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183 Newest Publications in journal of materials chemistry

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Ultra low dielectric constant hybrid films via side chain grafting reaction of poly(ether ether ketone) and phosphotungstic acid

31-10-2012 | Zhi Geng; Jinyu Ba; Shuling Zhang; Jiashuang Luan; Xu Jiang; Pengfei Huo; Guibin Wang, Journal of Materials Chemistry, 2012

The novel ultra low dielectric constant poly(ether ether ketone) hybrid films in which nanoscale phosphotungstic acid (PWA) clusters were grafted onto the side chains of poly(ether ether ketone) containing (3-trifluoromethyl) phenyl groups and carboxyl groups (PEEK–CF3–COOH) in the presence the ...

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Midblock sulfonation of a model long-chain poly(p-tert-butylstyrene-b-styrene-b-p-tert-butylstyrene) triblock copolymer

31-10-2012 | Pruthesh H. Vargantwar; Molly C. Brannock; Steven D. Smith; Richard J. Spontak, Journal of Materials Chemistry, 2012

Homopolymers containing ionic moieties such as sulfonic acid groups are suitable as fuel-cell, water-purification and ion-exchange membranes or, alternatively, as electroactive or otherwise stimuli-responsive soft materials. Block ionomers constitute a class of ionomers in which (i) long ...

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A clustered sulfonated poly(ether sulfone) based on a new fluorene-based bisphenol monomer

25-10-2012 | Chenyi Wang; Dong Won Shin; So Young Lee; Na Rae Kang; Gilles P. Robertson; Young Moo Lee; Michael D. Guiver, Journal of Materials Chemistry, 2012

A new fluorene-based bisphenol monomer containing two pendant phenyl groups, 9,9-bis(3-phenyl-4-hydroxy)phenyl-fluorene, was readily synthesized in high yield by a one-step reaction from inexpensive starting materials. A series of poly(ether sulfone)s with clustered sulfonic acid groups was ...

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Short side chain perfluorosulfonic acid membranes and their composites with nanosized zirconium phosphate: hydration, mechanical properties and proton conductivity

24-10-2012 | Monica Pica; Anna Donnadio; Mario Casciola; Paula Cojocaru; Luca Merlo, Journal of Materials Chemistry, 2012

Aqueous dispersions of a short side chain perfluorosulfonic acid ionomer (equivalent weight 830 g eq.−1) and gels of nanosized zirconium phosphate (ZrP) in propanol are used for the preparation, by solution casting, of composite membranes with ZrP loading up to 13 wt%. These membranes, together ...

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Investigation of the stability of magnetite nanoparticles functionalized with catechol based ligands in biological media

24-10-2012 | Steven L. Saville; Roland C. Stone; Bin Qi; O. Thompson Mefford, Journal of Materials Chemistry, 2012

A novel tri-nitroDOPA terminated polymer based ligand has been developed for the stabilization of magnetite nanoparticles. The synthesis involves a process in which ethylene oxide is polymerized using a trivinyl initiator, modified with carboxylic acid using a free radical addition of ...

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Co-Delivery of All-Trans-Retinoic-Acid and Cisplatin(IV) Prodrug Based on Polymer-Drug Conjugates for Enhanced Efficacy and Safety

10-10-2012 | Xiabin Jing; Rui Wang; Haihua Xiao; Haiqin Song; Yu Zhang; Xiuli Hu; Zhigang Xie; Yubin Huang; Yuxin Li, Journal of Materials Chemistry, 2012

Toxic cisplatin and non-toxic all-trans-retinoic acid were combined in polymer platform to enhance drug efficacy and safety.

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Acid–base bi-functionalized, large-pored mesoporous silica nanoparticles for cooperative catalysis of one-pot cellulose-to-HMF conversion

09-10-2012 | Wun-Huei Peng; Yin-Ying Lee; Connie Wu; Kevin C.-W. Wu, Journal of Materials Chemistry, 2012

Mesoporous silica nanoparticles (MSNs) with large pore size around 30 nm were synthesized and functionalized with acid (SO3H), base (NH2) and both acid–base (SO3H and NH2) functional groups (namely, LPMSN-SO3H, LPMSN-NH2 and LPMSN-both, respectively). These functionalized LPMSN nanomaterials were ...

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Boronate self-assembles with embedded Au nanoparticles; preparation, characterization and their catalytic activities for the reduction of nitroaromatic compounds

04-10-2012 | Yusuke Matsushima; Ryuhei Nishiyabu; Naoto Takanashi; Masatake Haruta; Hideaki Kimura; Yuji Kubo, Journal of Materials Chemistry, 2012

Sequential boronate esterification of benzene-1,4-diboronic acid with pentaerythritol induced hierarchical molecular self-assembly to produce mono-dispersed flower-like microparticles. ATR-FT-IR, PXRD, 13C-CP-MAS and 11B-DD-MAS NMR spectra indicate that the particles consist of zigzag-shaped ...

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Monodispersed ultrathin GdF3 nanowires: oriented attachment, luminescence, and relaxivity for MRI contrast agents

03-10-2012 | Yang Tian; Hong-Yu Yang; Kai Li; Xue Jin, Journal of Materials Chemistry, 2012

A facile solvothermal approach was used to synthesize monodispersed ultrathin GdF3 nanowires via an oriented attachment mechanism. Gadolinium nitrate acted as the Gd source, n-octylamine and oleic acid as capping ligands, and n-octanol as solvent. The phase and morphology of the nanowires were ...

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Electrospun laponite-doped poly(lactic-co-glycolic acid) nanofibers for osteogenic differentiation of human mesenchymal stem cells

26-09-2012 | Shige Wang; Rita Castro; Xiao An; Chenlei Song; Yu Luo; Mingwu Shen; Helena Tomás; Meifang Zhu; Xiangyang Shi, Journal of Materials Chemistry, 2012

We report the fabrication of uniform electrospun poly(lactic-co-glycolic acid) (PLGA) nanofibers incorporated with laponite (LAP) nanodisks, a synthetic clay material for osteogenic differentiation of human mesenchymal stem cells (hMSCs). In this study, a mixture solution of LAP suspension and ...

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