Nanostructured polysilane–titania hybrids and their application to porous titania thin films

Matsuura, Yukihito; Miura, S.; Naito, Hiroyoshi; Inoue, Hiroshi; Matsukawa, Kimihiro

doi:10.1016/s0022-328x(03)00644-2

Cited by 32 publications

(15 citation statements)

References 14 publications

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“…7 The most simple and convenient idea for construction of transparent and homogeneous hybrid materials is to increase the affinity between organic polymer and inorganic phases. Organic-inorganic hybrid materials are generally prepared by incorporating covalent bonds [8][9][10][11][12][13] or by physical interactions [14][15][16][17][18][19][20][21] to improve the compatibility between organic and inorganic phases.…”

Section: Introductionmentioning

confidence: 99%

Poly(methyl methacrylate) (PMMA)-based hybrid materials with reactive zirconium oxide nanocrystals

Ôtsuka

Chujo

2010

Polym J

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Highly transparent and homogeneous hybrids containing a single nano-sized inorganic oxide domain were synthesized from poly(methyl methacrylate) (PMMA) and aqueous dispersed zirconium oxide nanocrystals (ZrO 2 -NCs) in the presence of a coupling agent, 3-(methacryloxy)propyl-trimethoxysilane (MPTS), which was grafted onto the surface of ZrO 2 -NCs by zirconium hydroxide (Zr-OH) surface groups. The surface-functionalized ZrO 2 -NCs were used as macromonomers in the process of grafting from polymerization of methyl methacrylate (MMA). The densities of surface Zr-OH groups and MPTS surface modifications were determined using thermogravimetric analysis. Fourier transform infrared analysis indicated successful bonding between organic and inorganic moieties. The morphology of the obtained hybrid films was investigated by scanning electron microscopy and tapping-mode atomic force microscopy. Hybrid films possess interesting thermal stability and optical transparency characteristics because of the uniform incorporation of networks between organic polymer chains and inorganic nanocrystals.

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Section: Introductionmentioning

confidence: 99%

Poly(methyl methacrylate) (PMMA)-based hybrid materials with reactive zirconium oxide nanocrystals

Ôtsuka

Chujo

2010

Polym J

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“…The peak located at near 3300 cm À1 was ascribed to NÀ ÀH bond, and the peak within the range of 1220-1500 cm À1 could be assigned to the CÀ ÀN bond in the samples. 19,22,23 After comparing Figure 1(b) with Figure 1(a), it can be found that the new peaks at 1550 and 1650 cm À1 were from the asymmetric stretching vibration of COO À , 19,24 and the peak situated at 1735 cm À1 should be attributed to the C¼ ¼O vibration, these changes in absorption peaks clearly confirmed the reactions described in Scheme 1(a), i.e., the occurrence of lactone-ring opening of BL and the formation of the zwitterionic polymer. In Figures 1(c) and 1(d), the FTIR spectra were similar in appearance except a little decrease in the intensity of concerned peaks to those observed in Figures 1(a) and 1(b), which confirmed the reactions illustrated in Scheme 1(b).…”

Section: Ftir Spectramentioning

confidence: 99%

Effect of molecular structure of hybrid precursors on the performances of novel hybrid zwitterionic membranes

Liu

Fan

et al. 2007

J of Applied Polymer Sci

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Three types of novel hybrid zwitterionic membranes were prepared via a coupling reaction between two silane-coupling agents in a nonaqueous system and a subsequent reaction with 1,4-butyrolactone to create ion pairs in the hybrid precursors. FTIR spectra corroborated the corresponding reactions. The synthesized membranes were characterized by thermal analyses, ion-exchange capacities, streaming potentials, and pure water flux. Thermal analyses exhibited that the degradation temperature of the hybrid precursors decreased with an increase in zwitterionic extent because of the introduction of ion pairs. Ion-exchange capacity measurements revealed that the anion-exchange capacities and cation-exchange capacities were in the range of 0.023-0.05 and 0.32-0.58 mmol g À1 , respectively. Streaming potentials displayed that when the membranes coated for one or three times, the isoelectric points were in the pH range of 6.6-7.58 and 6.58-7.7, respectively. The pure water flux showed that it could be affected by the coating times and the ingredients of these zwitterionic membranes. This difference in membrane's characteristics can be ascribed to the effect of molecular structure of the hybrid precursors. Both the Coulombic interactions of ion pairs between the polymer chains and the hydrophilicity of these membranes were proposed to clarify the above phenomena.

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“…These compounds are useful as the coupling and cross-linking agents and the auxiliaries for plastics. The chemical structure of organofunctional silanes can be represented by the general formula [1]: (CH 3 Structure of organofunctional silanes results in their high reactivity both with organic and inorganic compounds. It gives ability to use these compounds as the improver agents in the plastic industry.…”

Section: Introductionmentioning

confidence: 99%

“…The alkoxysilyl derivatives are used as the key compounds in modern hybrid materials for advanced electronics and photonics [3]. Organo-inorganic thin film layers were obtained in the hydrolysis and condensation reactions between titanium alkoxides and poly(methylphenylsilane)-co-3-methacryloxypropyltriethoxysilane (block copolymer).…”

Section: Introductionmentioning

confidence: 99%

Ammonolysis of (3-chloropropyl)trimethoxysilane

Bartkowiak¹,

Pełech²,

Milchert³

2006

Journal of Hazardous Materials

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Nanostructured polysilane–titania hybrids and their application to porous titania thin films

Cited by 32 publications

References 14 publications

Poly(methyl methacrylate) (PMMA)-based hybrid materials with reactive zirconium oxide nanocrystals

Poly(methyl methacrylate) (PMMA)-based hybrid materials with reactive zirconium oxide nanocrystals

Effect of molecular structure of hybrid precursors on the performances of novel hybrid zwitterionic membranes

Ammonolysis of (3-chloropropyl)trimethoxysilane

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