RT Journal Article
T1 Concentration Effect over Thermoresponse Derived from Organometallic Compounds of Functionalized Poly(N-isopropylacrylamide-co-dopamine Methacrylamide)
A1 Moral Zamorano, María
A1 Quijada Garrido, Isabel
A1 San Miguel Arnanz, Verónica
A1 Serrano Prieto, María Bernarda
A1 Baselga Llidó, Juan
A1 Hashmi, Saud
A1 Stadler, Florian J.
A1 García Peñas, Alberto
AB 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 N-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.
PB MDPI
SN 2073-4360
YR 2021
FD 2021-11-12
LK https://hdl.handle.net/10016/35249
UL https://hdl.handle.net/10016/35249
LA eng
NO The authors want to thank the funding obtained from Ministerio de Ciencia, Innovación yUniversidades (MCIU), Agencia Estatal de Investigación (AEI) and Fondo Europeo de DesarrolloRegional (FEDER, UE) through the project: PGC2018-095364-B-I00.
DS e-Archivo
RD 27 jul. 2024