title: Quadruple-responsive nanocomposite based on dextran-PMAA-PNIPAM, iron oxide nanoparticles, and gold nanorods.
abstract: A quadruple-responsive nanocomposite that responds to temperature, pH, magnetic field, and NIR is obtained by incorporating superparamagnetic iron oxide nanoparticles (SPIONs) and gold nanorods (AuNRs) into a dextran-based smart copolymer network. The dual-sensitive copolymer is prepared by sequential RAFT polymerization of methacrylic acid and N-isopropylacrylamide from trithiocarbonate groups linked to dextran in one pot. These functionalized nanocomposites with superior stability can respond to the four stimuli mentioned above well. As evidenced by UV-vis and TEM measurements, the temperature-induced unusual blue-shift in the longitudinal plasmon band is possibly due to the side-to-side assembly of AuNRs.
authors.affiliation: School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P R China.
authors.forename: Wenqian
authors.initials: W
authors.lastname: Feng
authors.affiliation: School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China.
authors.forename: Weipeng
authors.initials: W
authors.lastname: Lv
authors.affiliation: School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China.
authors.forename: Junjie
authors.initials: J
authors.lastname: Qi
authors.affiliation: School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China.
authors.forename: Guoliang
authors.initials: G
authors.lastname: Zhang
authors.affiliation: School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China.
authors.forename: Fengbao
authors.initials: F
authors.lastname: Zhang
authors.affiliation: School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China. xiaobinfan@tju.edu.cn.
authors.forename: Xiaobin
authors.initials: X
authors.lastname: Fan
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry*; D003911:Dextrans / Q000737:chemistry*; D005290:Ferric Compounds / Q000737:chemistry*; D006046:Gold / Q000737:chemistry*; D053761:Nanocomposites / Q000737:chemistry*; D043942:Nanotubes / Q000737:chemistry*; D011109:Polymethacrylic Acids / Q000737:chemistry*
chemical_list: D000180:Acrylic Resins; D003911:Dextrans; D005290:Ferric Compounds; D011109:Polymethacrylic Acids; C000499:ferric oxide; C030613:polymethacrylic acid; C052970:poly-N-isopropylacrylamide; D006046:Gold