title: Synthesis of 1D Fe₃O₄/P(MBAAm-co-MAA) nanochains as stabilizers for Ag nanoparticles and templates for hollow mesoporous structure, and their applications in catalytic reaction and drug delivery.
abstract: One-dimensional (1D) magnetic Fe3O4/P(MBAAm-co-MAA) nanochains were prepared by distillation-precipitation polymerization of MBAAm and MAA in the presence of Fe3O4 nanoparticles as building blocks under a magnetic heating stirrer, which played two critical roles: serving as magnetic field to induce the self-assembly of Fe3O4 nanoparticles into 1D nanochains and providing thermal energy to induce the polymerization of MAA and MBAAm on the surface of the Fe3O4 nanoparticles. The thickness of the P(MBAAm-co-MAA) layer can be easily tuned by adjusting the successive polymerization steps. The polymer layer that contained carboxyl groups was used as stabilizers for loading Ag nanoparticles and the reaction locus for deposition of outer silica layer via a sol-gel method in presence of C18TMS as the pore directing agent for tri-layer nanochains. The corresponding hollow mesoporous silica nanochains with movable maghemite cores (γ-Fe2O3@mSiO2) were produced after removal of the polymer mid-layer and the alkyl groups of the pore directing agent via calcination of the tri-layer nanochains at high temperature. The Fe3O4/P(MBAAm-co-MAA)/Ag nanochains exhibited a highly catalytic efficiency and well reusable property toward the reduction of nitrophenol. Furthermore, the γ-Fe2O3@mSiO2 nanochains possessed hollow mesoporous structure and high specific surface area (197.2 m(2) g(-1)) were used as a drug carrier, which displayed a controlled release property.
authors.affiliation: Key Laboratory of Functional Polymer Materials, Ministry of Education, Institute of Polymer Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, PR China.
authors.forename: Wei
authors.initials: W
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Functional Polymer Materials, Ministry of Education, Institute of Polymer Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, PR China.
authors.forename: Xiaowei
authors.initials: X
authors.lastname: Si
authors.affiliation: Key Laboratory of Functional Polymer Materials, Ministry of Education, Institute of Polymer Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, PR China.
authors.forename: Bin
authors.initials: B
authors.lastname: Liu
authors.affiliation: Dynea Ltd. Co., Gaoyao City, Guangdong 526105, PR China.
authors.forename: Guomin
authors.initials: G
authors.lastname: Bian
authors.affiliation: Dynea Ltd. Co., Gaoyao City, Guangdong 526105, PR China.
authors.forename: Yonglin
authors.initials: Y
authors.lastname: Qi
authors.affiliation: Key Laboratory of Functional Polymer Materials, Ministry of Education, Institute of Polymer Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, PR China. Electronic address: xlyang88@nankai.edu.cn.
authors.forename: Xinlin
authors.initials: X
authors.lastname: Yang
authors.affiliation: Key Laboratory of Functional Polymer Materials, Ministry of Education, Institute of Polymer Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, PR China.
authors.forename: Chenxi
authors.initials: C
authors.lastname: Li
mesh_terms: D000327:Adsorption; D002384:Catalysis; D004337:Drug Carriers; D016503:Drug Delivery Systems; D005290:Ferric Compounds / Q000737:chemistry*; D052203:Ferrosoferric Oxide / Q000737:chemistry; D058185:Magnetite Nanoparticles / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission; D008863:Microspheres; D044367:Phase Transition; D019800:Phenol / Q000737:chemistry; D011108:Polymers / Q000737:chemistry; D011109:Polymethacrylic Acids / Q000737:chemistry*; D016062:Porosity; D012822:Silicon Dioxide; D012834:Silver / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013696:Temperature; D013997:Time Factors
chemical_list: D004337:Drug Carriers; D005290:Ferric Compounds; D058185:Magnetite Nanoparticles; D011108:Polymers; D011109:Polymethacrylic Acids; C000606220:poly(N,N'-methylenebisacrylamide-co-methacrylic acid); C000499:ferric oxide; D019800:Phenol; D012834:Silver; D012822:Silicon Dioxide; D052203:Ferrosoferric Oxide
keywords: Controlled drug release; Distillation precipitation polymerization; Hollow mesoporous silica; Magnetic; One dimensional nanochains