Concentration Effect over Thermoresponse Derived from Organometallic Compounds of Functionalized Poly(<i>N</i>-isopropylacrylamide-<i>co</i>-dopamine Methacrylamide)

The functionalization of smart polymers is opening a new perspective in catalysis, drug carriers and biosensors, due to the fact that they can modulate the response regarding conventional devices. This smart response could be affected by the presence of organometallic complexes in terms of interacti...

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Autores principales:	María Moral-Zamorano, Isabel Quijada-Garrido, Verónica San-Miguel, Berna Serrano, Juan Baselga, Saud Hashmi, Florian J. Stadler, Alberto García-Peñas
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	thermoresponsive polymers hydrophobic transitions lower critical solution temperature functionalized materials contact angle Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/f4c906ced4e74004ad9004408950caf2
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spelling	oai:doaj.org-article:f4c906ced4e74004ad9004408950caf22021-11-25T18:48:21ZConcentration Effect over Thermoresponse Derived from Organometallic Compounds of Functionalized Poly(<i>N</i>-isopropylacrylamide-<i>co</i>-dopamine Methacrylamide)10.3390/polym132239212073-4360https://doaj.org/article/f4c906ced4e74004ad9004408950caf22021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4360/13/22/3921https://doaj.org/toc/2073-4360The functionalization of smart polymers is opening a new perspective in catalysis, drug carriers and biosensors, due to the fact that they can modulate the response regarding conventional devices. This smart response could be affected by the presence of organometallic complexes in terms of interactions which could affect the physical chemical properties. In this sense, the thermoresponsive behavior of copolymers based on <i>N</i>-isopropylacrylamide (NIPAM) could be affected due to the presence of hydrophobic groups and concentration effect. In this work, the functionalization of a copolymer based on NIPAM and dopamine methacrylamide with different amounts of bis(cyclopentadienyl)titanium (IV) dichloride was carried out. The resulting materials were characterized, showing a clear idea about the mechanism of functionalization through FTIR spectroscopy. The thermoresponsive behavior was also studied for various polymeric solutions in water by UV–vis spectroscopy and calorimetry. The hydrophobic interactions promoted by the organometallic complex could affect the transition associated with the lower critical solution temperature (LCST), specifically, the segments composed by pure NIPAM. That fact would explain the reduction of the width of the LCST-transition, contrary to what could be expected. In addition, the hydrophobicity was tested by the contact angle and also DNA interactions.María Moral-ZamoranoIsabel Quijada-GarridoVerónica San-MiguelBerna SerranoJuan BaselgaSaud HashmiFlorian J. StadlerAlberto García-PeñasMDPI AGarticlethermoresponsive polymershydrophobic transitionslower critical solution temperaturefunctionalized materialscontact angleOrganic chemistryQD241-441ENPolymers, Vol 13, Iss 3921, p 3921 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	thermoresponsive polymers hydrophobic transitions lower critical solution temperature functionalized materials contact angle Organic chemistry QD241-441
spellingShingle	thermoresponsive polymers hydrophobic transitions lower critical solution temperature functionalized materials contact angle Organic chemistry QD241-441 María Moral-Zamorano Isabel Quijada-Garrido Verónica San-Miguel Berna Serrano Juan Baselga Saud Hashmi Florian J. Stadler Alberto García-Peñas Concentration Effect over Thermoresponse Derived from Organometallic Compounds of Functionalized Poly(<i>N</i>-isopropylacrylamide-<i>co</i>-dopamine Methacrylamide)
description	The functionalization of smart polymers is opening a new perspective in catalysis, drug carriers and biosensors, due to the fact that they can modulate the response regarding conventional devices. This smart response could be affected by the presence of organometallic complexes in terms of interactions which could affect the physical chemical properties. In this sense, the thermoresponsive behavior of copolymers based on <i>N</i>-isopropylacrylamide (NIPAM) could be affected due to the presence of hydrophobic groups and concentration effect. In this work, the functionalization of a copolymer based on NIPAM and dopamine methacrylamide with different amounts of bis(cyclopentadienyl)titanium (IV) dichloride was carried out. The resulting materials were characterized, showing a clear idea about the mechanism of functionalization through FTIR spectroscopy. The thermoresponsive behavior was also studied for various polymeric solutions in water by UV–vis spectroscopy and calorimetry. The hydrophobic interactions promoted by the organometallic complex could affect the transition associated with the lower critical solution temperature (LCST), specifically, the segments composed by pure NIPAM. That fact would explain the reduction of the width of the LCST-transition, contrary to what could be expected. In addition, the hydrophobicity was tested by the contact angle and also DNA interactions.
format	article
author	María Moral-Zamorano Isabel Quijada-Garrido Verónica San-Miguel Berna Serrano Juan Baselga Saud Hashmi Florian J. Stadler Alberto García-Peñas
author_facet	María Moral-Zamorano Isabel Quijada-Garrido Verónica San-Miguel Berna Serrano Juan Baselga Saud Hashmi Florian J. Stadler Alberto García-Peñas
author_sort	María Moral-Zamorano
title	Concentration Effect over Thermoresponse Derived from Organometallic Compounds of Functionalized Poly(<i>N</i>-isopropylacrylamide-<i>co</i>-dopamine Methacrylamide)
title_short	Concentration Effect over Thermoresponse Derived from Organometallic Compounds of Functionalized Poly(<i>N</i>-isopropylacrylamide-<i>co</i>-dopamine Methacrylamide)
title_full	Concentration Effect over Thermoresponse Derived from Organometallic Compounds of Functionalized Poly(<i>N</i>-isopropylacrylamide-<i>co</i>-dopamine Methacrylamide)
title_fullStr	Concentration Effect over Thermoresponse Derived from Organometallic Compounds of Functionalized Poly(<i>N</i>-isopropylacrylamide-<i>co</i>-dopamine Methacrylamide)
title_full_unstemmed	Concentration Effect over Thermoresponse Derived from Organometallic Compounds of Functionalized Poly(<i>N</i>-isopropylacrylamide-<i>co</i>-dopamine Methacrylamide)
title_sort	concentration effect over thermoresponse derived from organometallic compounds of functionalized poly(<i>n</i>-isopropylacrylamide-<i>co</i>-dopamine methacrylamide)
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/f4c906ced4e74004ad9004408950caf2
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Concentration Effect over Thermoresponse Derived from Organometallic Compounds of Functionalized Poly(<i>N</i>-isopropylacrylamide-<i>co</i>-dopamine Methacrylamide)

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