphosphite as initiator. The amino compounds were obtained from 3-(5-nitrothiophen-2-yl)propenoic acid, 3-(5-nitrofuran-2-yl)propenoic acid and 3-(4-((5-nitrothiophen-2-yl)methyleneamino)phenyl)propenoic by selective reduction of each nitro group and was confirmed by ¹H-NMR and FT-IR spectroscopy. Crosslinking of polyamides ocurr by mechanism between vinyl side groups reacts with the vinyl carbon of another chain, giving rise to interchain linear crosslinking. Depending on the structure the polymers have higher degree of crosslinking. Some vinyl groups react by thermal treatmentat 200 °C. Partially crosslinked polyamides with high emission fluorescence were obtained. Consequently amide bond formation, crosslinking and conjugation are the main factors that influence the fluorescence process. While polymers have several factors that affect the fluorescence, we believe that the most significant is the crosslinking of vinyl bonds. Subsequent thermal treatment of polyamides provoked crosslinking increase and fluorescence loss. The effect of the chemical structure was correlated with the thermal decomposition. Polyamides were characterized by UV-visible, FT-IR and ¹H-NMR spectroscopy, inherent viscosity and thermogravimetric analysis (TGA). The synthesized polyamides exhibited potential for heat sensitive devices application since the fluorescence can be activated or quenched according to a heating process.
author	SÁNCHEZ,C. O SOBARZO,P GATICA,N MAC-LEOD-CAREY,D
spellingShingle	SÁNCHEZ,C. O SOBARZO,P GATICA,N MAC-LEOD-CAREY,D NEW FLUORESCENT CROSSLINKED AROMATIC POLYAMIDES CONTAINING THIOPHENEAND FURANE IN THEIR BACKBONE
author_facet	SÁNCHEZ,C. O SOBARZO,P GATICA,N MAC-LEOD-CAREY,D
author_sort	SÁNCHEZ,C. O
title	NEW FLUORESCENT CROSSLINKED AROMATIC POLYAMIDES CONTAINING THIOPHENEAND FURANE IN THEIR BACKBONE
title_short	NEW FLUORESCENT CROSSLINKED AROMATIC POLYAMIDES CONTAINING THIOPHENEAND FURANE IN THEIR BACKBONE
title_full	NEW FLUORESCENT CROSSLINKED AROMATIC POLYAMIDES CONTAINING THIOPHENEAND FURANE IN THEIR BACKBONE
title_fullStr	NEW FLUORESCENT CROSSLINKED AROMATIC POLYAMIDES CONTAINING THIOPHENEAND FURANE IN THEIR BACKBONE
title_full_unstemmed	NEW FLUORESCENT CROSSLINKED AROMATIC POLYAMIDES CONTAINING THIOPHENEAND FURANE IN THEIR BACKBONE
title_sort	new fluorescent crosslinked aromatic polyamides containing thiopheneand furane in their backbone
publisher	Sociedad Chilena de Química
publishDate	2015
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072015000300014
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NEW FLUORESCENT CROSSLINKED AROMATIC POLYAMIDES CONTAINING THIOPHENEAND FURANE IN THEIR BACKBONE

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